Slot Type Patents (Class 343/746)
  • Patent number: 10677864
    Abstract: A tuning/detuning structure and a detuning method for an RF coil use an RF power source, a first impedance circuit, a first RF line, and a first port having a first guide leg end and a first input end, with the first guide leg end being connected to a first end ring capacitance of the RF coil. When the RF coil needs to be detuned, the first input end is connected to the first impedance circuit via the first RF line. When the RF coil needs to transmit an RF pulse signal, the first input end is connected to the RF power source via the first RF line. The need for a switch element is thereby reduced as is harm resulting from breakdown of such a switch element. An impedance circuit can be combined with a switch element to realize detuning jointly, and a good detuning effect can be achieved by a small number of switch elements.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: June 9, 2020
    Assignee: Siemens Healthcare GmbH
    Inventors: Hou Quan Lin, Ying Lun Wang, Wen Ming Li, JianMin Wang, Juergen Nistler
  • Patent number: 10476136
    Abstract: An electronic device may be provided with wireless circuitry, a conductive housing, and a display. The display may have an active area that displays image data and an inactive area that does not display image data. The active area may completely surround the inactive area at a front face of the device. A speaker port may be aligned with the inactive area and may emit sound through the inactive area. The wireless circuitry may include first and second antenna arrays. The first array may be configured to transmit and receive wireless signals at frequencies between 10 GHz and 300 GHz through the inactive area of the display. The second array may be configured to transmit and receive wireless signals at frequencies between 10 GHz and 300 GHz through a slot in a rear wall of the conductive housing. Control circuitry may perform beam steering using the first and second arrays.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: November 12, 2019
    Assignee: Apple Inc.
    Inventors: Matthew A. Mow, Basim H. Noori, Khan M. Salam, Mattia Pascolini, Ming-Ju Tsai, Simone Paulotto, Travis A. Barbieri, Victor C. Lee, Xu Han
  • Patent number: 10447318
    Abstract: A wireless communication device is presented for use with a sensor. The wireless communication device includes: an antenna, a driver circuit and a bias circuit. The driver circuit is electrically coupled to the antenna and includes at least one pair of cross-coupled transistors. The bias circuit is electrically coupled to the driver circuit. In a transmit mode, the bias circuit biases the driver circuit with a first bias current. In response to the first bias current, the driver circuit oscillates the antenna. In a receive mode, the bias circuit biases the driver circuit with a second bias current, such that the first bias current differs from the second bias current. In response to the second bias current, the bias circuit amplifies a signal received by the antenna.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: October 15, 2019
    Assignee: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: David T. Blaauw, David D. Wentzloff, Li-Xuan Chuo, Hun-Seok Kim
  • Patent number: 10431896
    Abstract: Multiband antenna in the form of a three dimensional solid have a plurality of radiating cavities disposed therein.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: October 1, 2019
    Assignee: CUBIC CORPORATION
    Inventors: Anatoliy Boryssenko, Kenneth Vanhille, Jennifer Arroyo
  • Patent number: 10411354
    Abstract: An antenna system includes an antenna body, a tunable component, and at least one of a first filter and a second filter. The antenna body is connected to the tunable component. The first filter is connected in parallel to the tunable component, and the first filter presents a high impedance characteristic in a low frequency band, and presents a low impedance characteristic in a high frequency band. The second filter is connected in series between the antenna body and the tunable component, a first end of the second filter is connected to the antenna body, and a second end of the second filter is connected to the tunable component. The second filter presents a low impedance characteristic in a low frequency band, and presents a high impedance characteristic in a high frequency band.
    Type: Grant
    Filed: January 7, 2015
    Date of Patent: September 10, 2019
    Assignee: HUAWEI DEVICE CO., LTD.
    Inventors: Xuefei Zhang, Lei Wang, Kun Feng, Chi Liu
  • Patent number: 10209284
    Abstract: A system for testing advanced antennas includes an antenna unit controller, a radio frequency instrument, and a test controller. The antenna unit controller is configured to connect to a device that includes an advanced antenna under test in an anechoic chamber. The radio frequency instrument is connected to a probe antenna in the anechoic chamber. The test controller is configured to control the test of the advanced antenna by controlling the antenna unit controller to reconfigure the advanced antenna under test, and by controlling the radio frequency instrument to communicate wirelessly with the device via the probe antenna in each of a sequence of multiple configurations of the advanced antenna while the advanced antenna remains in the anechoic chamber.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: February 19, 2019
    Assignee: Keysight Technologies, Inc.
