Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: Provided is a rapid over-the-air (OTA) production line test platform, including a device under test (DUT), an antenna array and two reflecting plates. The DUT has a beamforming function. The antenna array is arranged opposite to the DUT, and emits beams with beamforming. Two reflecting plates are disposed opposite to each other, and are arranged between the DUT and the antenna array. The beam OTA test of the DUT is carried out by propagation of the beams between the antenna array, the DUT and the two reflecting plates. Accordingly, the test time can be greatly shortened and the cost of test can be effectively reduced. In addition to the above-mentioned rapid OTA production line test platform, platforms for performing the OTA production line test by using horn antenna arrays together with bending waveguides and using a 3D elliptic curve are also provided.

Abstract: A system for calibrating radio frequency test chambers is provided. The system comprises an antenna array with a plurality of antenna elements arranged in a three dimensional configuration, a plurality of power measuring units downstream to the plurality of antenna elements and a processing unit. In this context, the plurality of power measuring units output a power from each antenna elements corresponds to a radiation pattern generated by an incident test signal. The processing unit is configured to analyze the power distribution of the test signal in order to calculate a calibration.

Abstract: A method for performing active over-the-air measurements of a device under test with an antenna is described. The device under test with the antenna is provided. The device under test is arranged randomly in a measurement zone assigned to a measurement antenna. The phase center of the antenna of the device under test is determined. Measurement positions for the active over-the-air measurements are calculated that depend on an offset between the phase center determined and a center of the measurement zone. Further, a measurement system for over-the-air measurements is described.

Abstract: Aspects of this disclosure relate to an antenna array system and method of calibration using one or more probes disposed equidistant between antenna elements. In certain embodiments, calibration is performed between a probe and antenna elements, between a plurality of antenna elements, and/or between antenna elements on different antenna arrays.

Abstract: A compact shallow cavity-backed discone antenna array for conformal omnidirectional antenna applications is disclosed. The antenna array comprises a plurality of discone antennas arranged in a ring array within a circular contoured conical cavity. The cavity is covered with an electrically transparent radome. The individual discone antenna elements are fed with coaxial transmission lines. Good performance is demonstrated by simulation and by experiment in terms of reflection coefficient and omnidirectional gain radiation patterns from about 960 MHz to 1220 MHz. In one embodiment, the shallow cavity-backed discone antenna array may be used as a flush-mounted antenna that conforms to the outer mold line of an aircraft.

Abstract: A measurement system comprising an anechoic space, a measurement antenna, a device under test, a spectrum analyzer, and a power sensor. The device under test transmits a signal. The measurement antenna measures the signal transmitted by the device under test. The signal measured by the measurement antenna is forwarded at least partly to the power sensor. The power sensor triggers the spectrum analyzer to perform a measurement. Further, a method of measuring a signal is described.

Abstract: An antenna testing module includes a box, a platform within the box, and a detection module at least partially within the box. The box is configured to accommodate a device under test (DUT). The platform is configured to hold the DUT. The detection module is configured to receive an electromagnetic radiation emitted from the DUT and to locate an antenna phase center of the DUT.

Abstract: Provided in accordance with aspects of the present disclosure is a microwave ablation system including an introducer having a lumen therethrough, a stylus configured for slidable engagement within the lumen of the introducer, and a microwave ablation antenna configured to deliver energy to a target during an ablation procedure, wherein the microwave ablation antenna is configured for slidable engagement within the lumen of the introducer.

Abstract: The present disclosure is directed to a measurement system for measuring a reflection coefficient of a test sample, including: a transceiver antenna configured to be coupled to a source of electromagnetic radiation; and a RAM positioned between the transceiver antenna and a measurement region of the transceiver antenna, wherein the RAM comprises an aperture substantially orthogonal to and substantially aligned with a transceiving axis of the transceiver antenna. A method for obtaining error correction of a measurement system and a method of measuring a reflection coefficient in a test sample are also provided.

Abstract: A radio is disclosed which uses spatial streams expansion with directional antennas.

Abstract: Disclosed is an electronic device including an antenna including a radiating portion and a feeding portion connected to the radiating portion; a tunable element electrically connected to the radiating portion and configured to influence an electrical length of the radiating portion with respect to a specified frequency; an amplifier electrically connected to the feeding portion and configured to amplify a signal to be transmitted to an external electronic device through the radiating portion; and a control circuit electrically connected with the antenna, the tunable element, and the amplifier. The control circuit is configured to determine strength of a signal reflected from the radiating portion while the signal is transmitted to the external electronic device through the radiating portion; and adjust a value of the tunable element to reduce the strength of the reflected signal.

