For Providing Frequency Separation Patents (Class 333/129)
  • Patent number: 10720899
    Abstract: A radio-frequency module utilizing carrier aggregation includes a switch circuit that includes one input terminal and three or more output terminals and that simultaneously connects the input terminal and each of two or more output terminals selected from the output terminals, signal paths that propagate signals of corresponding frequency bands, band pass filters in the signal paths, and variable matching circuits in the signal paths. The circuit states of the variable matching circuits are changed in accordance with a combination of two or more signal paths simultaneously connected to the input terminal.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: July 21, 2020
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Morio Takeuchi
  • Patent number: 10567031
    Abstract: A filter module (20) includes a filter circuit (22) that includes switches (221SW and 224SW), a pass band of the filter circuit (22) being switched in accordance with switching between ON and OFF of the switches (221SW and 224SW); and an impedance matching circuit (21) that is disposed in at least one of a preceding stage and a subsequent stage of the filter circuit (22) and that includes a switch (212SW), an element value for achieving impedance matching being switched in the impedance matching circuit (21) in accordance with switching between ON and OFF of the switch (212SW). The switches (221SW and 224SW) and the switch (212SW) synchronize with each other regarding timing of switching between ON and OFF.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: February 18, 2020
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Koji Nosaka
  • Patent number: 10386456
    Abstract: Radio-frequencies (RF) antennas for use in micro-localization systems are described. The RF antennas described herein may enable localization of objects with high resolutions, such as in the order of one centimeter or less. The RF antennas may be further configured to reduce range error variability across different directions, so that the accuracy of a micro-localization system is substantially the same regardless of the position of the object. An illustrative RF antenna includes a conductive housing forming a first cavity separated from a second cavity by a conductive wall. The RF antenna may further include an emitting element coupled to the conductive housing, a port coupled to the conductive housing, and an antenna feed electrically coupling the emitting element to the port. The antenna feed may pass through the cavities and the conductive wall. The antenna feed may comprise a symmetric and an asymmetric portion, disposed in the different cavities.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: August 20, 2019
    Assignee: Humatics Corporation
    Inventors: Andrew Habib Zai, Gregory L. Charvat
  • Patent number: 10348266
    Abstract: An impedance conversion circuit includes an auto-transformer circuit including a first inductor connected between a first port connected on a power supply portion side and a second port connected on an antenna side and a second inductor connected between a third port that is grounded and the second port; a first phase shifter with a first end connected to the first port; an inductor connected in series between a second end of the first phase shifter and the power supply portion; and a capacitor connected in series to the inductor and connected in series between the second end of the first phase shifter and the power supply portion.
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: July 9, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Yuichiro Teshima, Kenichi Ishizuka
  • Patent number: 10333484
    Abstract: Aspects and examples reduce the insertion loss and the noise figure of a filter module, which is configured by capacitive elements such as surface acoustic wave resonators and impedance matched. In one example, the filter module includes a filter having a certain passband and a matching resonator for impedance matching of the filter, the passband of the filter being included in a frequency band ranging between a resonant frequency and an antiresonant frequency of the matching resonator, and a center frequency of the passband of the filter being lower than a center frequency of the band ranging between the resonant frequency and the antiresonant frequency of the matching resonator.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: June 25, 2019
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventor: Tomoya Komatsu
  • Patent number: 10263757
    Abstract: A filter circuit includes: a first transmission filter connected between a first antenna terminal and a first transmission terminal; a second transmission filter connected between the first antenna terminal and a second transmission terminal; a first reception filter connected between a second antenna terminal and a first reception terminal, the second antenna terminal being connected to an antenna different from an antenna to which the first antenna terminal is connected; and a second reception filter connected between the second antenna terminal and a second reception terminal.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: April 16, 2019
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Osamu Kawachi, Kensei Uehara
  • Patent number: 10250214
    Abstract: A filter includes two series arm resonators electrically connected in series between two input/output terminals, a parallel arm resonator electrically connected between a ground and a series arm between the two series arm resonators, an inductor electrically connected in parallel to the two series arm resonators, and a matching circuit electrically connected between one of the two series arm resonators and one of the input/output terminals, wherein the two series arm resonators and the parallel arm resonator define a pass band of a bandpass filter, the two series arm resonators and the inductor define an LC resonant circuit, respective anti-resonant frequencies of each of the two series arm resonators and a resonant frequency of the parallel arm resonator are located in a pass band of the LC resonant circuit, and a resonant frequency of the LC resonant circuit is lower than the resonant frequency of the parallel arm resonator.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: April 2, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Masanori Kato, Syunsuke Kido