    Inventor: Dean Gienger
  • Patent number: 10116052
    Abstract: A system, in some embodiments, comprises: a processor; a transceiver coupled to the processor; and an antenna including a central element that connects to one or more of the processor and the transceiver, said antenna further including multiple coupling elements that electromagnetically couple to the central element, wherein each of the multiple coupling elements comprises a separate variable capacitor.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: October 30, 2018
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Mohammad-Reza Nezhad-Ahmadi, Andrew Kuikman
  • Patent number: 9843091
    Abstract: An electronic device may have wireless circuitry with antennas. An antenna resonating element arm for an antenna may be formed from peripheral conductive structures running along the edges of a device housing that are separated from a round by an elongated opening. The electronic device may have a central longitudinal axis that divides the antenna resonating element arm and other antenna structures into symmetrical halves that exhibit mirror symmetry with respect to the central longitudinal axis. The antenna structures may include symmetrical slot antenna resonating elements on opposing sides of the central longitudinal axis. Electrical components such as switches and antenna tuning inductors may be coupled to the antenna structures in a configuration that is symmetrical with respect to the central longitudinal axis. The electrical components may be used to place the antenna structures in an unflipped configuration or in a symmetrical flipped configuration.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: December 12, 2017
    Assignee: Apple Inc.
    Inventors: Matthew A. Mow, Xu Han, James G. Judkins, Liang Han, Mattia Pascolini, Ming-Ju Tsai, Nanbo Jin, Thomas E. Biedka, Victor C. Lee, Yuehui Ouyang
  • Patent number: 9761951
    Abstract: An adjustable monopole antenna apparatus and methods. In one embodiment, the antenna apparatus is intended for mobile terminals. In an exemplary implementation, there is an adjusting point is provided from which a conductor is branched to an adjusting circuit. The adjusting circuit comprises a switch and alternative reactive elements connected to ground, selectable by the switch. When a reactive element is changed, the electric length and resonance frequency of the radiator change, and the corresponding operating band shifts. If the antenna is configured as a dual-band antenna, the above-mentioned operating band is the lower band. One or more higher operating bands are based e.g. on radiating slots implemented by the same radiator conductor. The operating band of the exemplary embodiment of the antenna below the frequency 1 GHz can be shifted in a wider range than in the corresponding known antennas.
    Type: Grant
    Filed: October 20, 2010
    Date of Patent: September 12, 2017
    Assignee: PULSE FINLAND OY
    Inventor: Reetta Kuonanoja
  • Patent number: 9634378
    Abstract: An electronic device such as a handheld device may have a rectangular housing with a rectangular periphery. A conductive peripheral housing member may run along the rectangular periphery and may surround the rectangular housing. Radio-frequency transceiver circuitry within the electronic device may be coupled to antenna structures for transmitting and receiving radio-frequency signals. The conductive peripheral housing member may form part of the antenna structures. A gap in the conductive peripheral housing member may be filled with dielectric. The conductive peripheral housing member may be configured to form a recess. The recess may have the shape of a rectangle, oval, diamond, or other shape that overlaps and is bisected by the gap. The recess may also have the shape of a groove that extends around the entire periphery of the housing. The dielectric in the recess may include one or more different materials such as clear and opaque polymers.
    Type: Grant
    Filed: February 2, 2015
    Date of Patent: April 25, 2017
    Assignee: Apple Inc.
    Inventors: Albert J. Golko, Daniel W. Jarvis
  • Patent number: 9601828
    Abstract: This disclosure provides systems, methods, and apparatus for an initial network acquisition process via multiple antennas. In one aspect a method of establishing communications via a wireless network at a wireless communications apparatus is provided. The method includes attempting an initial acquisition process, over one or more frequencies, for establishing communications over the wireless network via a transmit circuit and a receive circuit transmitting and receiving via a first antenna. The method further includes switching the transmit circuit and the receive circuit from transmitting and receiving via the first antenna to a second antenna in response to detecting failure of the initial acquisition process. The switching is independent of a performance metric of the first or the second antenna. The method further includes re-attempting the initial acquisition process based on the switching to the second antenna over the one or more frequencies.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: March 21, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Ning He, Daniel Fred Filipovic, Ramesh C. Chirala
  • Patent number: 9425831
    Abstract: An electronic device including a tunable antenna, a radio frequency (RF) signal transceiving module, a coupler and a control unit, is provided. The RF signal transceiving module is coupled to the tunable antenna, transmits at least one RF signal through the tunable antenna. The coupler is coupled between the tunable antenna and the RF signal transceiving module, and couples the at least one RF signal to derive a coupling signal. The control unit receives the coupling signal and generates at least one control signal according to a signal strength of the RF signal in a specific frequency band, and outputs the at least one control signal to the tunable antenna so as to adjust a working frequency band of the tunable antenna.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: August 23, 2016
    Assignee: Getac Technology Corporation
    Inventor: Yen-Ching Lee
  • Patent number: 9356353
    Abstract: An antenna structure and methods are presented. A conductive resonator comprises a conductive ring configured to support an electromagnetic current, and a plurality of conductive teeth. The conductive teeth are distributed around an edge of the conductive ring, and are configured to control a flow of the electromagnetic current and tune a response of the antenna structure.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: May 31, 2016
    Assignee: The Boeing Company
    Inventor: Charles W. Manry, Jr.
