Measuring Signal Energy Patents (Class 343/703)
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Patent number: 11909427Abstract: A circuit device includes a directional coupler with a first port receiving a radiofrequency signal, a second port outputting a signal in response to signal received by the first port, and a third port outputting a signal in response to a reflection of the signal at the second port. An impedance matching network is connected between the second port and an antenna. The impedance matching network includes fixed inductive and capacitive components and a single variable inductive or capacitive component. A diode coupled to the third port of the coupler generates a voltage at a measurement terminal which is processed in order to select and set the inductance or capacitance value of the variable inductive or capacitive component.Type: GrantFiled: February 24, 2023Date of Patent: February 20, 2024Assignee: STMicroelectronics (Tours) SASInventors: Jean Pierre Proot, Pascal Paillet, Francois Dupont
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Patent number: 11882527Abstract: A method and a closed-loop antenna impedance tuning (CL-AIT) system are provided. An input reflection coefficient is determined. The input reflection coefficient and a threshold value are compared to determine whether the input reflection coefficient is greater than the threshold value. In response to determining that the input reflection coefficient is greater than the threshold value, an optimal tuner code is determined based on a tuner code search algorithm. The optimal tuner code is applied to configure the CL-AIT system.Type: GrantFiled: September 6, 2022Date of Patent: January 23, 2024Inventors: Donghoon Lee, Pranav Dayal, Kee-Bong Song
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Patent number: 11867739Abstract: A system for the automated validation of a semi-anechoic chamber (SAC) is disclosed. The system includes a receive assembly and a transmit assembly, each configured to autonomously relocate within the SAC. The system also includes a local client communicatively coupled to the transmit assembly. The local client is configured to send a validation arrangement to the transmit assembly describing a validation location and a distance. The transmit assembly is configured to receive the validation arrangement, move the transmit assembly to the validation location and send an instruction to the receive assembly, the instruction describing the distance. The receive assembly is communicatively coupled to the transmit assembly and configured to receive the instruction and move the receive assembly such that a separation between the transmit and receive assemblies is restored to the distance. Each validation arrangement corresponds to a validation point. A plurality of validation points defines a test volume.Type: GrantFiled: January 31, 2023Date of Patent: January 9, 2024Inventor: Phillip C. Miller
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Patent number: 11867738Abstract: An apparatus for a mmWave RF scanner system is described that enables multiple modes of operation. The disclosed RF scanner may be configured to perform a variety of independent tasks, including antenna measurement in far-field or near-field mode, active array characterization, radome measurements, and material characterization. To achieve all proposed measurements, a nine-axis RF scanner system is disclosed. For all modes, the system may use a two-port vector network analyzer (100 kHz to 9 GHz) connected to a plurality of frequency extenders that increases the operating range from 75 GHz to 110 GHz. The system may also include a graphical user interface for autonomous operation in each mode.Type: GrantFiled: June 30, 2021Date of Patent: January 9, 2024Assignee: The Board of Regents of the University of OklahomaInventor: Jorge Luis Salazar-Cerreno
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Patent number: 11863240Abstract: The electronic device of the present invention may comprise: a first antenna and a second antenna; a communication circuit; and a processor electrically connected to the first antenna, the second antenna, and the communication circuit. The processor is configured to: control the communication circuit such that a first signal is output to the first antenna; acquire a second signal corresponding to the first signal reflected from the first antenna, and a third signal corresponding to the first signal output through the first antenna and received by the second antenna; identify a reflection coefficient at which the first signal is reflected from the first antenna, and a transmission coefficient at which the first signal is transmitted to the second antenna; and perform a designated function according to a value corresponding to a distance between the electronic device and an external object.Type: GrantFiled: March 5, 2019Date of Patent: January 2, 2024Assignee: Samsung Electronics Co., Ltd.Inventors: Dongil Yang, Seonjun Kim, Seunghyun Oh, Hanyeop Lee, Wonsub Lim, Hyoseok Na
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Patent number: 11855707Abstract: System and method for measuring path loss of a conductive radio frequency (RF) signal path used in testing a RF data signal transceiver device under test (DUT) with a RF vector signal transceiver. A path loss measurement may be performed by initially leaving an open connection at the RF signal path end normally connected to the DUT during DUT testing. Sourcing the RF test signal with the RF vector signal transceiver at multiple test frequencies avoids need for additional testing with shorted and loaded connections at the RF signal path end.Type: GrantFiled: June 21, 2021Date of Patent: December 26, 2023Assignee: LITEPOINT CORPORATIONInventors: Chen Cao, Christian Volf Olgaard, Ray Wang