  • Patent number: 10091606
    Abstract: Systems and methods of enrolling sensor devices with a control panel device using a mobile device are provided. Some methods can include detecting signals received from sensor devices, identifying a signal strength of each of the signals, displaying a list of each of the sensor devices and the signal strength of respective signals received from respective ones of the sensor devices, receiving user input to select at least one of the sensor devices, and transmitting an identifying signal to a control panel device to enroll the at least one sensor device with the control panel device for configuration thereof.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: October 2, 2018
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Uday Krishna P, Gopi Krishna Ratnakaram, Shanmuga Prabhu M, Samidurai Krishnamoorthy, Balamurugan Ganesan
  • Patent number: 10074898
    Abstract: The present disclosure can provide a wideband antenna with a folded monopole structure that operates at GPS frequencies and high band (HB) frequencies. Accordingly, the wideband antenna can function as an integrated GPS and HB Diversity antenna for a computing device. In some embodiments, due to various constraints, the antenna can be designed to have a curved structure to fit within a corner of the computing device. The folded monopole antenna can comprise two substantially parallel conducting arms, which improves antenna performance. In some embodiments, the present disclosure can provide GPS and high band impedance matching for a signal received from the antenna in order to improve/ensure signal quality. The signal can be decoupled into a GPS signal portion and a high band signal portion for additional processing and/or information retrieval.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: September 11, 2018
    Assignee: Amazon Technologies, Inc.
    Inventors: Jerry Weiming Kuo, Ulf Jan Ove Mattsson, Adrian Napoles
  • Patent number: 9973153
    Abstract: Disclosed are systems, devices, and methodologies to reduce harmonics in a radio frequency output signal. A power amplifier system comprises a power amplifier and a tunable output matching network electrically connected between the output of the power amplifier and an output of the tunable output matching network. The tunable output matching network reduces second-order harmonics in an amplified radio frequency signal when the power amplifier operates in a low frequency mode. The tunable output matching network includes traps such as a series inductor and a first capacitor in series with a first switch, a second capacitor in series with a second switch, and a third capacitor in series with a third switch, where the traps are tuned to selected harmonic frequencies when the power amplifier operates in the low frequency band of the operating band of frequencies.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: May 15, 2018
    Assignee: Skyworks Solutions, Inc.
    Inventor: Apostolos Samelis
  • Patent number: 9935798
    Abstract: An automatic impedance-matching method for a radiofrequency reception chain, which includes an antenna, an amplifier and a configurable impedance-matching network, arranged between the antenna and an input of the amplifier. The method includes two steps: acquiring measurement of a gain of the reception chain and of a noise level at an output of the amplifier and tuning the impedance-matching network according to the measurements. A radiofrequency reception chain allowing the method to be implemented is also provided.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: April 3, 2018
    Assignee: Commissariat a l'Energie Atomique at aux Energies Alternatives
    Inventors: Emeric De Foucauld, Thierry Taris
  • Patent number: 9716471
    Abstract: A quasi-switched, multi-band, high-power amplifier includes an input matching network, a low band path, a high band path, and an output matching network. The input matching network includes a single input port that is configured to receive an input signal. The input signal includes at least one tone within a specified frequency band. The low band path is configured, when the specified frequency band is a low frequency band, to amplify the input signal to generate a low band amplified signal. The high band path is configured, when the specified frequency band is a high frequency band, to amplify the input signal to generate a high band amplified signal. The output matching network includes a single output port and is configured to filter at least one of the low band amplified signal and the high band amplified signal into a load through the single output port.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: July 25, 2017
    Assignee: Raytheon Company
    Inventors: Anthony M. Petrucelli, Mark A. Talcott, Samuel D. Tonomura, Cynthia Y. Hang, John Fraschilla
  • Patent number: 9673528
    Abstract: A reconfigurable antenna comprises two or more mutually coupled radiating elements and two or more impedance-matching circuits configured for independent tuning of the frequency band of each radiating element. In addition, each radiating element is arranged for selective operation in each of the following states: a driven state, a floating state and a ground state.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: June 6, 2017
    Assignee: SMART ANTENNA TECHNOLOGIES LTD
    Inventors: Peter Chun Teck Song, Peter Hall, James Robert Kelly
  • Patent number: 9537452
    Abstract: Disclosed are systems, devices, and methodologies to reduce harmonics in a radio frequency output signal. A power amplifier system comprises a power amplifier and a tunable output matching network electrically connected between the output of the power amplifier and an output of the tunable output matching network. The tunable output matching network reduces second-order harmonics in an amplified radio frequency signal when the power amplifier operates in a low frequency mode. The tunable output matching network includes traps such as a series inductor and a first capacitor in series with a first switch, a second capacitor in series with a second switch, and a third capacitor in series with a third switch, where the traps are tuned to selected harmonic frequencies when the power amplifier operates in the low frequency band of the operating band of frequencies.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: January 3, 2017
    Assignee: Skyworks Solutions, Inc.