Abstract: A content signal switching controller receives first signal information about a first content signal provided by a first satellite antenna and received by a trunk distribution system. The first signal information indicates the quality of a satellite signal that is received by the first satellite antenna and that is converted to the first content signal. The content signal switching controller receives second signal information about a second content signal provided by a second satellite antenna. The second signal information indicates the quality of the satellite signal that is received by the second satellite antenna. In response to the content signal switching controller determining that the first signal information and the second signal information satisfy a first signal switching condition, a content signal switch instruction is provided to a switch device to switch the trunk distribution system from being provided the first content signal to being provided the second content signal.

Abstract: A radio frequency identification (RFID) tag includes an antenna operable to receive a radio frequency (RF) signal having a carrier frequency. The RFID tag further includes a tank circuit coupled to the antenna. The RFID tag further includes a tuning circuit operable to determine a received power level of the RF signal at the carrier frequency, determine whether the received power level is lower than a power level threshold. When the received power level is lower than the power level threshold: tuning circuit increases the input impedance of the RFID tag, determines a most recent power level of the received RF signal, and compares the most recent power level with the received power level. When the most recent power level is greater than the received power level, the tuning circuit incrementally increases the input impedance until the received power level is substantially equal to the power level threshold.

Abstract: Antenna characterization systems and methods are described for hardware-timed testing of integrated circuits (IC) with integrated antennas configured for over-the-air transmission and/or reception. An IC to be tested (e.g., the device under test (DUT)) may be mounted to an adjustable positioner in an anechoic chamber. Radio frequency (RF) characteristics (e.g., including transmission characteristics, reception characteristics, and/or beamforming characteristics) of the IC may be tested over-the-air using an array of antennas or probes within the anechoic chamber while continually transitioning the adjustable positioner through a plurality of orientations. Counters and reference trigger intelligence may be employed to correlate measurement results with orientations of the DUT.

Abstract: A measurement system for testing a device under test is described that comprises at least one signal unit for processing a signal, at least two measurement antennas, at least two reflectors, a shielded space, and a testing position for the device under test. Each measurement antenna is orientated with respect to the testing position such that the testing position is located in at least one of a side lobe area and a back lobe area of the measurement antennas. The reflectors are located such that each reflector generates and/or collimates a planar wave at different angles with respect to the testing position. Further, a method for performing test measurements is described.

Abstract: Provided a reverberation chamber including a pair of a transmitting and receiving antenna and a reflection plate configured to reflect an electromagnetic wave output from the transmitting and receiving antenna to a working volume in a beam direction to improve a field uniformity of the working volume in the reverberation chamber and increase an applicability of the reverberation chamber.

Abstract: A method of real-time transmission and demodulation of BeiDou satellite navigation signals, the method including: constructing a large-scale parallel signal transmission branch, grouping a satellite navigation message in a large scale and sequentially sending the grouped messages into the parallel signal transmission branch, obtaining a navigation satellite parallel transmission branch-dedicated sub-ranging code by using a non-linear function driven complex shift pseudo-random code generator and perform spectrum-spreading for the navigation message of each branch, performing modulation by same carrier with different frequency offsets, then forming a composite satellite navigation signal by superimposing carrier-modulated navigation signals of all branches and adding a noise, and sending the composite satellite navigation signal by a single antenna.

Abstract: A telecommunications network comprises multiple nodes linked by line-of-sight (LOS) signals. Directional antennas are located outside concealment screens to avoid attenuation through multiple screening layers. Directional LOS aiming between nodes is accomplished by fully rotable radomes within which multiple antennas are contained or by rotation of gimbaled antennas within the radomes. Network architecture is configured for both azimuthal and elevational LOS antenna aiming, with redundancy to re-route around disabled nodes.

Abstract: A measurement system for investigating the receive behavior of a device under test is provided. The measurement system comprises a test antenna, a test equipment connected to the test antenna, and a test position with respect to the device under test. In this context, the test equipment is configured to derive from geometrical information and radiation pattern data of the test antenna position based signal properties for transmitting via the test antenna.

Abstract: Various embodiments are described that relate to patch antenna elements and parasitic feed pads. A patch antenna element can have a resistance and reactance. The resistance can be desirable while the reactance can be undesirable. To counteract the reactance, a parasitic feed pad can be placed near the patch antenna element and the parasitic feed pad produces a capacitance. The capacitance balances out the reactance to cancel out one another. When two patch antenna elements and two parasitic feed elements are employed in one antenna stack, the stack antenna can function as a dual band antenna.

