Plural Path With Impedance Matching Patents (Class 343/852)
  • Patent number: 10374306
    Abstract: A MIMO antenna is disclosed, including: a first antenna, a second antenna, and an adjustable decoupling structure. The adjustable decoupling structure is disposed between the first antenna and the second antenna, and is configured to reduce coupling between the first antenna and the second antenna. The adjustable decoupling structure includes a first adjustable capacitor and a second adjustable capacitor that are connected in series and a first adjustable inductor and a second adjustable inductor that are connected in parallel.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: August 6, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Ming Zhang, Bin Wang
  • Patent number: 10340877
    Abstract: An antenna device includes an impedance converter circuit connected to a feeder circuit, an impedance-conversion-ratio adjustment circuit, and an antenna. The impedance converter circuit includes a first inductance element and a second inductance element, which are coupled to each other through magnetic fields, so as to provide an autotransformer circuit. The impedance-conversion-ratio adjustment circuit includes a third inductance element which is series-connected between the impedance converter circuit and an antenna port, and a capacitance element which is shunt-connected between the antenna port and ground. The impedance-conversion-ratio adjustment circuit corrects an impedance conversion ratio of the impedance converter circuit in accordance with a frequency band.
    Type: Grant
    Filed: July 3, 2017
    Date of Patent: July 2, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Kenichi Ishizuka
  • Patent number: 10199702
    Abstract: A phase shifter includes a cavity (100) and a first fixed transmission line (301), a second fixed transmission line (302), and a slidable transmission line (201) that are located in the cavity (100). The first fixed transmission line (301) is provided with a first open slot (3011), the second fixed transmission line (302) is provided with a second open slot (3021), and opening directions of the first open slot (3011) and the second open slot (3021) are opposite to each other. Two ends of the slidable transmission line (201) are respectively clamped in the first open slot (3011) and the second open slot (3021), so that the slidable transmission line (201) is electrically connected to the first fixed transmission line (301) and the second fixed transmission line (302). The slidable transmission line (201) slides relative to the first fixed transmission line (301) and the second fixed transmission line (302).
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: February 5, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Zhiqiang Liao, Lei Chen, Huifan Lin, Xinneng Luo
  • Patent number: 10141656
    Abstract: A structural antenna array may include a core including intersecting wall sections, wherein the core further includes antenna elements formed on a first surface of the wall sections, and feed elements formed on a second surface of the wall sections, a distribution substrate layer coupled to the core and in electrical communication with the antenna elements and the feed elements, a first skin coupled to the core opposite the distribution substrate layer, and a second skin coupled to the distribution substrate layer opposite the first skin.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: November 27, 2018
    Assignee: The Boeing Company
    Inventors: Manny S. Urcia, Matthew A. Stoneback, Tiffany M. Radford, Mark T. Chisa, Mark A. Thompson, Benjamin D. Smith, Charles W. Manry, Jr.
  • Patent number: 10027029
    Abstract: A matching circuit for an antenna of whatever type, includes a ground circuit and a feed circuit. The ground circuit connects a ground terminal of the antenna to a ground voltage, and provides an inductive impedance between the ground terminal and the ground voltage. The feed circuit connects a feed signal to a feed terminal of the antenna. The feed circuit is capable of switching between a first mode and a second mode for respectively providing a first equivalent impedance and a second equivalent impedance between the feed signal and the feed terminal. An associated method is also disclosed.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: July 17, 2018
    Assignee: MEDIATEK INC.
    Inventor: Chung-Yu Hung
  • Patent number: 9979352
    Abstract: A circuit including a power amplifier having a control terminal configured to control an output level of the power amplifier, a bias circuit in communication with the control terminal, the bias circuit including a tunable plurality of diodes in series configured to supply a bias voltage to the control terminal, and a control circuit in communication with the bias circuit configured to tune the plurality of diodes in series to create the bias voltage in response to a supply voltage of the amplifier.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: May 22, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Joonhoi Hur, Paul Draxler
  • Patent number: 9917626
    Abstract: A base station apparatus of mobile communication system is provided, including an antenna system including first antenna for transceiving signals for a first path among MIMO paths, and a second antenna for transceiving signals for a second path among the MIMO paths, a first duplexer including transmission filter for processing the transmitted signal of first path and reception filter for processing the received signal of second path, a second duplexer including reception filter for processing the received signal of first path and transmission filter for processing the transmitted signal of second path, and a path change unit for providing the transmitted signal provided from the first duplexer to the first antenna and the received signal provided from the first antenna to the second duplexer and to provide the transmitted signal from the second duplexer to the second antenna and the received signal from the second antenna to the first duplexer.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: March 13, 2018
    Assignee: KMW INC.