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Patent number: 11832961Abstract: Various systems, devices, and methods for contactless sleep tracking are presented. Based on data received from a contactless sensor, such as a radar sensor, determine that a user has entered a sleep state. A transition time may be determined at which the user transitions from the sleep state to an awake state. An environmental event, based on data received from an environmental sensor, may be identified as occurring within a time period of the transition time. The user waking may be attributed to the environmental event based on the environmental event occurring within the time period of the transition time. An indication of the attributed environmental event as a cause of the user waking may be output.Type: GrantFiled: August 11, 2020Date of Patent: December 5, 2023Assignee: Google LLCInventors: Dongeek Shin, Michael Dixon, Andrew William Goldenson
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Patent number: 11831087Abstract: A quasi-isotropic antenna includes: a feeder; a loop antenna configured to radiate a first radio wave based on a feeding from the feeder; and a dipole antenna adjacent to the loop antenna, and configured to radiate a second radio wave by resonating based on a resonant-coupling with the loop antenna, wherein a radiation pattern of the first radio wave is orthogonal to a radiation pattern of the second radio wave.Type: GrantFiled: September 16, 2021Date of Patent: November 28, 2023Assignee: Samsung Electronics Co., Ltd.Inventors: Jaechun Lee, Jongpal Kim, Joonseong Kang, Junyeub Suh, Wonseok Lee
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Patent number: 11815539Abstract: The invention discloses a hybrid compact, near-field-to-far-field and direct-far-field test system in an anechoic chamber. It comprises a curved reflector with its primary feed antenna set situated on a lateral side and pointing towards it, a secondary feed antenna set pierced to the reflector or in front of it, and one or several sets of antennas or devices under test (AUT/DUT), and their 3D turntable tower placed at a quiet zone, for which roll, elevation and azimuth can change. In a receive process, the primary antenna set transmits several signals towards the reflector, which reflects these signals towards the quiet zone in the form of planar wavefronts. The secondary antenna set also transmits several signals, but directly towards the quiet zone in spherical wavefronts. The AUT/DUT receives all these signals simultaneously. Through reciprocity, a similar measurement process for transmission can be performed.Type: GrantFiled: October 9, 2018Date of Patent: November 14, 2023Assignee: EMITE INGENIERIA S.L.Inventor: David Agapito Sanchez Hernandez
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Patent number: 11804914Abstract: Techniques are described for detecting whether a phased array antenna is to be calibrated. In an example, a controller communicatively coupled with the phased array antenna measures a characteristic of a probe signal. The probe signal is communicated between an antenna element of the phased array antenna and a probe antenna mounted to the phased array antenna. The probe antenna is over-resonant. The controller further determines a drift of the phased array antenna based at least in part on the characteristic. Based at least in part on the drift, the controller initiates a calibration of the phased array antenna.Type: GrantFiled: May 7, 2020Date of Patent: October 31, 2023Assignee: Amazon Technologies, Inc.Inventors: Tara Yousefi, Alireza Mahanfar, Christopher Steven Merola
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Patent number: 11802898Abstract: Embodiments provide a method, apparatus and device of reconstructing non-Kronecker structured channels, applicable to communications. A weight matrix is determined for emulating link characteristics of a reconstructed channel, and includes a weight corresponding to each ray mapped to a probe antenna. In each cluster, rays mapped to each probe antenna have different weights with each other. For each cluster, a time-varying fading channel impulse response of each ray of the cluster mapped to a probe antenna is calculated using the weight matrix. The time-varying fading channel impulse response includes a transition equation for each probe antenna describing mapping of rays of the cluster to the probe antenna. A transition matrix from each probe antenna to receiving antennas of a device under test is determined. A product of the time-varying fading channel impulse response of the cluster multiplied by the transition matrix serves as a channel impulse response of the cluster.Type: GrantFiled: March 29, 2021Date of Patent: October 31, 2023Assignee: Beijing University of Posts and TelecommunicationsInventors: Yong Li, Wenbo Wang, Mugen Peng
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Patent number: 11757494Abstract: Various example embodiments described herein relate to a method for selecting antennas in an RFID reader. In some examples, the method includes determining that at least one external antenna and internal antenna are connected to the RFID reader; selecting the at least one external antenna and internal antenna; and performing a read operation based on the selected at least one external antenna and internal antenna.Type: GrantFiled: October 26, 2021Date of Patent: September 12, 2023Assignee: HAND HELD PRODUCTS, INC.Inventors: Charles Joseph Cunningham, IV, Gopalakrishnan Rangarajulu, Shashidar Ramamurthy, Abhay Ravi Chandran
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Patent number: 11742960Abstract: Devices for testing a DUT having a circuit coupled to an antenna are disclose. The device can include a DUT location, a probe, and a ground area configured to serve as an antenna ground area for the antenna of the DUT. The ground area includes a slot that the antenna feed impedance is not affected or not affected significantly. The probe is adapted to weakly couple to the antenna of the DUT via the opening to probe a signal when the antenna of the DUT is fed by the circuit of the DUT and/or in order to couple a signal to the antenna which is fed to the circuit of the DUT by the antenna.Type: GrantFiled: February 25, 2022Date of Patent: August 29, 2023Assignee: Advantest CorporationInventors: Jan Hesselbarth, José Moreira