  • Patent number: 9306288
    Abstract: An antenna apparatus for a mobile terminal is provided. The antenna apparatus includes an antenna pattern, a first electric circuit and a second electric circuit respectively connected between both ends of the antenna pattern and a system ground, and a third electric circuit disposed between the antenna pattern and a feeding line, wherein the first electric circuit and the second electric circuit extend electrical wavelengths of the antenna pattern and the third electric circuit increases input impedance matching.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: April 5, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jungsik Park, Sooung Chun
  • Patent number: 9041606
    Abstract: A bezel forms a continuous, uninterrupted outer perimeter around the outside of a handheld radio device. The bezel is made of an electrically conductive material and is used as an antenna element. The bezel can be operated in either a common excitation mode or a differential excitation mode, depending on whether a user is presently holding the device, and making contact with the bezel.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: May 26, 2015
    Assignee: Motorola Solutions, Inc.
    Inventors: Antonio Faraone, Giorgi G. Bit-Babik
  • Publication number: 20150092623
    Abstract: An antenna module for wireless communication comprises an antenna element, a first port and a second port. The antenna element comprises a first resonance frequency and a second resonance frequency. The first port is configured to receive or provide a first radio frequency signal with a first frequency range and the second port is configured to receive or provide a second radio frequency signal with a second frequency range. The first frequency range is different from the second frequency range. Further, the first resonance frequency is located in the first frequency range and the second resonance frequency is located in the second frequency range. The antenna element is configured to transmit or receive the first radio frequency signal and the second radio frequency signal simultaneously.
    Type: Application
    Filed: September 5, 2014
    Publication date: April 2, 2015
    Inventors: Simon Svendsen, Ole Jagielski, Finn Hausager
  • Patent number: 8970378
    Abstract: Microstrip patch antenna (46), feed structure (48), and matching circuit (50) designs for an RFID tag (10). A balanced feed design using balanced feeds coupled by a shorting stub (56) to create a virtual short between the two feeds so as to eliminate the need for physically connecting the substrate to the ground plane. A dual feed structure design using a four-terminal IC can be connected to two antennas (46a,46b) resonating at different frequencies so as to provide directional and polarization diversity. A combined near-field/far-field design using a microstrip antenna providing electromagnetic coupling for far-field operation, and a looping matching circuit providing inductive coupling for near-field operation. A dual-antenna design using first and second microstrip antennas providing directional diversity when affixed to a cylindrical or conical object, and a protective superstrate (66). An annular antenna (46c) design for application to the top of a metal cylinder around a stem.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: March 3, 2015
    Assignee: University of Kansas
    Inventors: Daniel D. Deavours, Mutharasu Sivakumar
  • Patent number: 8957817
    Abstract: A coplanar waveguide (CPW) square-ring slot antenna for use in wireless communication systems is miniaturized and reconfigurable by the integration of ferroelectric (FE) BST (barium strontium titanate) thin film varactors therein. The slot antenna device includes a sapphire substrate, top and bottom metal layers, and a thin ferroelectric BST film layer, where the FE BST varactors are integrated at the back edge of the antenna on the top metal layer.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: February 17, 2015
    Assignee: University of Dayton
    Inventors: Hai Jiang, Guru Subramanyam
  • Publication number: 20140266941
    Abstract: An electronic device may be provided with a housing. The housing may have a periphery that is surrounded by peripheral conductive structures such as a segmented peripheral metal member. A segment of the peripheral metal member may be separated from a ground by a slot. An antenna feed may have a positive antenna terminal coupled to the peripheral metal member and a ground terminal coupled to the ground and may feed both an inverted-F antenna structure that is formed from the peripheral metal member and the ground and a slot antenna structure that is formed from the slot. Control circuitry may tune the antenna by controlling adjustable components that are coupled to the peripheral metal member. The adjustable components may include adjustable inductors and adjustable capacitors.
    Type: Application
    Filed: December 4, 2013
    Publication date: September 18, 2014
    Applicant: Apple Inc.