    Inventor: Apostolos Samelis
  • Patent number: 9490917
    Abstract: Apparatus for and method of processing radio frequency signals, the method including: obtaining a signal indicative of a first frequency (e.g. by obtaining a sample of a transmitted signal), the first frequency being a frequency of the transmitted signal; and using the signal indicative of a first frequency, establishing a second frequency depending on the first frequency, the second frequency being a frequency to which to tune a filter for filtering a received signal. An antenna for receiving and/or transmitting a signal may be a co-site antenna with respect to at least one other antenna.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: November 8, 2016
    Assignee: BAE SYSTEMS PLC
    Inventors: Lawrence Cain, Simon Russell Radford
  • Patent number: 9460320
    Abstract: In a transceiver, on a top surface of a rectangular plate-shaped substrate, transmission radiating elements and receiving radiating elements are provided. The transmission radiating elements extend in the horizontal or lateral direction from the center of the substrate. The receiving radiating elements extend in the vertical or longitudinal direction from the center of the substrate. Inductors included in a matching feeding element are individually electromagnetically coupled to transmission-side feeding points that are inner end portions of the transmission radiating elements and receiving-side feeding points that are inner end portions of the receiving radiating elements. A transmission signal is transmitted with a wave polarized in the horizontal or lateral direction, and a signal having a vertical or longitudinal polarization direction is received.
    Type: Grant
    Filed: April 3, 2012
    Date of Patent: October 4, 2016
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Tsutomu Ieki, Ken Sakai, Noboru Kato, Koji Shiroki
  • Patent number: 9450791
    Abstract: In a detection circuit, inputs correspond to received indications of vector signaling code words received by a first integrated circuit from a second integrated circuit. With four inputs, the circuit compares a first pair to obtain a first difference result and compares a second pair, disjoint from the first pair, to obtain a second difference result. The first and second difference results are then summed to form an output function. A system might use a plurality of such detection circuits to arrive at an input word. The circuit can include amplification, equalization, and input selection with efficient code word detection. The vector signaling code can be a Hadamard matrix code encoding for three input bits. The circuit might also have frequency-dependent gain, a selection function that directs one of the summation function result or the first difference result to the output function, variable gain, and/or a slicer.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: September 20, 2016
    Assignee: KANDOUB LAB, S.A.
    Inventors: Roger Ulrich, Peter Hunt
  • Patent number: 9270302
    Abstract: Front end circuitry includes at least three antenna nodes, a first duplexer, a second duplexer, a first diplexer, transceiver circuitry, and front end switching circuitry. The transceiver circuitry is coupled to the first duplexer, the second duplexer, and the first diplexer. The front end switching circuitry is coupled between the antenna nodes, the first duplexer, the second duplexer, and the first diplexer and configured to selectively couple the first duplexer to a first one of the antenna nodes, selectively couple the second duplexer to a second one of the antenna nodes, and selectively couple the first diplexer to a third one of the antenna nodes.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: February 23, 2016
    Assignee: RF Micro Devices, Inc.
    Inventor: Nadim Khlat
  • Patent number: 9124310
    Abstract: Systems and methods are provided for a broadband, closed-loop RF transmitter for multi-band applications that employs a single RF path to service multiple bands of operation. Embodiments of the present disclosure implement a broadband impedance matching module, which avoids the need for several costly and complex narrow-band matching networks. In an embodiment, the broadband impedance matching module includes concentric, mutually-coupled inductors. By adding this broadband impedance matching functionality, delay is significantly reduced because a single path can be used to service multiple bands.