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Patent number: 11742595Abstract: The present invention performs characteristic tests on a communication device with a compact and simple configuration. A testing device 1 that performs characteristic tests in a near field on a communication antenna 250 of a communication device 240 includes a tray body 220 that supports the communication device in a test space S as an anechoic chamber, and a coupler support frame 520 that supports coupler antennas transmitting and receiving radio waves to/from the communication antenna 250. The coupler support frame can form inner-periphery coupler antenna arrays 300A and 300B each including a plurality of coupler antennas 300 arranged at least in a row along a curve extending along an inner peripheral surface composed of side surface S1 and S2, an upper surface S3, and a lower surface S4, and a rear coupler antenna array 300C including a plurality of coupler antennas 300 arranged at least in a row in an upper-lower direction along a curve extending along a rear surface S5.Type: GrantFiled: October 11, 2019Date of Patent: August 29, 2023Assignee: MORITA TECH CO., LTD.Inventors: Osamu Morita, Akinori Saeki, Kei Okamoto, Satoshi Ogura
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Patent number: 11733283Abstract: An apparatus for detecting a condition or authenticity of one or more electronic devices includes an enclosure having an antenna integrated therewithin, a fixture mounted within a hollow interior of the enclosure, the fixture being configured to receive the one or more electronic devices and connect one or more signals to each of the one or more electronic devices and a sensor and controller assembly connected to the antenna and configured to process a signature of an emission of a radiofrequency (RF) energy from of one or more electronic devices having the one or more signals connected thereto.Type: GrantFiled: April 26, 2021Date of Patent: August 22, 2023Assignee: Nokomis, Inc.Inventors: Walter John Keller, III, Andrew Richard Portune, Todd Eric Chornenky, William Anthony Davis
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Patent number: 11716056Abstract: A system includes a first differential amplifier and a first transformer with a primary coil coupled to an output of the first differential amplifier and with a secondary coil coupled to a load. The system also includes a second differential amplifier and a second transformer with a primary coil coupled to an output of the second differential amplifier and with a secondary coil coupled in series with the secondary coil of the first transformer. The system also includes a tuning network coupled to a center tap node between the secondary coil of the first transformer and the secondary coil of the second transformer.Type: GrantFiled: December 2, 2020Date of Patent: August 1, 2023Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Tolga Dinc, Sachin Kalia, Swaminathan Sankaran, Baher Haroun
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Patent number: 11686792Abstract: An exemplary coil arrangement can be provided, which can include, for example, coil element(s) having a parallel resonant circuit at a port, where the coil element(s) is detuned by causing a low impedance at the port. Pre-amplifier arrangements can provide a low impedance at the port of the coil element(s) to suppress the induced current on the coil element(s) thereby reducing the inductive coupling to neighboring element(s). The coil element(s) can include an inductance and a capacitance which cancel each other out. The inductance and the capacitance can cancel each other out such that an impedance of the coil element has no imaginary part at a working frequency. An impedance of the coil element(s) in free space includes a real part that can be greater than a sum of losses for the coil element(s).Type: GrantFiled: April 30, 2018Date of Patent: June 27, 2023Assignee: NEW YORK UNIVERSITYInventors: Daniel K. Sodickson, Martijn Cloos, Bei Zhang
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Patent number: 11644496Abstract: An antenna measurement system is configured to measure a radiation field pattern of an AUT fixed on a reference surface. The antenna measurement system includes an articulated robot, a measurement component, and a processor. The articulated robot is seated on a periphery of the reference surface, with a movable end capable of scanning a short-distance area defined by the reference surface. The measurement component is arranged on the movable end of the articulated robot, and a front surface of the measurement component is a specific geometric surface, which is used to face the antenna for radiation measurement. The processor is coupled to the movable end to control the movable end to drive the measurement component to move relative to the antenna along a predefined scanning path, and keep the specific geometric surface facing the antenna during the movement along the scanning path.Type: GrantFiled: May 4, 2021Date of Patent: May 9, 2023Assignee: National Taiwan UniversityInventors: Hsi Tseng Chou, Chih Wei Chiu
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Patent number: 11618590Abstract: A support frame is provided that includes an upper plate, a lower plate, side support members, an upper support structure, and a lower support structure. The upper plate defines a first inner surface and an opposed first outer surface. The lower plate defines a second inner surface and an opposed second outer surface. A TEM test space is defined between the first inner surface and the second inner surface. The side support members are disposed between the upper plate and the lower plate proximate a periphery of the test space. The upper support structure is coupled to and supports the upper plate. The upper support structure extends from the first outer surface of the upper plate. The lower support structure is coupled to and supports the lower plate. The lower support structure extends from the second outer surface of the lower plate.Type: GrantFiled: March 1, 2019Date of Patent: April 4, 2023Inventors: Lydell L. Frasch, Benjamin R. Blakely, Brian M. Finn, Eugene Sorensen, Kyle Weber