    Inventors: Young-Chan Moon, Nam-Shin Park, Chang-Seob Choi, In-Ho Na
  • Patent number: 9865922
    Abstract: Antenna tuning circuitry includes an antenna tuning node, an antenna tuning switch, and a resonant tuning circuit. The antenna tuning node is coupled to a resonant conduction element of an antenna. The antenna tuning switch and the resonant tuning circuit are coupled in series between the antenna tuning switch and the antenna tuning node, such that the resonant tuning circuit is between the antenna tuning node and the antenna tuning switch. The resonant tuning circuit is configured to resonate at one or more harmonic frequencies generated by the antenna tuning switch such that a high impedance path is formed between the antenna tuning switch and the antenna tuning node at harmonic frequencies generated by the antenna tuning switch. Accordingly, harmonic interference generated by the antenna tuning switch is prevented from reaching the antenna, while simultaneously allowing for tuning of the antenna.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: January 9, 2018
    Assignee: Qorvo US, Inc.
    Inventors: Daniel Charles Kerr, Christian Rye Iversen, Eric K. Bolton, Ruediger Bauder, Nadim Khlat
  • Patent number: 9455499
    Abstract: A communication device including a ground element and an antenna element is provided. The antenna element includes a metal element. The metal element is disposed at or adjacent to an edge of the ground element. The metal element is substantially perpendicular to the ground element. The metal element has a projection on the ground element, and the whole projection is in the internal of the ground element. The antenna element has a first feeding point and a second feeding point. The first and second feeding points are away from each other. The first and second feeding points are substantially positioned at two ends of the metal element, respectively. The first feeding point is coupled through a first switch and a first matching circuit to a communication module. The second feeding point is coupled through a second switch and a second matching circuit to the communication module.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: September 27, 2016
    Assignee: ACER INCORPORATED
    Inventors: Kin-Lu Wong, Meng-Ting Chen
  • Patent number: 9407014
    Abstract: In an antenna device, power is fed from a first port to a first radiation element, and power is fed from a second port to a second radiation element. A decoupling circuit connects the first radiation element and the second radiation element, and includes a bridge element connecting a first point between the first port and the first radiation element and a second point between the second port and the second radiation element to each other. A first reactance element is provided in series with the first radiation element between the first point and the first radiation element, and a second reactance element is provided in series with the second radiation element between the second point and the second radiation element. At least one of the first reactance element and the second reactance element is configured so as to be capable of changing the value of reactance.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: August 2, 2016
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Hiroya Tanaka
  • Publication number: 20150145744
    Abstract: A tunable antenna including a first radiating element, a second radiating element, a connection circuit and a switch circuit is provided. The first radiating element includes a coupling portion and a first feeding portion. The second radiating element includes a second feeding portion, a grounding portion and a radiation portion. The grounding portion is electrically connected to a ground plane, and the radiation portion surrounds the coupling portion to form a first coupling gap and the second coupling gap. The connection circuit is electrically connected to the radiation portion and a state of the connection circuit is changed according to a control signal, so as to adjust a length of the resonant path of the radiation portion. A feeding signal is transmitted to the first feeding portion or the second feeding portion by the switch circuit.
    Type: Application
    Filed: November 20, 2014
    Publication date: May 28, 2015
    Applicant: ASUSTeK COMPUTER INC.
    Inventors: Yeh-Chun Kao, You-Fu Cheng, Yu-Chia Chang
  • Publication number: 20150130680
    Abstract: A duplexer includes an antenna terminal, a transmission amplifier terminal and a reception amplifier terminal. The transmission amplifier terminal is coupled to the antenna terminal via a transmission filter. The reception amplifier terminal is coupled to a reception filter and the reception filter is coupled to the antenna terminal via a band-stop filter.
    Type: Application
    Filed: August 22, 2014
    Publication date: May 14, 2015
    Inventors: Andreas Link, Bernhard Bader
  • Publication number: 20150122886
    Abstract: An RFID reader is provided that includes an antenna array comprising multiple antenna elements circumferentially distributed around a longitudinal axis of the antenna array. Each antenna element includes multiple patch elements disposed above one or more underlying substrates, wherein the patch elements of each antenna element are disposed on an outer side of the antenna element. Further, one or more of the antenna elements is an asymmetric antenna element, wherein a first end of the asymmetric antenna element is wider than a second, opposite end of the asymmetric antenna element, wherein a first patch element disposed proximate to the first end of the asymmetric antenna element is larger than a second patch element disposed proximate to the second end of the asymmetric antenna element, and wherein a resonant frequency associated with the first patch element is approximately the same as a resonant frequency associated with the second patch element.