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: September 1, 2015
    Assignee: Broadcom Corporation
    Inventors: Mohamed A. Mostafa, Derek Shaeffer
  • Patent number: 9112320
    Abstract: Communications connectors include a plurality of input contacts that are arranged as differential pairs of input contacts, a plurality of first output contacts that are electrically connected to respective ones of the plurality of input contacts, and a first pair of second output contacts that are electrically connected by a pair of conductive paths to one of the differential pairs of input contacts. The first output contacts are configured to physically contact respective ones of a plurality of first contacts of a second communications connector. Moreover, each contact of the first pair of second output contacts is electrically in parallel to a respective one of the first output contacts when the communications connector is mated with the second communications connector.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: August 18, 2015
    Assignee: CommScope, Inc. of North Carolina
    Inventors: Amid Hashim, Carl Todd Herman, Scott L. Michaelis, Richard A. Schumacher, David L. Heckmann, Hongwei Liang, Wayne D. Larsen
  • Patent number: 9041485
    Abstract: An electronic component includes: a first circuit connected to a first common terminal for inputting/outputting a first signal set, a second common terminal for inputting/outputting a second signal set having a frequency higher than the first signal set, and a third common terminal for being connected to an antenna; and a second circuit connected in parallel to the first circuit between the first and second common terminals, wherein the first circuit includes a first filter transmitting the first signal set and reflecting the second signal set, and a second filter transmitting the second signal set and reflecting the first signal set, the third common terminal is located between the first and second filters, and the second circuit reflects a first transmission signal and a second transmission signal, transmits parts of the first and second transmission signals, and inverts phases of the parts of the first and second transmission signals.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: May 26, 2015
    Assignee: TAIYO YUDEN CO., LTD.
    Inventor: Tetsuo Saji
  • 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
  • Patent number: 9030271
    Abstract: A multiplexer includes a microstrip manifold, and a filter bank having at least two output filters. The multiplexer channelizes an input radio frequency (RF) band of electromagnetic energy into a set of output channels by way of the filter bank. The microstrip manifold has an input port that receives an input RF signal, and at least two output ports. The microstrip manifold distributes the input RF signal to each output port, each said output port being coupled to a respective one of the at least two output filters. The multiplexer may be an input multiplexer for a spacecraft communications payload system.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: May 12, 2015
    Assignee: Space Systems/Loral, LLC
    Inventors: Stephen C. Holme, Stephen D. Berry, Lawrence Alan Carastro
  • Patent number: 9030270
    Abstract: A cascaded diplexer to create a cascaded diplexer leg with selectable passbands has a cascaded diplexer circuit. The diplexer circuit has a plurality of first bandpass filters, each having a passband. The diplexer circuit has a second bandpass filter having a passband and two terminals, coupled in series with a first bandpass filter. First and second switches are coupled in series with the second bandpass filter and the first bandpass filter, the first and second switches being configured to selectably switch the second bandpass filter into the circuit. The passband of the second bandpass filter is chosen to limit the passband of the first bandpass filters, such that when the second bandpass filter is switched into the circuit, the passband of the diplexer leg is reduced. The passband of the second bandpass filter may be a subset of, or overlaps with, the passband of the first bandpass filter.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: May 12, 2015
    Assignee: Entropic Communications, Inc.