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Patent number: 11609255Abstract: A shielding box for testing a transmission antenna and a reception antenna includes a first box, a second box, a third box, and an absorption material. The transmission antenna is positioned in the first box. The reception antenna is positioned in the third box. The absorption material is distributed over the inner surfaces of the first box, the second box, and the third box, respectively. The third box is connected through the second box to the first box. The second box provides a relatively narrow connection path for reducing the multipath interference between the transmission antenna and the reception antenna.Type: GrantFiled: March 30, 2022Date of Patent: March 21, 2023Assignee: QUANTA COMPUTER INC.Inventors: Shuenn-Shyan Chen, Te-Wei Liu
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Patent number: 11585893Abstract: A multi-target dynamic simulation test system for vehicle-mounted millimeter-wave (MMW) radar. The test system includes an antenna turntable, a radar pan-and-tilt head (PTH), a radar echo simulation module, a control module, a signal acquisition module and a display. A test radar is driven by the radar PTH to pan or tilt. The radar PTH and the test radar are both placed in a darkroom module. An antenna is driven by the antenna turntable to pan. The control module sends expected states of the test radar and the antennas to the radar PTH and the antenna turntable, respectively, and sends relative states between host vehicle and virtual targets to the test radar after processing by the radar echo simulation module. The signal acquisition module acquires and stores a detection signal of the test radar, and transmits the detection signal of the test radar to the display for real-time display.Type: GrantFiled: May 18, 2020Date of Patent: February 21, 2023Assignee: JILIN UNIVERSITYInventors: Kunyang Cai, Ting Qu, Bingzhao Gao, Wenqi Qu, Sihan Liu
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Patent number: 11567115Abstract: A system for the automated validation of a semi-anechoic chamber (SAC) is disclosed. The system includes a receive assembly and a transmit assembly, each configured to autonomously relocate within the SAC. The system also includes a local client communicatively coupled to the transmit assembly. The local client is configured to send a validation arrangement to the transmit assembly describing a validation location and a distance. The transmit assembly is configured to receive the validation arrangement, move the transmit assembly to the validation location and send an instruction to the receive assembly, the instruction describing the distance. The receive assembly is communicatively coupled to the transmit assembly and configured to receive the instruction and move the receive assembly such that a separation between the transmit and receive assemblies is restored to the distance. Each validation arrangement corresponds to a validation point. A plurality of validation points defines a test volume.Type: GrantFiled: August 1, 2022Date of Patent: January 31, 2023Inventor: Phillip C. Miller
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Patent number: 11557822Abstract: The present disclosure relates to an adaptive antenna radome heating system (200, 300, 400) for a point to point radio link, where the adaptive antenna radome heating system comprises a processing unit (150, 220, 420) and at least one point to point radio link transceiver (TRX) (111, 121; 210A, 210B, 210C). Each TRX comprises an antenna radome (110, 120) having an antenna radome heating device (140, 141) configured to be activated by a control signal (R1, R2, RN). The processing unit (150, 220, 420) is arranged to determine an onset of accumulated precipitation on the antenna radome of the at least one TRX (111, 121; 210A, 210B, 210C) and to activate the corresponding antenna radome heating device (140, 141) by the control signal (R1, R2, RN) in response to determining the onset of accumulated precipitation.Type: GrantFiled: August 31, 2018Date of Patent: January 17, 2023Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Martin Sjödin, Lei Bao, Jonas Hansryd
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Patent number: 11558127Abstract: A method for calibrating a transmitter-to-receiver (T2R) relative phase in millimeter wave (mmWave) beamforming system includes: transmitting a first calibrated signal to a second antenna of the mmWave beamforming system through a first antenna of the mmWave beamforming system according to a first transmitter (TX) input signal; receiving the first calibrated signal through the second antenna, and obtaining a first loopback receiver (RX) signal according to the first calibrated signal received by the second antenna; transmitting a second calibrated signal to the first antenna through the second antenna according to a second TX input signal; receiving the second calibrated signal through the first antenna, and obtaining a second loopback RX signal according to the second calibrated signal received by the first antenna; and calibrating the T2R relative phase according to a phase difference between the first and second loopback RX signals.Type: GrantFiled: October 13, 2021Date of Patent: January 17, 2023Assignee: MEDIATEK INC.Inventors: Kuo-Hao Chen, Hsiao-Tung Lin, Chun-Ying Ma
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Patent number: 11552407Abstract: A radio frequency (RF) test hat. The RF test hat may comprise: a body having a substantially rectangular portion with open forward and aft ends, an end cap, arm and strap assembly, absorber material, a receiving antenna, lens, and upper and lower mesh screens. The end cap may couple to the open forward end of the body. The arm and strap assembly may hingedly couple to the open aft end of the body. The absorber material may be within the end cap. The receiving antenna may be disposed within the first absorber material and may measure the intensity of a beam of electromagnetic radiation. The lens may be located within the middle portion of the body and may spread the beam across a larger surface area of the absorber material. The upper and lower mesh screens may be disposed between the end cap and lens and may comprise openings that are substantially hexagonal in shape.Type: GrantFiled: June 2, 2022Date of Patent: January 10, 2023Assignee: The United States of America, as represented by the Secretary of the NavyInventors: Christian Hugo, Gary Salvail