    Type: Application
    Filed: November 5, 2013
    Publication date: May 7, 2015
    Applicant: SYMBOL TECHNOLOGIES, INC.
    Inventor: Michael J. KOCH
  • Publication number: 20150116180
    Abstract: The present invention relates to a phase-shifting unit module, a manufacturing method therefor, a phase shifting device, and an antenna. The phase-shifting unit module comprises a first metal ground plate, a second metal ground plate, an insulating dielectric plate, a slide apparatus, and a fixed transmission line. The insulating dielectric plate is provided thereon with at least one impedance transforming part. The thickness of the impedance transforming part is less than the thickness of the remaining parts of the insulating dielectric plate. The impedance transforming part of the insulating dielectric plate is overlapped with the fixed transmission line during a moving process. The insulating dielectric plate is overlapped only with the fixed transmission line, thus reducing reflected signals, while at the same time reducing losses, and facilitating ultra-wideband design of the phase-shift unit module and of the phase-shifting device.
    Type: Application
    Filed: November 4, 2013
    Publication date: April 30, 2015
    Applicant: GUANGDONG BROADRADIO COMMUNICATION TECHNOLOGY CO., LTD.
    Inventor: Biqun Wu
  • Patent number: 8996080
    Abstract: A radio-frequency (RF) device for a wireless communication device includes a grounding element, an antenna, a first DC blocking element for cutting off a direct-current (dc) signal route between a grounding terminal of the antenna and the grounding element, a capacitive sensing unit capable of using a radiating element of the antenna to sense an environment capacitance within a specific range, a second DC blocking element electrically connected between the radiating element and the feed-in element for blocking a dc signal path from the radiating element to the feed-in element, and a high-frequency blocking element electrically connected between the radiating element and the capacitive sensing unit for blocking a high-frequency signal path from the radiating element to the capacitive sensing unit.
    Type: Grant
    Filed: August 12, 2013
    Date of Patent: March 31, 2015
    Assignee: Wistron NeWeb Corporation
    Inventors: Shang-Sian You, Kuan-Hsueh Tseng
  • Patent number: 8982007
    Abstract: A transfer unit for transferring a radio frequency signal between a classical antenna tuner and an antenna where the transfer unit comprises a switch for alternatively selecting a first direct route for the radio frequency signal between the tuner and the antenna or a second route via a reactive element; said reactive element comprising a variable serial capacitance and a shunt inductance connected to system earth; and where a control unit controls the switch and is adapted to select the first route when the frequency is above a predetermined value and otherwise select the second route. The variable serial capacitance comprises a set of capacitors organized as a set of binary weighted parallel capacitance values, and the transfer unit further comprises switches to engage or disengage each capacitor from the reactive element to increase or decrease the resulting capacitance as the radio frequency is decreased or increased.
    Type: Grant
    Filed: May 4, 2009
    Date of Patent: March 17, 2015
    Assignee: Comrod AS
    Inventor: Ronald Davidson
  • Publication number: 20150048992
    Abstract: An antenna system including a signal source, at least one antenna coupled to the signal source, a matching circuit connected to the signal source at a first port and to the at least one antenna at a second port and operative to match the at least one antenna to the signal source, the matching circuit having a characteristic impedance with respect to the first port and the second port, real and imaginary parts of the characteristic impedance not being defined by the Hilbert transform.
    Type: Application
    Filed: March 19, 2013
    Publication date: February 19, 2015
    Inventor: Matti Martiskainen
  • Publication number: 20150048991
    Abstract: A multi-feed antenna in provided, including multiple feed elements associated with multiple frequency regions, respectively, and a folded loop element for radiating energy. Each of the multiple feed elements is capacitively coupled to the folded loop element.
    Type: Application
    Filed: December 31, 2013
    Publication date: February 19, 2015
    Applicant: Ethertronics, Inc.
    Inventors: Olivier Pajona, Laurent Desclos, Seng Thail
  • Patent number: 8957827
    Abstract: Off-feed matching circuits for antenna structures of user devices and methods of operating the user devices with the off-feed matching circuits are described. Off-feed matching circuits are matching circuits that are positioned on the radiating elements and not on the feed line. One apparatus includes a RF feed coupled to an excitation antenna element of an antenna structure. The antenna structure also includes two radiating antenna elements and two matching circuits, one for each of the radiating antenna elements. The two radiating antenna elements may be conductively coupled to the excitation antenna element or parasitically coupled to the excitation element.