    Inventors: Enrique Ayala Vazquez, Hongfei Hu, Mattia Pascolini, Yuehui Ouyang, Yijun Zhou, Matthew A. Mow, Robert W. Schlub, Erdinc Irci, Salih Yarga, Ming-Ju Tsai, Liang Han, Thomas E. Biedka, Nicholas S. Reimnitz
  • Patent number: 8786504
    Abstract: A circuit capable of automatically calibrating a resonant frequency of an antenna includes the antenna, a switch, a conversion unit, a count comparator, and a capacitor array. The switch is coupled to the antenna for being turned on and turned off according to a pulse. The antenna is used for generating the resonant frequency according to on and off of the switch. The conversion unit is coupled to the antenna for generating a clock according to a signal with the resonant frequency. The count comparator is coupled to the conversion unit for counting a number generated by a reference clock during a period of the clock, and comparing the pulse number with a predetermined value to generate an adjustment signal. The capacitor array is used for adjusting capacitance of the capacitor array according to the adjustment signal.
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: July 22, 2014
    Assignee: AMICCOM Electronics Corporation
    Inventors: Hsin-Chin Hsu, Fang-Lih Lin, Chih-Hung Cheng
  • Publication number: 20140184456
    Abstract: An antenna and a communication system with the antenna are provided. The antenna may include a first layer including a plurality of folded stubs, a second layer including a pattern of the folded stubs, and a third layer connected to ground is disposed between the first layer and the second layer.
    Type: Application
    Filed: January 2, 2014
    Publication date: July 3, 2014
    Applicants: AJOU UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION, SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byung Moo LEE, Byung Chang KANG, Jong Ho BANG, Jin Do BYUN, Hai-Young LEE
  • Publication number: 20140187178
    Abstract: A method for tuning an antenna comprising determining an operating frequency band of the antenna, and adjusting a capacitance of a tunable load according to the operating frequency band, wherein the tunable load is electromagnetically coupled to the antenna via a parasitic arm, and wherein the operating frequency band depends on the capacitance.
    Type: Application
    Filed: December 31, 2012
    Publication date: July 3, 2014
    Applicant: Futurewei Technologies, Inc.
    Inventors: Shing Lung Steven Yang, Ping Shi, Daejoung Kim, Wee Kian Toh, Navid Nader, Guangdong Jiang
  • Publication number: 20140145891
    Abstract: A patch radiator suitable for operation with circular or dual linear polarizations is described. The patch radiator includes a patch antenna element and a pair of excitation circuits. The excitation circuits include a feed line and a turning circuit configured such that a single feed line enables independent operation of each polarization. This allows for the operation of the patch and therefore array as either linear, slant, elliptical, or circular polarization.
    Type: Application
    Filed: November 26, 2012
    Publication date: May 29, 2014
    Applicant: RAYTHEON COMPANY
    Inventors: Alan Palevsky, John J. Magnani
  • Patent number: 8698678
    Abstract: A mobile wireless communication device may include a multiple-band antenna on an antenna carrier and connected to a wireless transceiver. The multiple-band antenna may include an elongate base conductor having opposing first and second ends and opposing first and second sides extending between the first and second ends. The elongate base conductor may have a first L-shaped slot with a proximal end opening outwardly at the first side of the elongate base conductor adjacent the first end thereof and having a distal end adjacent a medial portion of the elongate base conductor. The elongate base conductor may have a second L-shaped slot with a proximal end opening outwardly at the first side of the elongate base conductor adjacent the medial portion thereof and having a distal end adjacent the second end of the elongate base conductor. The distal end of the second L-shaped slot may extend closer to the second end of the elongate base conductor than the distal end of the first L-shaped slot.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: April 15, 2014
    Assignee: BlackBerry Limited
    Inventors: Firass Mirza Badaruzzaman, Shing Lung Steven Yang, Sarah L. Kirchoff
  • Patent number: 8669904
    Abstract: The present invention relates to a near-field antenna. In an aspect, the near-field antenna may include a dielectric layer, a ground plane formed on one side of the dielectric layer, a plurality of U-shaped slots periodically disposed in the ground plane for radiation, and a microstrip line provided on the other side of the dielectric layer for power feeding. In another aspect, the near-field antenna may include a dielectric layer, a ground plane formed on one side of the dielectric layer, a plurality of U-shaped slots periodically disposed in the ground plane for radiation, and a microstrip line configured to have a plurality of U-shaped slots diverged on the other side of the dielectric layer in parallel for power feeding, have the plurality of U-shaped slots periodically disposed in series in respective diverged lines, and have an end shorted to form standing waves.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: March 11, 2014
    Assignee: Electronics & Telecommunications Research Institute
    Inventors: Won Kyu Choi, Jae Young Jung, Jong Suk Chae
  • Publication number: 20140062818
    Abstract: A mobile device includes a ground plane, a grounding branch, and a feeding element. The grounding branch is coupled to the ground plane, wherein a slot is formed between the ground plane and the grounding branch. The feeding element extends across the slot. The feeding element is coupled between the grounding branch and a signal source. An antenna structure is formed by the feeding element and the grounding branch.