    Inventors: Yonghuang Zeng, Branislav Petrovic
  • Patent number: 9024704
    Abstract: This invention provides a novel electronically tunable active duplexer for wireless transceiver applications. It relates to an active duplexer with full-duplex operation, permitting simultaneous transmission and reception of signals at same or different frequencies. Instead of incorporating fixed or mechanically adjustable capacitors, and even instead of incorporating varactor diodes, it incorporates one or more capacitance tuning circuit in phase shifting networks enabling one to electronically tune, with ease and precision, the frequency at which isolation is desired, over a band in both transmit and receive modes of operations.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: May 5, 2015
    Assignee: Bradley University
    Inventors: Prasad Narasimha Shastry, Sureshbabu Sundaram, Balamurugan Sundaram
  • Patent number: 9019039
    Abstract: An RF bandpass filter includes a cascaded series of a first subfilter and a second subfilter. Each subfilter includes a respective inverter, voltage-controlled capacitor and inductor. A first selected one of the first subfilter and the second subfilter is a pseudo low pass filter and a second selected one of the first subfilter and the second subfilter is a pseudo high pass filter. The RF bandpass filter is configured to separately control a bandwidth and center frequency of output RF energy. The bandwidth may be controlled to be substantially fixed over a significant substantial range. The center frequency and bandwidth are controlled by adjusting a voltage input to one or more of the voltage-controlled capacitors.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: April 28, 2015
    Assignee: Space Systems/Loral, LLC
    Inventors: Slawomir J. Fiedziuszko, Stephen C. Holme, Stephen D. Berry
  • Patent number: 9019037
    Abstract: A six-port circuit (100) with two input ports and four output ports, comprising a balun (110) for converting signals at one input port into first (112) and second (113) balanced signals, and a filter (105), with first and second input ports and four output ports as the four output ports of the circuit. The six-port circuit also comprises a splitter (120) for splitting second input signals at the other input port into first (121) and second (122) parts. The input ports (V?in1, V?in2) of the filter (105) are connected so that one of the balanced signals (112) and one of the parts (121) of the second input signals are connected to one of the filter's input ports (V?in1), and the other of the balanced signals (113) and the other (122) of the parts of the second input signals are connected to the other of the filter's input ports (V?in2).
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: April 28, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventor: Mingquan Bao
  • Patent number: 9006934
    Abstract: A power feeding apparatus, power receiving apparatus, wireless power feeding system, and method for wireless transfer of power are provided. The power feeding apparatus includes an impedance detector, a controller, a power transmitter, a variable matching circuit, and a signal transmitter. The controller is configured to provide first control information and second control information based on an impedance detected by the impedance detector. The power feeding apparatus' variable matching circuit is configured to change a variable diameter of a power feeding coil according to the first control information. The power receiving apparatus includes a power receiver, a signal receiver, and a variable matching circuit. The power receiving apparatus'variable matching circuit is configured to change a variable diameter of a power feeding coil according to the second control information provided by the power feeding apparatus.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: April 14, 2015
    Assignee: Sony Corporation
    Inventors: Osamu Kozakai, Takashi Miyamoto, Yuji Murayama
  • Patent number: 9007146
    Abstract: A duplexer includes a package substrate having layers stacked, a transmission filter and a reception filter that are provided on an upper surface of a first layer that is one of the layers of the package substrate, the transmission and reception filters being acoustic wave filters, a metal pattern provided on the upper surface of the first layer and formed to surround the transmission and reception filters, a transmission line provided on an upper surface of a second layer that is one of the layers of the package substrate and is positionally lower than the first layer, the transmission line electrically connecting the transmission filter and a transmission terminal together, and a reception line that is provided on the upper surface of the second layer and electrically connects the reception filter and a reception terminal. The thickness of the first layer is greater than that of the second layer.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: April 14, 2015
    Assignee: Taiyo Yuden Co., Ltd.
    Inventor: Toshio Nishizawa
  • Patent number: 8971219
    Abstract: An integrated duplexer based on electrical balance is described. The duplexer module includes a hybrid transformer. The hybrid transformer includes a primary coil and a secondary coil. The primary coil is coupled between an output of a power amplifier and an antenna. The secondary coil is coupled between an input of a low noise amplifier and ground. The duplexer also includes a balancing impedance that is coupled between the primary coil and the secondary coil.
    Type: Grant
    Filed: January 7, 2013
    Date of Patent: March 3, 2015
    Assignee: QUALCOMM Incorporated
    Inventor: Ojas M. Choksi
  • Patent number: 8970320
    Abstract: A filter circuit includes a filter part connected between an input terminal and an output terminal and configured to have a passband, and a path connected in parallel with the filter part between the input terminal and the output terminal, the path having an impedance that enables a first signal passing through the path from the input terminal to the output terminal and a second signal passing through the filter part from the input terminal to the output terminal to have an opposite phase relationship in a frequency band outside of the passband and have almost equal amplitudes in the frequency band.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: March 3, 2015
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Masafumi Iwaki, Jun Tsutsumi, Yuki Endo
  • Patent number: 8937517
    Abstract: A splitter includes an input terminal, a first output terminal, a second output terminal, a first transmitting unit including a first microstrip coupled between the input terminal and a first node, a second microstrip coupled between the input terminal and a second node, and a first resistor coupled between the first node and the second node, and a second transmitting unit including a third microstrip coupled between the first node and the first output terminal, a fourth microstrip coupled between the second node and the second output terminal, and a second resistor coupled between the first output terminal and the second output terminal, wherein lengths of the first microstrip and the second microstrip are related to a first frequency, and lengths of the third microstrip and the fourth microstrip are related to a second frequency.