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: February 17, 2015
    Assignee: Amazon Technologies, Inc.
    Inventors: Tzung-I Lee, In Chul Hyun
  • Patent number: 8952792
    Abstract: A tuning circuit in an RFID tag may be used to match antenna and integrated circuit (IC) impedances to maximize the efficiency of IC power extraction from an incident RF wave. The tuning circuit, which requires less power to operate than the IC, adjusts a variable impedance to improve the impedance matching between the IC and the tag antenna and thereby increase the IC power extraction efficiency. The IC may begin operating according to a protocol when it extracts sufficient power from the RF wave or when an optimal impedance matching and power transfer is achieved.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: February 10, 2015
    Assignee: Impinj, Inc.
    Inventors: Shailendra Srinivas, Jay Kuhn, Ronald A. Oliver, John D. Hyde, Christopher J. Diorio
  • Publication number: 20150029072
    Abstract: A power divider for transmitting signals of an input terminal to a plurality of output terminals includes a rectangular microstrip line coupled to the input terminal, and a plurality of coupling units conducting the rectangular microstrip line and the plurality of output terminals by electromagnetic coupling, wherein each of the plurality of coupling units and the rectangular microstrip line are separated by a first gap, and each coupling unit includes at least one dual-L resonator disposed between the microstrip line and an output terminal, wherein the first gap and a second gap of each dual-L resonator are related to a power ratio between the input terminal and the plurality of output terminals.
    Type: Application
    Filed: October 16, 2013
    Publication date: January 29, 2015
    Applicant: Wistron NeWeb Corporation
    Inventors: Guo-Shu Huang, I-Shan Chen
  • Patent number: 8942658
    Abstract: A directional notch filter for simultaneous transmit and receive of wideband signals comprises an antenna, an antenna match, a receiver, a power combiner, a first directional coupler, a second directional coupler and a shaping filter accepting a signal and producing a compensation signal as a replica of an antenna reflection transfer function, wherein the first and second directional couplers produce signals and portions of signals received by the antenna and sent to the receiver via the power combiner. The receiver can produce a receiver signal and the first directional coupler can produce a first signal as a portion of an overall signal received by the antenna, the first signal comprising at least reflection of a signal from the power amplifier and the second directional coupler samples a small portion of the receiver signal, said second directional coupler producing a second signal.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: January 27, 2015
    Assignee: Telcordia Technologies, Inc.
    Inventors: Thomas Banwell, Ted Woodward, Joseph C Liberti
  • Publication number: 20150022419
    Abstract: An antenna device includes an antenna and a matching circuit. The antenna includes a first radiating body and a second radiating body. The matching circuit includes a first matching path connected to the first radiating body and a second matching path connected to the second radiating body. The first radiating body and the second radiating body correspondingly operate at a first frequency band and a second frequency band by adjusting impedances of the first matching path and the second matching path.
    Type: Application
    Filed: September 27, 2013
    Publication date: January 22, 2015
    Applicant: CHIUN MAI COMMUNICATION SYSTEMS, INC.
    Inventors: TZE-HSUAN CHANG, CHO-KANG HSU
  • Publication number: 20140375521
    Abstract: A wireless device includes at least one radiating system having a redundancy system and a combining system. The redundancy system includes two or more radiation boosters. The radiating system is characterized by its simplicity that facilitates its integration within the wireless device and achieves enhanced radio-electric performance in at least one frequency region of the electromagnetic spectrum, which may include multiple wireless services. The combining system enables a substantially balanced power distribution among the radiation boosters of the redundancy system, and the radiating system provides an increased robustness to human loading effects in at least one frequency region of operation.
    Type: Application
    Filed: June 18, 2014
    Publication date: December 25, 2014
    Inventors: Aurora Andujar Linares, Jaume Anguera Pros
  • Patent number: 8912972
    Abstract: A dielectric body includes a first radiating element on a first side and a second radiating element on a second side. The first radiating element and the second radiating element are linear conductors that each extend from a first end to a second end (an open end), and are parallel or substantially parallel to each other in a direction from the first end to the second end. The first end of the first radiating element is connected to a first port of a coupling degree adjustment circuit, and the first end of the second radiating element is connected to a second port of the coupling degree adjustment circuit. The first radiating element and the second radiating element are mainly coupled to each other in the coupling degree adjustment circuit.