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Patent number: 11549977Abstract: A radio frequency (RF) test hat. The RF test hat may comprise: a cylinder having forward and aft ends, end cap, arm and strap assembly, first and second absorber materials, a receiving antenna, and lens. The end cap may couple to the forward end of the cylinder. The arm and strap assembly may hingedly couple to the aft end of the cylinder and may be configured to mount the RF test hat onto a pod or transmitting antenna. The first absorber material may be located within the forward end of the cylinder. The second absorber material may be located near the aft end of the cylinder. The receiving antenna, which may be disposed within the first absorber material, may measure the intensity of a beam of electromagnetic radiation. The lens, which may be located within the middle portion of the cylinder, may spread the beam across a larger surface area of the first absorber material.Type: GrantFiled: May 23, 2022Date of Patent: January 10, 2023Assignee: The United States of America, as represented by the Secretary of the NavyInventors: Christian Hugo, Gary Salvail
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Patent number: 11545741Abstract: Multiple feed, front-shielded, coplanar waveguide, direct-fed, cavity-backed slot antennas are described. Various implementations form an antenna unit capable of millimeter waveform and/or microwave waveform transmissions. An antenna comprises a conductive plate that includes an aperture. The aperture has a shape that extends along an axis that bisects the aperture into first and second bisected portions, the first bisected portion having a first geometry type, and the second portion having a second geometry type that is a bilateral symmetry shape type of the first geometry type. In implementations, the aperture is configured to radiate waveforms within a frequency range from about between 600 Megahertz (MHz) to 72 Gigahertz (GHz) by applying multiple signal feeds to the conductive plate.Type: GrantFiled: June 1, 2021Date of Patent: January 3, 2023Assignee: Motorola Mobility LLCInventors: Junsheng Zhao, Eric Le Roy Krenz, Hugh Smith
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Patent number: 11536760Abstract: A testing device includes a testing socket and a reflector. The testing socket defines an accommodating space. The reflector is disposed in the accommodating space and has a plurality of reflection surfaces non-parallel with each other. The reflection surfaces define a transmission space.Type: GrantFiled: April 3, 2018Date of Patent: December 27, 2022Assignee: ASE TEST, INC.Inventors: Hung-Jen Huang, Yen-Chun Wang, Chen-Kuo Chu, I-Chun Liu
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Patent number: 11515636Abstract: Front-shielded, coplanar waveguide, direct-fed, cavity-backed slot antennas are described. Various implementations form an antenna unit capable of millimeter waveform and/or microwave waveform transmissions. A bottom shielding structure of the antenna unit defines a cavity, where various implementations include one or more dampening structures within the cavity. Some implementations includes a slot antenna within the cavity defined by the bottom shielding structure, such as a coplanar waveguide (CPW) direct-fed slot antenna, to form a cavity-backed slot antenna. Some implementations connect a top shielding structure to the bottom shielding structure to encase the slot antenna. In one or more implementations, the top shielding structure includes aperture windows to allow waveforms within a frequency range from about between 600 Megahertz (MHz) to 72 Gigahertz (GHz). and radiated by the slot antenna to radiate outward from the antenna unit.Type: GrantFiled: June 1, 2021Date of Patent: November 29, 2022Assignee: Motorola Mobility LLCInventors: Junsheng Zhao, Eric Le Roy Krenz, Hugh Smith
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Patent number: 11506697Abstract: A measurement device for measuring performance of at least one antenna system in a first frequency band and in a second frequency band. The measurement device including an outer chamber having inwardly radio frequency reflective walls configured to enclose the antenna system, an inner chamber deployable inside the outer chamber, the inner chamber having radio frequency absorptive walls configured to enclose the antenna system, a first test antenna arrangement arranged inside the outer chamber and configured for a measurement operation in the first frequency band, and a second test antenna arrangement arranged inside the inner chamber and configured for a measurement operation in the second frequency band, thereby enabling measuring performance of the antenna system in a reflective radio frequency environment by the first test antenna arrangement and measuring performance in an essentially anechoic radio frequency environment by the second test antenna arrangement.Type: GrantFiled: June 17, 2019Date of Patent: November 22, 2022Assignee: BLUETEST ABInventors: Robert Rehammar, John Kvarnstrand, Klas Arvidsson
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Patent number: 11496228Abstract: A beamformer for providing signals from a device under test (DUT) and an emulator is disclosed. The beamformer includes: a radio frequency (RF) interface configured to receive a plurality of radio beams and convert a data stream comprising a plurality of radio beams from analog signals to digital signals; a radio samples processor configured to receive the digital signals, decouple data samples from the plurality of radio beams, and recombine the data samples to provide a single data stream to a corresponding single device used by an end-user; and a local processor adapted to dynamically adjust operational parameters in the radio samples processor of the single data stream.Type: GrantFiled: March 1, 2021Date of Patent: November 8, 2022Assignee: Keysight Technologies, Inc.Inventors: Enrico Bendinelli, Luigi Travaglini, Steffen Beyme