Abstract: The present invention provides a dipole fixation in an antenna system for fixing dipoles (1) on a reflector (2), the dipole fixation comprising fixing members (3) passing through apertures on the reflector (2) to fix the dipoles (1) on the reflector (2); a first non-conductive member (4) arranged between the dipoles (1) and the reflector (2); and a second non-conductive member (5) arranged between the fixing members (3) and the reflector (2). The dipole fixation of this invention avoids any metal contact between the dipoles and the reflector, guaranteeing the PIM reliability for a long time and obtaining a stable connection.

Abstract: An antenna system includes: a radiating element; a feed coupled to the radiating element at a first point on the radiating element and configured to convey energy to the radiating element; and a radiation-adjustment device coupled to the radiating element at a second point, configured to alter a radiation characteristic of the radiating element, and including: coarse-adjustment elements; an integrated-circuit chip including: switches, each coupled to a respective one of the coarse-adjustment elements where the coarse-adjustment elements are disposed external to the integrated-circuit chip; and a fine-adjustment circuit; the antenna system further including a controller communicatively coupled to the switches and to the fine-adjustment circuit, the controller configured to alter the radiation characteristic of the radiating element by selectively causing one or more of the switches to couple one or more of the coarse-adjustment elements to the radiating element, and by adjusting a value of the fine-adjustment

Abstract: A method for near-field reconstruction in indirect far-field systems is provided. The method comprises the steps of measuring a reference antenna for orthogonal field components in a direct spherical near-field system at a well geometrically defined distance (R0), measuring the reference antenna for orthogonal field components in an indirect far-field system and optimizing the orthogonal field components in the indirect far-field system with respect to the orthogonal field components in the direct spherical near-field system.

Abstract: Certain aspects are directed to a configuration sub-system for telecommunication systems. The configuration sub-system can include a test signal generator, a power measurement device, at least one additional power measurement device, and a controller. The test signal generator can be integrated into components of a telecommunication system. The test signal generator can provide a test signal to a signal path of the telecommunication system. The power measurement device and the additional power measurement device can respectively be integrated into different components of the telecommunication system. The power measurement device and the additional power measurement device can respectively measure the power of the test signal at different measurement points in the signal path. The controller can normalize signals transmitted via the telecommunication system by adjusting a path gain for the signal path based on measurements from the power measurement device and the additional power measurement device.

Abstract: A testing fixture used in an antenna testing process is provided. A cover unit having a second antenna portion is arranged on a base unit configured for an electronic structure having a first antenna portion to be placed thereon. The cover unit includes a non-metal interposing portion configured for pressing the electronic structure to separate the second antenna portion from the first antenna portion. Therefore, when the antenna testing process is performed on the electronic structure, a metal shielding effect is avoided, and an over the air testing environment is provided.

Abstract: To realize a wireless communication device enabling efficient mounting of a proximity sensor, the present invention is provided with: a first antenna; a second antenna which serves also as an electrode for detecting approach of an object; a wireless communicator for performing wireless communication with a connection destination, which uses the second antenna as an auxiliary in the communication, while being capable of performing the communication using the first antenna only; a detector for detecting approach of an object to the second antenna; a switch which couples the second antenna with either of the wireless communicator and the detector; and a controller for setting maximum transmission output of the wireless communicator at a predetermined value, on the basis of approach information on the object which is obtained by coupling of the second antenna with the detector performed by the switch, at a predetermined time interval.

Abstract: The embodiments described herein provide for composite panels that include elements that form one or more Radio Frequency (RF) antennas. The composite panels may be integrated along with other composite panels to form a composite structure for a vehicle. In some cases, the composite panels function both as elements of an RF antenna and as structural elements of the vehicle. In some cases, the composite panels function both as elements of an RF antenna and as a means for static charge dissipation. When operating as an RF antenna, the composite panels are inherently conformal with an outside surface of a composite structure.

Abstract: Various embodiments are presented of a system and method for testing (e.g., rapidly and cheaply) devices with antennas configured for radio frequency (RF) and/or millimeter wave (mmW) transmission and/or reception. A device to be tested (e.g., the device under test (DUT)) may be mounted to an interface in a measurement fixture (e.g., a socket, anechoic chamber, etc.). Power and data connections of the DUT may be tested over the interface, which may also provide connections for input/output signals, power, and control and may also provide positioning. RF characteristics (e.g., including transmission, reception, and/or beamforming) of the DUT may be tested over-the-air using an array of antennas or probes.