    Type: Grant
    Filed: November 5, 2013
    Date of Patent: December 16, 2014
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Noriyuki Ueki, Noboru Kato, Kenichi Ishizuka, Hiroshi Nishida
  • Publication number: 20140340276
    Abstract: The present invention refers to an antenna less wireless handheld or portable device comprising a communication module including a radiating system capable of transmitting and receiving electromagnetic wave signals in a first frequency region and in a second frequency region, wherein the highest frequency of the first frequency region is lower than the lowest frequency of the second frequency region. The radiating system comprising a radiating structure and at least one internal port, wherein the input impedance of the radiating structure at the/each internal port when disconnected from the radiofrequency system has an imaginary part not equal to zero for any frequency of the first frequency region; and wherein said radiofrequency system modifies the impedance of the radiating structure, providing impedance matching to the radiating system in the at least two frequency regions of operation of the radiating system.
    Type: Application
    Filed: April 21, 2014
    Publication date: November 20, 2014
    Applicant: Fractus, S.A.
    Inventors: Jaume Anguera Pros, Aurora Andujar Linares, Carles Puente Baliarda, Josep Mumbru
  • Publication number: 20140327587
    Abstract: A multi band antenna device which can simultaneously design a first frequency band antenna and a second frequency band antenna within one wireless communication device is provided. The multi band antenna device includes a first band antenna unit that communicates a first frequency band signal, a first band driving circuit unit that is connected to the first band antenna unit and that is configured to perform signal processing of a corresponding first frequency band signal communicated in the first band antenna unit, a second band driving circuit unit that is connected to the first band antenna unit, and that is configured to perform signal processing of a second frequency band signal which has a frequency that is lower than a frequency of the first frequency band signal, and a first inductor unit that is connected between one end of the first band antenna unit and the second band driving circuit unit, and that is configured to serve as an inductor.
    Type: Application
    Filed: April 29, 2014
    Publication date: November 6, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Youn-Su WON
  • Publication number: 20140313099
    Abstract: An antenna-like matching component is provided, comprising one or more conductive portions formed on a substrate. Shapes and dimensions of the one or more conductive portions are determined to provide impedance matching for one or more antennas coupled to the matching component.
    Type: Application
    Filed: March 14, 2014
    Publication date: October 23, 2014
    Applicant: ETHERTRONICS, INC.
    Inventors: Olivier Pajona, Sebastian Rowson, Laurent Desclos
  • Patent number: 8861646
    Abstract: A wireless communication terminal according to the embodiment includes a communication module including a circuit board having a plurality of pins; a shield case antenna overlapping with one side of the circuit board, electrically connected to a part of the pins and including a signal receiving unit; and a signal processing unit for processing the received signals. An antenna matching unit for matching impedance between the signal processing unit and an antenna unit, a phase shifter for controlling a phase of the received signal and an amplitude regulator for adjusting amplitude of the received signal are provided between the signal processing unit and the antenna unit.
    Type: Grant
    Filed: October 9, 2012
    Date of Patent: October 14, 2014
    Assignee: LG Innotek Co., Ltd.
    Inventors: Jong Guk Kim, Ja Kwon Ku, Kyung Suk Kim, Seung Taek Woo, Jong Chang Lee, Jeong Hoon Cho
  • Publication number: 20140292607
    Abstract: An antenna device is provided. The antenna device comprises a first radiation portion and a second radiation portion. The first radiation portion includes a first end and a second end. The second radiation portion is connected to the first end at a connecting part and includes a first arm and a second arm. The first arm and the second arm have different lengths and extend from the connecting part.
    Type: Application
    Filed: July 23, 2013
    Publication date: October 2, 2014
    Applicant: Arcadyan Technology Corporation
    Inventor: Jin Su CHANG
  • Publication number: 20140266962
    Abstract: An N-way radio frequency (RF) divider/combiner is formed as a combination including an input port electrically coupled to a first 2-way divider/combiner and a second 2-way divider/combiner. An antenna may be coupled to at least one port of the N-way divider. The antenna may be formed as a compound printed loop (CPL) antenna. The N-way RF divider/combiner may be configured to provide N inputs and M output ports, wherein N and M are integers and any of the M output ports and N input ports can be connected to any combinations of devices. Such devices may include, e.g., an antenna including but not limited to a CPL antenna, RF receive port, transmit port, amplifier, RF switch, low noise amplifier (LNA), oscillator, tuning circuit, matching circuit, lumped element circuit, active circuit, diode, adjustable inductive circuit, and adjustable capacitive circuit.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicant: DockOn AG
    Inventors: Alexandre Dupuy, Forrest Brown, Patrick Rada
  • Publication number: 20140240191
    Abstract: An antenna is described including a slot formed in a cavity, a substrate configured to cover a portion of the cavity and the slot, and a first port and a second port configured to supply power to the antenna using a first feeding line and a second feeding line. Each of the feeding line and the second feeding line is connected to the slot in a vertical direction and disposed to be separate from one another. A first input impedance of the antenna from the first port differs from a second input impedance of the antenna from the second port.