    Type: Grant
    Filed: July 16, 2012
    Date of Patent: January 20, 2015
    Assignee: Wistron NeWeb Corporation
    Inventors: Chen-Chia Huang, Chun-Feng Yang
  • Patent number: 8933765
    Abstract: A filter includes: an input terminal to which a fundamental wave signal and a harmonic signal group of the fundamental wave signal are supplied; an output terminal configured to output the fundamental wave signal supplied to the input terminal; a transmission line configured to connect the input terminal and the output terminal; an open-end stub configured to be provided corresponding to an odd harmonic signal among the harmonic signal group, coupled to the transmission line, and has a length corresponding to one quarter of a wavelength of the corresponding odd harmonic signal; a first short-end stub configured to be coupled to the transmission line and has a length corresponding to one quarter of a wavelength of the fundamental wave signal; and a second short-end stub configured to be coupled to the transmission line.
    Type: Grant
    Filed: August 19, 2010
    Date of Patent: January 13, 2015
    Assignee: Fujitsu Limited
    Inventor: Akihiko Akasegawa
  • Patent number: 8928430
    Abstract: An impedance matching apparatus is provided. The impedance matching apparatus includes a signal separation unit, an impedance detection unit, and an impedance matching unit. The signal separation unit separates a transmission and reception signal, and selectively passes a desired frequency corresponding to the transmission and reception signal. The impedance detection unit includes a plurality of impedances, and detects first and second electric potentials between the impedances. The impedance matching unit compares the first and second electric potentials detected by the impedance detection unit, and changes a matching factor for one of the impedances included in the impedance detection unit to match the impedances according to the compared result.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: January 6, 2015
    Assignee: LG Innotek Co., Ltd.
    Inventor: Ju Young Song
  • Patent number: 8912864
    Abstract: A high-frequency signal combiner includes a first input terminal for the connection of a first high-frequency signal, a second input terminal for the connection of a second high-frequency signal, an output terminal for the output of the third high-frequency signal combined from the first and the second high-frequency signal. A first coaxial line extends between the first input terminal and the output terminal. A second coaxial line extends between the second input terminal and the output terminal. Furthermore, an annular core is provided, through the recess of which the first and second coaxial line are guided each in a different direction. The annular core is manufactured from an axially wound strip which includes a first layer made of a magnetizable material and a second layer made of an insulating material.
    Type: Grant
    Filed: October 7, 2010
    Date of Patent: December 16, 2014
    Assignee: Rohde & Schwarz GmbH & Co. KG
    Inventor: Michael Morgenstern
  • Patent number: 8896393
    Abstract: A coupling interface couples a transceiver to one or more capacitive voltage dividers of a power transmission system. The coupling interface includes a first signal path including an adjustable inductance configured to form a resonance circuit with a capacitance associated with the one or more capacitive voltage dividers. The coupling interface may include a second signal path including an adjustable inductance configured to form a resonance circuit with the capacitance associated with the one or more capacitive voltage dividers.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: November 25, 2014
    Assignee: STMicroelectronics S.r.l.
    Inventors: Riccardo Fiorelli, Antonio Cataliotti, Dario Di Cara, Giovanni Tine
  • Patent number: 8878627
    Abstract: A monolithic power splitter is used to split a pair of input differential signals into two pairs of output differential signals in the present invention. The monolithic power splitter has two input terminals to receive a pair of input differential signals, and it has two one-by-two power splitters integrated in one single chip to split a pair of input differential signals into two pairs of output differential signals with equal power. And, the monolithic power splitter has four output terminals to output two pairs of output differential signals. In one embodiment, the first one-by-two power splitter and the second one-by-two power splitter are made on the same surface of the substrate. In another embodiment, the first one-by-two power splitter and the second one-by-two power splitter are made on opposite surfaces of the substrate. The monolithic power splitter can be used as a power combiner based on the reciprocal property of the power splitter circuit.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: November 4, 2014
    Assignee: Cyntec Co., Ltd.