Abstract: A method and apparatus for performing TRP measurements of an antenna system uses a sampling grid that takes into account the spherical geometry and the directivity of the antenna under test, while considering test time. The optimization of the sampling grid balances the trade-off between reducing the number of samples to reduce test time, and ensuring accuracy of the TRP estimates.

Abstract: A local coil for a magnetic resonance tomography system is provided. The local coil has a coil winding and a preamplifier connected electrically thereto. The coil winding has a plurality of coil segments that are coupled capacitively to one another.

Abstract: A device (1) for measuring a wireless channel in any frequency band, with the device rotating and being autonomous. The device (1) comprises at least one antenna (2) that is connected to a processor (3) and powered by a battery, with all being mounted on a rotary platform (5), and with the processor (3) being complimented by at least one encoder (6) located in the stationary portion of the device (1) and an axle (7) of the rotary platform (5) that is connected to a motor (8) via the axle (7) in order to drive the rotary platform (5). The device (1) makes it possible to perform evaluations of the channel of the electromagnetic spectrum, not necessarily for 60 GHz. This autonomy makes it possible to perform measurements on the ground in a simple manner without the need to carry around complex equipment or additional power sources.

Abstract: An electronic device is provided, which includes a housing; a conductive member forming at least a part of the housing; first to third nonconductive members separating the conductive member, wherein the conductive member includes a first conductive pattern disposed between the first nonconductive member and the second nonconductive member, and a second conductive pattern disposed between the second nonconductive member and the third nonconductive member; a first feeding part connected to the first conductive pattern; a second feeding part connected to the second conductive pattern; a first ground part connected to the first conductive pattern at a point adjacent to the second nonconductive member; and a communication circuit electrically connected with the conductive member.

Abstract: Techniques for tuning a crossed-field antenna are provided. An example of an antenna system includes a D-plate with a D-plate feed conductor, such that the D-plate is a horizontal conductor raised above and insulated from a ground plane, an E-cylinder with an E-cylinder feed conductor, such that the E-cylinder is a vertical hollow conductive cylinder of smaller diameter than the D-plate, which is mounted concentrically above and insulated from the D-plate, a transmitter tuning circuit configured to receive a signal from a transmitter, an E-cylinder tuning circuit operably coupled to the transmitter tuning circuit and the E-cylinder feed conductor, and a D-plate tuning circuit operably coupled to the transmitter tuning circuit and the D-plate feed conductor.

Abstract: This application relates to a test chamber for testing a device under test (DUT), the test chamber comprising: a plurality of chamber walls defining an interior of the test chamber which are configured to provide an anechoic and shielded test chamber, an antenna arrangement which is arranged in the form of a plane-wave synthesizing array and which is configured to emit plane-waves into the interior of the test chamber, a receiving area for receiving the DUT, wherein in a test mode the receiving area forms a region of measurement of the DUT, wherein the receiving area is formed by a portion of a first wall of the test chamber and wherein the receiving area is configured such that during test mode heat from the DUT is transferred to the outside of the test chamber. The application further relates to a test system comprising such a test chamber.

Abstract: A method for execution by a RFID tag includes receiving, by an antenna of the RFID tag, an RF signal from an RFID reader, where the RF signal has a carrier frequency. The method further includes determining, by a tuning circuit of the RFID tag, a received power level of the RF signal at the carrier frequency and whether the received power level compares favorably to a power level threshold. When the received power level compares unfavorably to the power level threshold, the method further includes adjusting, by the tuning circuit, the input impedance of the RFID tag by adjusting a tank circuit of the RFID tag until the received power level compares favorably to the power level threshold, where the input impedance of the RFID tag is based on one or more of impedance of the antenna and impedance of the tank circuit.

Abstract: A system for testing a DUT having an AAS transceiver. The system includes a scanning array divided into first and partial scanning arrays including first and second probe antennas, respectively, the first partial scanning array determining a first portion and the second partial scanning array determining a second portion of a near field pattern of the DUT. A test transceiver receives an RF signal from the DUT via the scanning array while testing the DUT in a transmit mode. A processing unit selects a first reference probe antenna from the first probe antennas and a second reference probe antenna from the second probe antennas to provide reference signals, and to alternate between consecutively scanning first signals from the first probe antennas and comparing them to the second reference signal, and consecutively scanning second signals from the second probe antennas and comparing them to the first reference signal.