    Type: Application
    Filed: February 21, 2014
    Publication date: August 28, 2014
    Applicants: SNU R&DB FOUNDATION, SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae Sup LEE, Seong Joong KIM, Seok Ju YUN, Sang Wook NAM, Su Min YUN
  • Patent number: 8811278
    Abstract: The present invention provides a high/low frequency dual wireless location detection and information transmission system which is high in reliability and maintainability, and can be easily installed. A leakage coaxial inner conductor and a conductor line provided in parallel are short-circuited at an end, a single leakage coaxial operation and a loop operation of the inner conductor and the conductor line are performed at the same time, the ID of a tag is communicated using magnetic fields which locally exist near the conductor line by the loop, and wireless position detection and information communications which are less affected by the influence of ambient environments due to electromagnetic waves in a closed area are realized by open-type lines.
    Type: Grant
    Filed: February 2, 2011
    Date of Patent: August 19, 2014
    Assignees: Hitachi, Ltd., Hitachi Metals, Ltd.
    Inventors: Ken Takei, Kazuo Tamura, Nobuaki Kitano, Seiichi Kashimura, Hiroyuki Hori, Yasuo Ishikawa
  • Publication number: 20140218259
    Abstract: An antenna for a radar detector according to the present invention comprises: a power supply unit; first and second branches branched from the power supply unit; a first band patch antenna connected to the first branch and having first band properties; a second band patch antenna connected to the second branch and having second band properties; a second band stub placed between the power supply unit and the first band patch antenna on the first branch; and a first band stub placed between the power supply unit and the second band patch antenna on the second branch. The antenna for the radar detector according to the present invention may match one power supply unit without damaging the properties of a plurality of antennas that have different frequency properties.
    Type: Application
    Filed: November 25, 2011
    Publication date: August 7, 2014
    Applicants: BG T&A CO.
    Inventors: Jeong Hae Lee, Min Woo Park
  • Publication number: 20140203980
    Abstract: Techniques for utilization of antenna loading for impedance matching are described. In at least some embodiments, a device (e.g., a smart phone) includes multiple antennas that are employed to send and receive wireless signals for the device. The device further includes impedance matching functionality communicatively connected to the antennas, and configured to perform impedance matching for one of the antennas based on loading (e.g., dielectric loading) of another of the antennas.
    Type: Application
    Filed: January 18, 2013
    Publication date: July 24, 2014
    Applicant: MICROSOFT CORPORATION
    Inventors: Alireza Mahanfar, Javier Rodriguez De Luis, Stanley Yu Tao Ng, Benjamin J. Shewan, Kim Willi Schulze
  • Publication number: 20140198009
    Abstract: A low-frequency radiating element and a high-frequency radiating element are configured so as to respectively operate in a relatively low frequency band and a relatively high frequency band that are non-contiguous with each other. A matching circuit is inserted between a transmission/reception circuit and a branching point. A high-frequency variable reactance circuit is inserted between the branching point and the high-frequency radiating element. A low-frequency variable reactance circuit is inserted between the branching point and the low-frequency radiating element. The high-frequency variable reactance circuit and the low-frequency variable reactance circuit are configured such that their reactances can be adjusted independently of each other.
    Type: Application
    Filed: January 8, 2014
    Publication date: July 17, 2014
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Shoji NAGUMO, Minoru IWANAGA, Masahi NAKAZATO, Tomohiro NAGAI
  • Patent number: 8767871
    Abstract: An antenna tuner is placed between a Power Amplifier (PA) and an antenna. The antenna tuner includes programmable components that can be tuned in order to effect an impedance translation between the antenna and the PA output. In an embodiment, the antenna tuner is adapted dynamically based on changes in the impedance of the antenna. In another embodiment, the antenna tuner is controlled based on measurement of the voltage reflection coefficient S11.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: July 1, 2014
    Assignee: Broadcom Corporation
    Inventors: Bongseok Park, William Fujimoto, Sriraman Dakshinamurthy, Robert Lorenz
  • Publication number: 20140176386
    Abstract: An antenna comprises notched semi-elliptical radiators. Each of the radiators has a first substantially planar surface. A ground plane has a second substantially planar surface that is generally parallel to the first substantially planar surfaces of the radiators by a generally uniform spacing. The ground plane has a central axis. Feeding members are adapted for conveying an electromagnetic signal to or from each radiator. Each of the feeding members is spaced radially outward from the central axis of the ground plane. A grounded member is coupled to each radiator and spaced apart, radially outward from the feeding spacer.