    Inventor: Shih-Hsien Tseng
  • Patent number: 8872601
    Abstract: A circuit module includes a duplexer and a circuit substrate. A first signal path connects a first external electrode to a second external electrode. A second signal path connects a third external electrode to a fourth external electrode. A third signal path connects a fifth external electrode to a sixth external electrode. A first ground path connects a seventh external electrode to an eighth external electrode. A second ground path is connected to a ninth external electrode and is capacitively coupled to the second signal path.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: October 28, 2014
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Takashi Yamane, Katsuhiro Ikada, Yasuhiko Hirano
  • Patent number: 8872599
    Abstract: A power synthesis circuit for a radio frequency (RF) power amplifier comprises a first matching network and a second matching network, which are connected with two-band signal output ports of the RF power amplifier respectively, and signal coupling circuits which are connected with two-band signal receiving ports respectively. The first matching network and the second matching network are connected with an antenna circuit via a duplexer, and are grounded via an inductor and a switch element which is connected in parallel to the inductor respectively. The leakage of signal among different channels is prevented. The transmission quality of the RF signal is improved. The cost of the power amplifier is reduced and the structure of the power amplifier is simplified.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: October 28, 2014
    Assignee: ZYW Microelectronics, Inc
    Inventors: Fengxiong Peng, Xuguang Zhang
  • Patent number: 8872600
    Abstract: The high frequency circuit module includes an RFIC configured to transmit and receive a high frequency signal, a power amplifier IC configured to amplify a transmission signal outputted from the RFIC, and a duplexers configured to separate the transmission signal outputted from the power amplifier IC and inputted to an antenna and a reception signal from the antenna and inputted to the RFIC from each other, in which at least one of the RFIC and power amplifier IC is embedded in the circuit substrate, and the duplexers are disposed between the RFIC and the power amplifier IC.
    Type: Grant
    Filed: January 8, 2014
    Date of Patent: October 28, 2014
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Hiroshi Nakamura, Tomohiro Igarashi
  • Patent number: 8860254
    Abstract: Disclosed herein is a power feeding apparatus, including: a power feeding portion adapted to feed an electric power in a wireless manner; and a storage body storing therein the power feeding portion. The storage body includes a main body, a first storage portion formed within the main body and storing therein the power feeding portion, and at least one second storage portion formed so as to be adapted to store or retrieve a power receiving apparatus as a storage object in or from the main body, the electric power of the power feeding portion stored in the first storage portion being adapted to be fed from the at least one second storage portion. At least a magnetically shielding portion is formed in an outer peripheral portion, and the at least one second storage portion forms a magnetically closed space in a state of being stored in the main body.
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: October 14, 2014
    Assignee: Sony Corporation
    Inventors: Osamu Kozakai, Hiroyuki Mita
  • Patent number: 8854155
    Abstract: A duplexing system may be used with an electronic device. The duplexing system may include a duplexer connected with an antenna. The duplexing system may include a balancing network. The balancing network may be connected with the duplexer, have an adjustable network impedance, and include an active component. The balancing network may be configured to adjust the network impedance to match an antenna impedance of the antenna.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: October 7, 2014
    Assignee: Broadcom Corporation
    Inventors: Mohyee Mikhemar, Hooman Darabi
  • Patent number: 8830010
    Abstract: The high frequency circuit module includes an RFIC configured to transmit and receive a high frequency signal, a power amplifier IC configured to amplify a transmission signal outputted from the RFIC, and a duplexers configured to separate the transmission signal outputted from the power amplifier IC and inputted to an antenna and a reception signal from the antenna and inputted to the RFIC from each other, in which at least one of the RFIC and power amplifier IC is embedded in the circuit substrate, and the duplexers are disposed between the RFIC and the power amplifier IC.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: September 9, 2014
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Hiroshi Nakamura, Tomohiro Igarashi
  • Patent number: 8816794
    Abstract: A signal branching filter according to the invention is a signal branching filter connected to a network having at least four terminals. The signal branching filter includes a first line one end of which is connected to a first terminal of the network, a second line one end of which is connected to a second terminal of the network, a third line one end of which is connected to a third terminal of network, and a fourth line one end of which is connected to a fourth terminal of the network. The other end of the first line and the other end of the second line are connected to each other at a first node, and the other end of the third line and the other end of the fourth line are connected to each other at a second node. When a signal is received from the first node, a phase difference between a phase of a signal appearing on a second node side of the third line and a phase of a signal appearing on a second node side of the fourth line is almost 180°±360°*n is an integer equal to or larger than 0).