    Type: Application
    Filed: August 29, 2012
    Publication date: March 6, 2014
    Applicant: HTC CORPORATION
    Inventors: Tiao-Hsing TSAI, Chien-Pin CHIU, Hsiao-Wei WU, Ying-Chih WANG
  • Patent number: 8564439
    Abstract: Microstrip patch antenna (46), feed structure (48), and matching circuit (50) designs for an RFID tag (10). A balanced feed design using balanced feeds coupled by a shorting stub (56) to create a virtual short between the two feeds so as to eliminate the need for physically connecting the substrate to the ground plane. A dual feed structure design using a four-terminal IC can be connected to two antennas (46a,46b) resonating at different frequencies so as to provide directional and polarization diversity. A combined near-field/far-field design using a microstrip antenna providing electromagnetic coupling for far-field operation, and a looping matching circuit providing inductive coupling for near-field operation. A dual-antenna design using first and second microstrip antennas providing directional diversity when affixed to a cylindrical or conical object, and a protective superstrate (66). An annular antenna (46c) design for application to the top of a metal cylinder around a stem.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: October 22, 2013
    Assignee: The University of Kansas
    Inventors: Daniel D. Deavours, Mutharasu Sivakumar
  • Publication number: 20130234901
    Abstract: An open slot antenna is formed in a planar conductor on a dielectric substrate. A tuning circuit is disposed toward an open end of the slot antenna and is used to select a resonant frequency of the antenna by electrically connecting one of multiple tuning elements across opposing sides of the slot. The tunable antenna so constructed may be incorporated into a handheld mobile communication device that can be operated in different geographic regions, each having different regional communication standards under which mobile communications are conducted.
    Type: Application
    Filed: July 25, 2012
    Publication date: September 12, 2013
    Applicant: ACER INCORPORATED
    Inventors: Chih-Hua Chang, Yu-Kai Hung
  • Patent number: 8489162
    Abstract: A user device having a slot antenna formed in metallic material of a structural member is described.
    Type: Grant
    Filed: August 17, 2010
    Date of Patent: July 16, 2013
    Assignee: Amazon Technologies, Inc.
    Inventors: Weiping Dou, James Samuel Bowen
  • Publication number: 20130141295
    Abstract: A coplanar waveguide (CPW) square-ring slot antenna for use in wireless communication systems is miniaturized and reconfigurable by the integration of ferroelectric (FE) BST (barium strontium titanate) thin film varactors therein. The slot antenna device includes a sapphire substrate, top and bottom metal layers, and a thin ferroelectric BST film layer, where the FE BST varactors are integrated at the back edge of the antenna on the top metal layer.
    Type: Application
    Filed: June 6, 2012
    Publication date: June 6, 2013
    Applicant: UNIVERSITY OF DAYTON
    Inventors: Hai Jiang, Guru Subramanyam
  • Patent number: 8405563
    Abstract: An embodiment of the present invention an apparatus, comprising an apparatus, comprising an adaptively-tuned antenna including a variable reactance network connected to the antenna, an RF field probe located near the antenna, an RF detector to sense voltage from the field probe, a controller that monitors the RF voltage and supplies control signals to a driver circuit and wherein the driver circuit converts the control signals to bias signals for the variable reactance network.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: March 26, 2013
    Assignee: Research In Motion RF, Inc.
    Inventors: William E. McKinzie, Keith Manssen, Gregory Mendolia
  • Patent number: 8396508
    Abstract: In a video processing system, a method and system for a mobile receiver architecture for European (EU) Band cellular and broadcasting are provided. Receive channels may be processed in at least one radio frequency front end (RFFE) in a mobile terminal and may comprise at least one of a VHF/UHF broadcast channel and EU band cellular channels capable of carrying voice and data. The cellular channels may be WCDMA 2100 MHz, GSM 1800 or 900 MHz. A single cellular/broadcast radio frequency integrated circuit (RFIC) may be utilized for processing the receive channels. In another embodiment, a cellular band RFIC may process the EU band cellular channels and a broadcast RFIC may process the broadcast channel. Moreover, a first RFIC may process the WCDMA channel, a second RFIC may process the GSM channels, and a broadcast RFIC may process the broadcast channel.