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Patent number: 11456531Abstract: A method includes defining a Center-of-Radiation Reference for a device under test, the CORR indicating a reference origin of an electromagnetic wave pattern formable with the DUT; determining a 3-dimensional orientation information with respect to the CORR, the 3-dimensional orientation information indicating a direction of the electromagnetic wave pattern; and providing the CORR and the 3-dimensional orientation information to a measurement system.Type: GrantFiled: December 12, 2019Date of Patent: September 27, 2022Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Paul Simon Holt Leather, Ramez Askar, Kei Sakaguchi, Thomas Haustein, Leszek Raschkowski
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Method and apparatus of modulating a neuronal firing frequency at a brain functional site in a brain
Patent number: 11445959Abstract: The present application provides a method and an apparatus of modulating a neuronal firing frequency at a brain functional site in a brain, the method comprising: generating an electromagnetic field with its power in variation at the preset modulating frequency; and arranging the generated electromagnetic field near the brain such that the brain functional site is within the range of the near field of the electromagnetic field, to polarize extracellular fluid at the brain functional site with the power of the electromagnetic field, such that a polarization density of the extracellular fluid varies at the preset modulating frequency and neurons in the extracellular fluid are modulated to fire at the preset modulating frequency.Type: GrantFiled: August 27, 2018Date of Patent: September 20, 2022Inventors: Xiaoping Li, Qian Xia, Jessica Li, Joanna Le Xi Li -
Patent number: 11444385Abstract: An antenna structure and a mobile device including the same are provided. The mobile includes a metal back cover and an antenna structure. The metal back cover has an open slot. The antenna structure includes a feeding metal radiator, a first grounded metal radiator, a second grounded metal radiator, and a substrate. The feeding metal radiator includes a first radiating portion, a first connecting portion, a second radiating portion and a feeding portion. The first radiating portion extends along a second direction from one side of the opening slot. The second radiating portion is coupled with the first radiating portion through the first connecting portion. The feeding portion is connected to the second radiating portion and extends along the second direction from one side of the open slot.Type: GrantFiled: April 21, 2021Date of Patent: September 13, 2022Assignee: WISTRON NEWEB CORPORATIONInventors: Chih-Feng Tai, Kuan-Hsun Lai, Kuei-Cheng Wang
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Patent number: 11437729Abstract: The present application provides a terahertz leaky-wave antenna measuring system in which an original feed enclosed by a structure is replaced with a probe. The probe is moved along grooves in different directions to acquire amplitude and phase information in real-time to achieve an antenna equivalent measurement according to the reciprocity theorem, wherein the feed and the structure are separated from each other.Type: GrantFiled: February 10, 2021Date of Patent: September 6, 2022Assignee: TSINGHUA UNIVERSITYInventors: Xiao-Ping Zheng, De-Jian Zhang
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Patent number: 11422097Abstract: An RF test hat. The RF test hat may comprise: a body having a substantially rectangular portion with open forward and aft ends, an end cap, arm and strap assembly, absorber material, a receiving antenna, lens, and upper and lower mesh screens. The end cap may couple to the open forward end of the body. The arm and strap assembly may hingedly couple to the open aft end of the body. The absorber material may be within the end cap. The receiving antenna may be disposed within the first absorber material and may measure the intensity of a beam of electromagnetic radiation. The lens may be located within the middle portion of the body and may spread the beam across a larger surface area of the absorber material. The upper and lower mesh screens may be disposed between the end cap and lens and may comprise openings that are substantially hexagonal in shape.Type: GrantFiled: November 5, 2020Date of Patent: August 23, 2022Assignee: The United States of America, as represented by the Secretary of the NavyInventors: Christian Hugo, Gary Salvail
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Patent number: 11415616Abstract: A radio frequency (RF) test hat. The RF test hat may comprise: a cylinder having forward and aft ends, end cap, arm and strap assembly, first and second absorber materials, a receiving antenna, and lens. The end cap may couple to the forward end of the cylinder. The arm and strap assembly may hingedly couple to the aft end of the cylinder and may be configured to mount the RF test hat onto a pod or transmitting antenna. The first absorber material may be located within the forward end of the cylinder. The second absorber material may be located near the aft end of the cylinder. The receiving antenna, which may be disposed within the first absorber material, may measure the intensity of a beam of electromagnetic radiation. The lens, which may be located within the middle portion of the cylinder, may spread the beam across a larger surface area of the first absorber material.Type: GrantFiled: March 5, 2020Date of Patent: August 16, 2022Assignee: The United States of America, as represented by the Secretary of the NavyInventors: Christian Hugo, Gary Salvail