Abstract: An apparatus (100) and method (300) of detecting and determining a vector to a specified material using an H-field antenna (102A) and an E-field antenna (102B), each antenna having at least one coil portion (102A1, 102B1) wound around at least one corresponding rod portion (102B1, 102B2), the coil portions being electrically connected in parallel, and the rod portions being electrically connected in parallel. The specified material is deemed to be present in the field of view of the E-field antenna based upon a change in orientation of the H-field antenna when a first current is applied to the coil portions through a first resistor (606A). An orientation to, and a distance to, the specified material is determined based upon a new orientation of the H-field antenna and the resistivity of a second resistor (606B) when a second current is applied through the second resistor to the rod portions.

Abstract: A flexible planar antenna device and method for using the same is disclosed. In some embodiments, the flexible planar antenna device includes a planar body comprising a flexible dielectric material that enables the planar antenna device to be flexibly shapeable to a surface of a wireless device under test (DUT). The flexible planar antenna device further includes an antenna element contained within the planar body and for communicatively coupling with at least one antenna of the wireless DUT and at least one adhesive element that enables the planar body to attach to and conform to the surface of the DUT.

Abstract: Techniques for tuning a crossed-field antenna are provided. An example of an antenna system includes a D-plate with a D-plate feed conductor, such that the D-plate is a horizontal conductor raised above and insulated from a ground plane, an E-cylinder with an E-cylinder feed conductor, such that the E-cylinder is a vertical hollow conductive cylinder of smaller diameter than the D-plate, which is mounted concentrically above and insulated from the D-plate, a transmitter tuning circuit configured to receive a signal from a transmitter, an E-cylinder tuning circuit operably coupled to the transmitter tuning circuit and the E-cylinder feed conductor, and a D-plate tuning circuit operably coupled to the transmitter tuning circuit and the D-plate feed conductor.

Abstract: This invention presents a RF channel emulator for testing a large-scale Multiple-User Multiple-Input Multiple-Output (MU-MIMO) wireless communication system, including embodiments of using over-the-air channels for connecting a RF channel emulator and a large-scale MU-MIMO wireless communication system, calibration processes that maintain the over-the-air channel reciprocity, and emulation of carrier aggregation.

Abstract: Altitude based device management is provided herein. A method can comprise transmitting, by a mobile device comprising a processor, a signaling message to a network device of a wireless network. The signaling message can comprise first data indicating a device type of the mobile device and second data indicating a distance measurement of the mobile device with respect to a reference point. The method can also comprise implementing, by the mobile device, a first instruction related to a power setting and a second instruction related to an operating parameter. The first instruction and the second instruction can be received from the network device and can be based on the device type of the mobile device and the distance measurement of the mobile device.

Abstract: A system and method for providing communications with a Low Earth Orbit (LEO) satellite constellation using a non-omnidirectional antenna is disclosed. A system and method for determining blockages around a non-omnidirectional antenna for use with a Low Earth Orbit (LEO) constellation is disclosed. The method including: receiving System Information (SI) including ephemeris data for satellites in the LEO constellation; receiving a segment division that divides a ground about the antenna into segments; and determining a segment blocking information for the antenna.

Abstract: A distance between a center of a first probe antenna and a center of a second probe antenna in a measurement plane is longer than a distance between the center of the first probe antenna and a center of a third probe antenna in the measurement plane by a distance between two measurement positions adjacent to each other in a horizontal direction. A distance between a center of a fourth probe antenna and a center of a fifth probe antenna in the measurement plane is longer than a distance between the center of the fourth probe antenna and a center of a sixth probe antenna in the measurement plane by a distance between two measurement positions adjacent to each other in a vertical direction.

Abstract: A system for determining the radiation pattern of an antenna array comprising a plurality of antenna elements comprises a signal generator for generating a test signal, a number of probes for measuring a magnitude of the signals emitted by the antenna elements when driven with the test signal in a first surface and in a second surface, wherein the distance of the first surface to the antenna elements is smaller than the distance of the second surface to the antenna elements, and a pattern calculation unit for calculating the radiation pattern of the antenna array based on the magnitudes measured in the first surface and the second surface.

Abstract: A testing system is described, wherein said testing system is configured to perform a multipaction test on a device under test. Said testing system comprises a signal generation unit being configured to stimulate an input of said device under test, a receiving unit being configured to receive and measure at least one output signal of said device under test in order to obtain data related to a multipaction occurrence. Said signal generation unit and said receiving unit are controlled such that both units are operated simultaneously. Said signal generation unit is configured to generate a testing signal for stimulating said input, said testing signal comprising at least two carriers simultaneously. Further, a method for testing a device under test is described.