    Type: Grant
    Filed: December 13, 2004
    Date of Patent: March 12, 2013
    Assignee: Broadcom Corporation
    Inventors: Pieter Gert Wessel van Rooyen, Kwan Young Shin
  • Publication number: 20130038494
    Abstract: An adjustable monopole antenna apparatus and methods. In one embodiment, the antenna apparatus is intended for mobile terminals. In an exemplary implementation, there is an adjusting point is provided, from which a conductor is branched to an adjusting circuit. The adjusting circuit comprises a switch and alternative reactive elements connected to ground, selectable by the switch. When a reactive element is changed, the electric length and resonance frequency of the radiator change, and the corresponding operating band shifts. If the antenna is configured as a dual-band antenna, the above-mentioned operating band is the lower band. One or more higher operating bands are based e.g. on radiating slots implemented by the same radiator conductor. The operating band of the exemplary embodiment of the antenna below the frequency 1 GHz can be shifted in a wider range than in the corresponding known antennas.
    Type: Application
    Filed: October 20, 2010
    Publication date: February 14, 2013
    Inventor: Reetta Kuonanoja
  • Patent number: 8253640
    Abstract: A highly efficient thin slot antenna having a cavity and an RFID tag device are provided, in which such flexible properties can be provided to the antenna that the antenna can be worn on the curved surface of a human body, an object, or the like as well as the antenna can be relatively freely deformed, and changes in the characteristics caused by deformation and changes in the characteristics caused by a product to mount the antenna thereon. are extremely small. Conductive foil such as aluminum or foil vapor deposited with conductive metal such as aluminum is used to form a bag shape for configuring a bag-shaped product having a cavity (12). A relatively soft dielectric sheet (13) is provided inside the cavity (12), and a slot (14) is provided lengthwise on one side of the bag-shaped product at the center position in the width direction.
    Type: Grant
    Filed: September 3, 2007
    Date of Patent: August 28, 2012
    Inventors: Hitoshi Kitayoshi, Kunio Sawaya
  • Patent number: 8209846
    Abstract: Methods for assembling an active array system are described. In one exemplary embodiment, an active subarray panel assembly having a first surface with a first array of electrical contacts and a radiator aperture with an array of radiator structures and an aperture mounting surface with a second array of electrical contacts are assembled together. The first surface of the panel assembly and the aperture mounting surface of the radiator aperture are brought into contact with an adhesive layer including microwave interconnects in a pattern corresponding to the first array of electrical contacts and the second array of electrical contacts so that the adhesive layer is between the first surface of the panel assembly and the aperture mounting surface of the radiator aperture. Pressure, heat and vacuum are applied to cure the adhesive and complete engagement of the microwave interconnects.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: July 3, 2012
    Assignee: Raytheon Company
    Inventors: Avery Y. Quil, Clifton Quan, Alec Ekrnekjl, Jason G. Milne
  • Patent number: 8125399
    Abstract: An embodiment of the present invention an apparatus, comprising an apparatus, comprising an adaptively-tuned antenna including a variable reactance network connected to the antenna, an RF field probe located near the antenna, an RF detector to sense voltage from the field probe, a controller that monitors the RF voltage and supplies control signals to a driver circuit and wherein the driver circuit converts the control signals to bias signals for the variable reactance network.
    Type: Grant
    Filed: January 16, 2007
    Date of Patent: February 28, 2012
    Assignee: Paratek Microwave, Inc.
    Inventors: William E. McKinzie, Greg Mendolia, Keith Manssen
  • Publication number: 20120013514
    Abstract: Systems and methods for exciting long slot radiators of an RF antenna are provided. In one embodiment, the invention relates to a radiator transition assembly for exciting a long slot radiator of an antenna, the transition assembly including a folded flexible circuit substrate including at least two folds forming a long slot radiator, an excitation circuitry configured to generate signals for exciting the long slot radiator, and a microstrip transmission line coupled to the excitation circuitry and positioned along the folded flexible circuit substrate, where the microstrip transmission line extends across an opening of the long slot radiator.
    Type: Application
    Filed: July 14, 2010
    Publication date: January 19, 2012
    Inventors: Fangchou Yang, Hee Kyung Kim, Shahrokh Hashemi-Yeganeh, Clifton Quan, Alberto F. Viscarra, Robert W. Ladera
  • Patent number: 7986278
    Abstract: A slot antenna positioned on a substrate includes a grounding portion, a radiating portion, and a feeding portion. The grounding portion is positioned on the substrate. The radiating portion is parallel to the grounding portion and shaped like an irregular octagon. The radiating portion includes an irregular slot that is defined substantially in the center of the irregular octagon. The feeding portion electrically connects the radiating portion to the grounding portion for feeding electromagnetic signals.