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Patent number: 11391765Abstract: A test socket assembly including a contactor body having a socket opening sized and configured to receive a device under test therein, and one or more waveguides at least partially disposed within the contactor body or external to the contactor body. The assembly further including at least one waveguide antenna probe coupled with the one or more waveguides, where the at least one waveguide antenna probe including a first set of sides and a second set of sides, at least one of the first set of sides are flared out away from the longitudinal axis.Type: GrantFiled: January 31, 2020Date of Patent: July 19, 2022Assignee: XCERRA CORPORATIONInventors: Dongmei Han, Benoit Gubert, Yukang Feng
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Patent number: 11394126Abstract: A distributed transmitter antenna includes a plurality of antenna segments and a plurality of transmitters. A first transmitter of the plurality of transmitters is coupled to a first antenna segment of the plurality of antenna segments, and a second transmitter of the plurality of transmitters is coupled to the first antenna segment and a second antenna segment of the plurality of antenna segments.Type: GrantFiled: July 24, 2020Date of Patent: July 19, 2022Assignee: HRL LABORATORIES, LLCInventors: Carson R. White, Hyok J. Song, Christopher P. Henry
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Patent number: 11393507Abstract: A method for generating an event log in view of at least one test routine for a device under test, a logging system for logging at least one event frame for a device under test, a method for training a machine learning circuit to extract event frames from multimedia data, and a method for extracting event frames from multimedia data using a machine learning circuit trained are described.Type: GrantFiled: August 5, 2021Date of Patent: July 19, 2022Assignee: Rohde & Schwarz GmbH & Co. KGInventors: Andreas Dippon, Bernhard Sterzbach, Byron-Lim Timothy Steffan
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Patent number: 11387921Abstract: A measuring device 1 includes an integrated control device 10 that performs control to measure a specific measurement item by performing a measurement operation, a predetermined number of times, of transmitting a test signal and receiving a signal under measurement transmitted from a DUT 100 at a measurement position where the DUT 100, which is rotated by a DUT scanning mechanism 56 in an OTA chamber 50, faces a desired orientation; a disconnection detection unit 18a that detects disconnection of call connection at the measurement position; a reconnection control unit 18b that performs reconnection of the call connection in a case where the disconnection of the call connection is detected; and a measurement return control unit 18c that returns to measurement at a subsequent measurement position from a measurement position where the disconnection of the call connection is detected after reconnection.Type: GrantFiled: June 8, 2021Date of Patent: July 12, 2022Assignee: ANRITSU CORPORATIONInventors: Hideyuki Endo, Hironori Watanabe, Takumi Nakamura, Yui Yoshida
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Patent number: 11366151Abstract: Method and device for evaluating the electrical performance of an antenna cover. The method for evaluating the electrical performance of the antenna cover comprises: acquiring electromagnetic parameter information of an antenna and parameter information of an antenna cover; calculating far-field information of the antenna and far-field information of an antenna system on the basis of the electromagnetic parameter information of the antenna and of the parameter information of the antenna cover; and calculating electrical performance parameter information of the antenna cover on the basis of the far-field information of the antenna and of the far-field information of the antenna system.Type: GrantFiled: December 21, 2017Date of Patent: June 21, 2022Assignee: Kuang-Chi Institute of Advanced TechnologyInventors: Ruopeng Liu, Hua Tian, Yang He, Xiaoyu Zhang, Qingwen Feng
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Patent number: 11360134Abstract: System and method for determining gain characteristics of a circularly-polarized antenna. The method includes receiving a measured first amplitude of a forward gain between a circularly-polarized antenna probe of a first type and a linearly-polarized standard-gain antenna, a measured second amplitude of a forward gain between a circularly-polarized antenna probe of a first type and a circularly-polarized antenna under test, and a measured third amplitude of a forward gain between a circularly-polarized antenna probe of a second type and the circularly-polarized antenna under test. The method also includes determining a left-hand circularly-polarized gain and a right-hand circularly-polarized gain of the circularly-polarized antenna under test based on the measured first amplitude, the measured second amplitude, the measured third amplitude, and a cross-polarization level of the circularly-polarized antenna probes of the first and second types. The determination may be performed using one or more processors.Type: GrantFiled: February 6, 2020Date of Patent: June 14, 2022Assignee: City University of Hong KongInventors: Chen Ding, Kwai-Man Luk
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Patent number: 11342912Abstract: A processor-based device includes a chassis having a chassis ground node that is arranged to electrically couple the chassis to an earth ground. The device also includes a connector accessible from an exterior of the chassis. The connector conforms to a standardized powerline interface having a hot power signal, a load power signal, and a neutral power signal. A processor-based apparatus housed at least in part within the chassis is arranged to operate using DC power derived from AC power present at the powerline interface. A stray voltage detector is arranged to detect a stray voltage potential existing between the neutral power signal of the standardized powerline interface and the chassis ground node, and the processor-based device is arranged to communicate at least one indication of the detected stray voltage potential.Type: GrantFiled: March 30, 2020Date of Patent: May 24, 2022Assignee: Ubicquia, Inc.Inventors: Bradford Brian Hutson, Gustavo Dario Leizerovich