    Type: Grant
    Filed: March 12, 2009
    Date of Patent: August 26, 2014
    Assignee: Panasonic Corporation
    Inventors: Motohiko Sako, Susumu Fukushima, Hidenori Kitamura, Yuta Yamamoto, Takuya Hayashi
  • Patent number: 8803634
    Abstract: In a branching device, an LPF includes a first inductor arranged such that some conductor layers from among conductor layers are wound in a clockwise direction, and a second inductor arranged such that a conductor layer from among the conductor layers is wound in an counterclockwise direction. In addition, an HPF includes a third inductor arranged such that conductor layers are wound in the same clockwise direction as the first inductor. Therefore, when a high-frequency signal passes through the LPF, a winding direction is reversed. In addition, when a high-frequency signal passes through the HPF, a winding direction is reversed.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: August 12, 2014
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Kunitoshi Hanaoka
  • Patent number: 8803635
    Abstract: A system of providing filter isolation may include a first filter configured to pass a first frequency range and a second filter configured to pass a second frequency range. The system may also include a circulator communicatively coupled to the first filter at a first port of the circulator and communicatively coupled to the second filter at a second port of the circulator. The circulator may be configured to receive a first signal at a third port of the circulator and direct the first signal from the third port to the first port and away from the second port. The circulator may also be configured to receive a second signal filtered by the second filter at the second port of the circulator and direct the second signal from the second port to the third port and away from the first port.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: August 12, 2014
    Assignee: Wilson Electronics, LLC
    Inventors: Christopher K. Ashworth, James W. Wilson
  • Publication number: 20140218127
    Abstract: A high-frequency module includes a multilayer substrate, a switch IC, a SAW duplexer and a matching circuit. The matching circuit includes a wiring line and first and second inner layer ground electrodes. The matching circuit performs impedance matching between the switch IC and the SAW duplexer in a pass band of the SAW duplexer. The wiring line is an inner layer electrode of the multilayer substrate that is connected between the switch IC and the SAW duplexer. The first and second inner layer ground electrodes face the wiring line in a stacking direction with only dielectric layers of the multilayer substrate therebetween.
    Type: Application
    Filed: January 31, 2014
    Publication date: August 7, 2014
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Yuji NURIKABE, Hiromichi KITAJIMA
  • Patent number: 8779872
    Abstract: A radio is provided for transmit-receive isolation and filtering (INTRIFWA) that are sealed and/or integrally built-in a housing of a transmitter, which can be used in microwave communication systems, including satellite based communications systems and terrestrial based microwave communication systems.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: July 15, 2014
    Assignee: Hughes Network Systems, LLC
    Inventors: Thomas Jackson, Guo Chen, Larry Cronise, Peter Hou, Barre Lankford, Edmund Lott, Ross Thomson
  • Patent number: 8773107
    Abstract: A method and apparatus configured to detect electromagnetic field events are disclosed. One apparatus includes an antenna and a circuit electrically connected to the antenna. The circuit includes electronics communicatively connected to the antenna via a direct current isolation circuit and an equalizer compensating for the differentiating frequency response of the antenna. The circuit also includes a logarithmic amplifier electrically connected to the equalizer and configured to generate a range of signals based on signals received at the antenna. The circuit further includes a peak detector receiving signals from the equalizer and configured to capture a peak value of the signals. The electromagnetic field event is detected at least in part based on the peak signal value.
    Type: Grant
    Filed: October 18, 2010
    Date of Patent: July 8, 2014
    Assignee: Emprimus, LLC
    Inventors: David Blake Jackson, Greg Fuchs, Frederick R. Faxvog, Terrence R. Noe
  • Patent number: 8773220
    Abstract: Disclosed are a radio frequency (RF) front end module and a multi-band communication module using the RF front end module. The RF front end module may use a plurality of bandpass filters and at least one diplexer being connected to at least one of front ends or rear ends of two bandpass filters of the plurality of bandpass filters.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: July 8, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chul Soo Kim, Jun Chul Kim, Dong Su Kim, In Sang Song, Duck Hwan Kim, Yun Kwon Park, Jea Shik Shin