    Type: Grant
    Filed: September 15, 2008
    Date of Patent: July 26, 2011
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Sueng-Chien Wu
  • Publication number: 20110074642
    Abstract: An antenna may include an enclosure formed by a front wall and a back wall opposite to the front wall, and a front face and a back face opposite to the front face. Both the front face and the back face extend between the front wall and the back wall to form a cavity within the enclosure. The enclosure further includes a slot formed in the front face to form a cavity backed slot. A radio frequency (RF) connector is mounted in the front wall. A shaped feed line is mounted within the cavity and is electrically connected to the RF connector to transmit and receive RF energy. The shaped feed line extends across the slot to couple the RF energy between the slot and the shaped feed line. The shaped feed line has a predetermined structure to substantially reduce an electric field strength to improve power handing of the antenna.
    Type: Application
    Filed: September 29, 2009
    Publication date: March 31, 2011
    Inventors: GARY E. MILLER, WILLIAM O. PRICE
  • Publication number: 20110012800
    Abstract: A multi-frequency antenna comprising an IMD element, one or more active tuning elements and one or more parasitic elements. The IMD element is used in combination with the active tuning and parasitic elements for enabling a variable frequency at which the antenna operates, wherein, when excited, the parasitic elements may couple with the IMD element to change an operating characteristic of the IMD element.
    Type: Application
    Filed: September 29, 2010
    Publication date: January 20, 2011
    Applicant: ETHERTRONICS, Inc.
    Inventors: Jeff Shamblin, Chulmin Han, Rowland Jones, Sebastian Rowson, Laurent Desclos
  • Publication number: 20100231470
    Abstract: This application relates to slot antenna devices based on Composite Right and Left Handed (CRLH) metamaterial (MTM) structures.
    Type: Application
    Filed: March 12, 2010
    Publication date: September 16, 2010
    Applicant: RAYSPAN CORPORATION
    Inventors: Cheng-Jung Lee, Ajay Gummalla, Maha Achour
  • Patent number: 7633458
    Abstract: Provided is an antenna which has a small-sized planar constitution as can be easily mounted on a small-sized radio device and which can form a principal beam having a vertical polarization in directions of low and high elevation angles. On the surface of a substrate 11, slot elements 13A and 13B having a length of about one half wavelength are arranged in parallel at a predetermined distance d1, and a reflecting plate 14 is arranged at a predetermined distance h from the mounting face of the slot elements 13A and 13B. On the back of the substrate 11, parasitic elements 15A to 15D are made of a copper foil pattern and are arrayed to intersect the slot elements 13A and 13B at right angles. A switching element 16A is connected with the parasitic elements 15A and 15B, and a switching element 16B is connected with the parasitic elements 15C and 15D.
    Type: Grant
    Filed: July 21, 2005
    Date of Patent: December 15, 2009
    Assignee: Panasonic Corporation
    Inventors: Hiroyuki Uno, Yutaka Saito, Genichiro Ohta, Yoshio Koyanagi
  • Patent number: 7528785
    Abstract: A wireless communication device and method for identifying a container, or communication information about a container using a slot in the container as an antenna. The device includes a wireless communication device for transmitting information regarding the container. The container includes an outer wall forming rim and a slot between the rim edge and the outer wall that is circular and continues without boundaries. The wireless communication device is coupled to the slot to provide the slot antenna for communications. An impedance matching network is additionally provided to make the operating frequency of the slot substantially the same as the operating frequency of the wireless communication device. Alternatively, shorting posts may be placed in the slot to define boundaries of the slot to match the operating frequency of the slot to the operating frequency of the antenna. Multiple feed points may be provided between the wireless communication device and the slot.
    Type: Grant
    Filed: December 23, 2005
    Date of Patent: May 5, 2009
    Inventors: Ian J Forster, Peter Robert George Horrell
  • Publication number: 20080258985
    Abstract: The present invention relates to an internal antenna for a handset and a design method thereof. The present invention provides an internal antenna for a handset and a design method thereof characterized in that a L/C element is attached to a slot line of an internal antenna, the attached L/C element is moved along the slot line, or the L/C element having a predetermined inductance/capacitance is attached and detached, thereby easily matching a resonant frequency.
    Type: Application
    Filed: February 18, 2005
    Publication date: October 23, 2008
    Applicant: E.M.W. ANTENNA CO., LTD.