    Type: Application
    Filed: April 1, 2013
    Publication date: June 26, 2014
    Applicant: Deere & Company
    Inventor: Mark L. Rentz
  • Publication number: 20140159986
    Abstract: Multiband antenna decoupling networks and systems including multiband antenna decoupling networks are provided herein. A multiband decoupling network is connected to two or more closely spaced antennas. The multiband decoupling network includes lumped components and is reconfigurable to decouple the two or more antennas at a plurality of distinct communication frequency bands. The multiband decoupling network may include tunable lumped components and be reconfigurable through tuning the tunable lumped components. A pi network may be used for the multiband decoupling network. At least one separate impedance-matching network may also be used to match the input impedance of the multiband decoupling network to the output impedance of transmission lines leading to the multiband decoupling network.
    Type: Application
    Filed: December 6, 2012
    Publication date: June 12, 2014
    Applicant: MICROSOFT CORPORATION
    Inventors: Javier R. De Luis, Alireza Mahanfar, Benjamin Shewan, Stanley Ng
  • Publication number: 20140159982
    Abstract: A reconfigurable monopole antenna is described which includes a radiator element coupled to a feed point through at least two different current paths. The current paths are of different lengths to accommodate different frequency bands. To change the current paths, a feed-point switch is positioned at the antenna feed point for selectively supplying current along either a first current path or a second current path. The current paths share a majority of the radiator element so that separate radiator elements need not be used.
    Type: Application
    Filed: December 6, 2012
    Publication date: June 12, 2014
    Applicant: MICROSOFT CORPORATION
    Inventors: Javier Rodriguez De Luis, Alireza Mahanfar, Benjamin Shewan
  • Publication number: 20140152522
    Abstract: An apparatus including a first port configured to couple to a first location on an antenna; a second port configured to couple to a second location on the antenna; a switch configured to switch between a first electrical configuration in which the first port is coupled to radio circuitry, and a second electrical configuration in which the second port is coupled to the radio circuitry; first reactive circuitry configured to impedance match the antenna with the radio circuitry at a first operational resonant frequency band; and second reactive circuitry, different to the first reactive circuitry, and configured to impedance match the antenna with the radio circuitry at a second operational resonant frequency band, different to the first operational resonant frequency band.
    Type: Application
    Filed: July 6, 2011
    Publication date: June 5, 2014
    Applicant: Nokia Corporation
    Inventors: Jouni Vesa Juhani Karkinen, Marko Tapio Autti
  • Patent number: 8718578
    Abstract: A circuit arrangement includes a component having a closed signal path, that closed signal path connected to a first port, a second port and at least a third port. The component has a directed signal flow of a signal applied to one of that ports. Such a coupling device can be connected to a transmitter and to a receiver path, respectively.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: May 6, 2014
    Assignee: Intel Mobile Communications GmbH
    Inventors: Bernd Adler, Zdravko Boos
  • Publication number: 20140118214
    Abstract: In an antenna device, power is fed from a first port to a first radiation element, and power is fed from a second port to a second radiation element. A decoupling circuit connects the first radiation element and the second radiation element, and includes a bridge element connecting a first point between the first port and the first radiation element and a second point between the second port and the second radiation element to each other. A first reactance element is provided in series with the first radiation element between the first point and the first radiation element, and a second reactance element is provided in series with the second radiation element between the second point and the second radiation element. At least one of the first reactance element and the second reactance element is configured so as to be capable of changing the value of reactance.
    Type: Application
    Filed: October 31, 2013
    Publication date: May 1, 2014
    Applicant: Murata Manufacturing Co., Ltd.