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Patent number: 11340278Abstract: The present disclosure relates to a measurement system for testing a device under test over-the-air, the measurement system comprising a signal generation and/or analysis equipment, several antennas, several reflectors and a test location for the device under test. The antennas are connected with the signal generation and/or analysis equipment in a signal-transmitting manner. Each of the antennas is configured to transmit and/or receive an electromagnetic signal so that a beam path is provided between the respective antenna and the test location. The electromagnetic signal is reflected by the respective reflector so that the electromagnetic signal corresponds to a planar wave. Each antenna aims at a focal point of the corresponding reflector. Each antenna and the corresponding reflector together are configured to provide a corresponding quiet zone at the test location.Type: GrantFiled: March 31, 2020Date of Patent: May 24, 2022Assignee: Rohde & Schwarz GmbH & Co. KGInventor: Corbett Rowell
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Patent number: 11329377Abstract: A coupling device includes a plurality of couplers. Each coupler includes a transmission main line and a coupling subline. The transmission main line is used for providing an input end and an output end. The coupling subline is coupled with the transmission main line to provide two coupling ends. The coupling subline includes two first parts located on opposite sides of the transmission main line and a second part connected between the two first parts. The coupling sublines of the plurality of couplers are connected in series to provide a first coupling output port and a second coupling output port. The first part of the coupling subline of at least one of the plurality of couplers has a shared section with the second part of the coupling subline of an adjacent one of the plurality of couplers.Type: GrantFiled: May 28, 2019Date of Patent: May 10, 2022Assignee: CommScope Technologies LLCInventors: Bo Wu, Ligang Wu, Runmiao Wu, Jian Zhang
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Patent number: 11280822Abstract: A measurement system for performing measurements of the total radiated power of a device under test has an anechoic chamber, a positioner with a device section for supporting the device under test, at least one link antenna for establishing communication with the device under test and a plurality of different measurement antennas. The measurement antennas are arranged in the anechoic chamber and are designed to carry out a total radiated power measurement. Further, a measurement setup as well as a method for performing measurements of the total radiated power of a DUT are shown.Type: GrantFiled: January 15, 2020Date of Patent: March 22, 2022Assignee: Rohde & Schwarz GmbH & Co. KGInventor: Alexander Pabst
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Patent number: 11276928Abstract: A monitoring/calibrating system is provided based on the amplitude and/or phase of electric and/or magnetic fields measurements. In transmitter mode of AUT, one or more probe sets are placed very close to the AUT around the radiation aperture of AUT to prevent probes effects on the AUT performance. For each amplitude/phase state of AUT controller, the near field data are measured and compared with a previously stored dataset. A successive method can reduce the error by changing the amplitude/phase of AUT controller. Moreover, a machine learning method can be used to classify the errors in near field data, errors in amplitude/phase of AUT controller, and automatically tuning the AUT controller. In receiver mode of AUT, the system is the same but the probe sets are working as transmitters to make a known near field around the AUT.Type: GrantFiled: November 12, 2020Date of Patent: March 15, 2022Inventors: Rashid Mirzavand Boroujeni, Pedram Mousavi
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Patent number: 11249171Abstract: A method of determining an alignment error of an antenna is described, wherein the antenna is installed at a vehicle and in cooperation with a detection device, and wherein the detection device is configured to determine a plurality of detections. Determining the plurality of detections comprises emitting a first portion of electromagnetic radiation through the antenna, receiving a second portion of electromagnetic radiation through the antenna, and evaluating the second portion of electromagnetic radiation in dependence of the first portion of electromagnetic radiation in order to localize areas of reflection of the first portion of electromagnetic radiation in the vicinity of the antenna. The method comprises determining a first detection and at least a second detection by using the detection device, and determining the alignment error by means of a joint evaluation of the first detection and the second detection.Type: GrantFiled: June 17, 2019Date of Patent: February 15, 2022Assignee: Aptiv Technologies LimitedInventors: Honghui Yan, Stephanie Lessmann, Alexander Ioffe
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Patent number: 11217874Abstract: One embodiment is an apparatus comprising a silicon-on-insulator (“SOI”) substrate comprising an insulating layer sandwiched in between a bottom silicon layer and a top silicon layer; a radiating element disposed on a top surface of the SOI substrate; and at least one cavity disposed in the SOI substrate surrounding the radiating element, wherein the at least one cavity extends from a bottom surface of the bottom silicon layer to a bottom surface of the insulating layer.Type: GrantFiled: March 18, 2020Date of Patent: January 4, 2022Assignee: ANALOG DEVICES, INC.Inventors: Ed Balboni, Ozan Gurbuz