    Inventors: Byung-Hoon Ryou, Weon-Mo Sung
  • Patent number: 7432869
    Abstract: A wireless communication device and method for identifying a container, or communication information about a container using a slot in the container as an antenna. The device includes a wireless communication device for transmitting information regarding the container. The container includes an outer wall forming rim and a slot between the rim edge and the outer wall that is circular and continues without boundaries. The wireless communication device is coupled to the slot to provide the slot antenna for communications. An impedance matching network is additionally provided to make the operating frequency of the slot substantially the same as the operating frequency of the wireless communication device. Alternatively, shorting posts may be placed in the slot to define boundaries of the slot to match the operating frequency of the slot to the operating frequency of the antenna. Multiple feed points may be provided between the wireless communication device and the slot.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: October 7, 2008
    Assignee: Mineral Lassen LLC
    Inventors: Ian J. Forster, Peter Robert George Horrell
  • Patent number: 7239283
    Abstract: There is disclosed an antenna having a tapered radiating element possessing a slow-wave structure along a tapered radiating edge thereof. The radiating element is combined with a ground plane conductor to form a monopole antenna. The slow-wave structure supports an increased antenna operating bandwidth and reduced aperture clutter by being shaped to increase the radiative rate of loss of energy from signals propagating along the slow-wave structure. A log-periodic distribution in the shaping of serrations within the slow-wave structure provides substantially frequency-independent performance across the bandwidth.
    Type: Grant
    Filed: September 20, 2004
    Date of Patent: July 3, 2007
    Assignee: Thales PLC
    Inventor: Lye-Whatt Chua
  • Patent number: 7198198
    Abstract: An antenna device (60) is provided that is used in a recorder and/or writer destined for writing and reading data to and from a contactless IC card (1). The antenna device (60) includes a loop coil (61) that radiates a magnetic field, magnetically couples with a loop coil (4) provided in the IC card (1), and sends and receives data to and from the IC card (1). The loop coil (61) is formed asymmetric for the winding sections thereof opposite to each other across the center of the loop coil (61) to be different in interval from each other.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: April 3, 2007
    Assignee: Sony Corporation
    Inventors: Hiraku Akiho, Yutaka Okazaki, Akihiro Kikuchi, Kazuo Goto, Kazuhiko Urayama
  • Patent number: 7145516
    Abstract: Disclosed is a wireless internal antenna for a home network and digital electric home appliance which comprises: a wireless antenna for a client having a tuning slot at an upper surface of a client device to realize an impedance matching at a band of IEEE802.11b (a band of 2.4 GHz) and having a certain type patch pole at a lower surface of the client device to have return characteristics at a band of IEEE802.11a (a band of 5 GHz); and a wireless antenna for a server, enabling transmission/reception to/from the client device, having an air slot at an upper surface of a server device and a feeding line at a lower surface thereof, and the server device is supported at a ground plate by a supporting portion installed at a lower part thereof.
    Type: Grant
    Filed: November 23, 2004
    Date of Patent: December 5, 2006
    Assignee: LG Electronics Inc.
    Inventors: Young-Joon Ko, Jae-Yeong Park
  • Patent number: 7129839
    Abstract: The present invention relates to a monitoring device (1) with a transmitter unit (2) and a receiver unit (3) for monitoring an area. Slotted cables serve as antennas. According to the invention, a first slotted cable is arranged as a transmitting an antenna (4) for transmitting a pulsed high-frequency signal and a second slotted cable is arranged as a receiving antenna (9) for receiving the reflected signal. The slotted cables are arranged in association with each other and essentially parallel to each other, and the transmitter unit (2) is connected to the first slotted cable at one end of the antenna arrangement and the receiver unit (3) is connected to the second slotted cable at the other end of the antenna arrangement.
    Type: Grant
    Filed: June 17, 2005
    Date of Patent: October 31, 2006
    Assignee: SAAB AB
    Inventors: Roine Andersson, Olof Eriksson
  • Patent number: RE40972
    Abstract: A wireless communication device and method for identifying a container, or communication information about a container, using a slot in the container as an antenna. The device includes a wireless communication device for transmitting information regarding the container. The container includes an outer wall forming a rim and a slot between the rim edge and the outer wall that is circular and continues without boundaries. The wireless communication device is coupled to the slot to provide the slot antenna for communications. An impedance matching network is additionally provided to make the operating frequency of the slot substantially the same as the operating frequency of the wireless communication device. Alternatively, shorting posts may be placed in the slot to define boundaries of the slot to match the operating frequency of the slot to the operating frequency of the antenna. Variable impedance matching is provided between the wireless communication device and the slot.
    Type: Grant
    Filed: November 4, 2005
    Date of Patent: November 17, 2009
    Inventors: Ian J. Forster, Peter Robert George Horrell