    Inventor: Hiroya TANAKA
  • Patent number: 8665152
    Abstract: An antenna assembly for receiving the GPS signals in a global positioning system (GPS) receiver module automatically orients the antenna to better receive the GPS signals. The antenna is oriented by a positioner (e.g., a counterweight) that automatically rotates a frame on which the antenna is mounted. The GPS receiver module may also include multiple antennas oriented in different directions to maintain good reception of the GPS signals in any position. The multiple antennas are oriented in a manner so that the poor reception range an antenna is covered by other antennas. Signals from multiple antennas may be combined or chosen for processing by a GPS processor. Also, multiple GPS receiver modules may be deployed in close proximity so that wireless communication between the GPS receiver modules may be established.
    Type: Grant
    Filed: May 14, 2010
    Date of Patent: March 4, 2014
    Assignee: Moog Inc.
    Inventors: Ralph M. Kling, Darren S. Liccardo, Michael J. Grimmer
  • Publication number: 20140049439
    Abstract: A compact antenna element and assembly using a directly fed and electromagnetically coupled step probe element for ultra wideband application. It achieves very good impedance match, isolation and pattern stability across a wide frequency band. The compact ultra wideband radiating element covers all known radio frequency bands in the mobile base station industry to date.
    Type: Application
    Filed: August 17, 2012
    Publication date: February 20, 2014
    Inventor: Jimmy HO
  • Publication number: 20140049440
    Abstract: A dielectric body includes a first radiating element on a first side and a second radiating element on a second side. The first radiating element and the second radiating element are linear conductors that each extend from a first end to a second end (an open end), and are parallel or substantially parallel to each other in a direction from the first end to the second end. The first end of the first radiating element is connected to a first port of a coupling degree adjustment circuit, and the first end of the second radiating element is connected to a second port of the coupling degree adjustment circuit. The first radiating element and the second radiating element are mainly coupled to each other in the coupling degree adjustment circuit.
    Type: Application
    Filed: November 5, 2013
    Publication date: February 20, 2014
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Noriyuki UEKI, Noboru KATO, Kenichi ISHIZUKA, Hiroshi NISHIDA
  • Patent number: 8633761
    Abstract: Disclosed herein is a power amplifier insensitive to load impedance changes. According to the present invention, the power amplifier comprises a power amplification circuit which amplifies an input signal, an output matching circuit connected to an output terminal of the power amplification circuit to perform impedance matching between the power amplification circuit and an antenna load, and a 4-port coupler connected between the output matching circuit and the antenna load.
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: January 21, 2014
    Assignee: Gwangju Institute of Science and Technology
    Inventor: Jong Soo Lee
  • Patent number: 8629813
    Abstract: An adjustable multi-band planar antenna especially applicable in mobile terminals. In one embodiment, the feed of the antenna is connected by a multiple-way switch to at least two alternative points of the radiator element. When the feed point is changed, the resonance frequencies and thus the operating bands of the antenna change. In addition to varying the basic dimensions of the antenna, the distance between one feed point to another and a possible short-circuit point in the radiator, the value of the series capacitance produced by a reactive circuit that is formed between the feed point and switch, and the distance between the ground plane and the radiator, are parameters that may affect the antenna design.
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: January 14, 2014
    Assignee: Pusle Finland Oy
    Inventor: Zlatoljub Milosavljevic
  • Publication number: 20140009360
    Abstract: The present invention concerns a mobile communication device comprising a ground plane, a main antenna comprising a main radiator (MRAD) that can couple electromagnetically to the ground plane and to a first signal path (SPm), a diversity antenna comprising a diversity radiator (DRAD), a reconfigurable input matching circuit that couples the diversity radiator (DRAD) to the ground plane and to a second signal path (SPd), and a control unit (CU) coupled to the reconfigurable input matching circuit and adapted to change the coupling of the diversity radiator (DRAD) to the ground plane during operation. The present invention further concerns to a method to enhance the performance of the device.
    Type: Application
    Filed: November 25, 2010
    Publication date: January 9, 2014
    Applicant: EPCOS AG
    Inventors: Pekka Ikonen, Juha Ellä
  • Publication number: 20140002323
    Abstract: The present invention provides a method and apparatus to manipulate the mutual coupling and the correlation between the antennas (502, 504) on the handset (202) without the need to change the physical distance between them or to change their orientation. The manipulation in the mutual coupling and in the correlation is achieved using a circuit that is connected between the antennas' terminals (506, 508) and the terminals (510, 512) of the RF front end/power amplifier (514). This circuit can be fixed or tunable. The coupling control takes place between two transmitting antennas (502, 504) or two receiving antennas (502, 504).
    Type: Application
    Filed: May 31, 2011
    Publication date: January 2, 2014
    Applicant: BLACKBERRY LIMITED
    Inventors: Shirook M. Ali, James Paul Warden