For Providing Frequency Separation Patents (Class 333/132)
  • Patent number: 10389330
    Abstract: An electronic component a multilayer body including insulation layers stacked in a stacking direction, a mounting surface that opposes a circuit board when the electronic component is mounted on the circuit board, first and second input/output terminals provided on the mounting surface and adjacent to each other, a ground terminal, a first filter circuit, in the multilayer body, electrically connected between the first input/output terminal and the second input/output terminal, and a ground conductor layer, provided between the first filter circuit and the mounting surface in the stacking direction, that overlaps with the first input/output terminal and the second input/output terminal when viewed in plan view from the stacking direction, and that is connected to the ground terminal.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: August 20, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Yusuke Mukai
  • Patent number: 10389310
    Abstract: A radio-frequency signal amplifier circuit that is used in a front-end circuit and that propagates a radio-frequency transmission signal and a radio-frequency reception signal is described. The amplifier circuit has an amplifier transistor, a bias circuit, a resistor, and an LC series resonance circuit. The LC series resonant circuit has one end that is connected to a node between the resistor and a signal input terminal, and has another end that is connected to a grounding terminal. A resonant frequency of the LC series resonance circuit is included in a difference frequency band between the frequencies of the transmission signal and the reception signal.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: August 20, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Reiji Nakajima, Hidenori Obiya
  • Patent number: 10379500
    Abstract: Systems and methods for detecting the failure of a precision time source using an independent time source are disclosed. Additionally, detecting the failure of a GNSS based precision time source based on a calculated location of a GNSS receiver is disclosed. Moreover, the system may be further configured to distribute a time derived from the precision time source as a precision time reference to time dependent devices. In the event of a failure of the precision time source, the system may be configured to distribute a time derived from a second precision time source as the precision time signal during a holdover period.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: August 13, 2019
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Shankar V. Achanta, David E. Whitehead, Henry Loehner
  • Patent number: 10367475
    Abstract: Aspects of this disclosure relate to a multiplexer, such as a duplexer, a quadplexer, a hexaplexer, or the like. The multiplexer includes acoustic wave filters coupled to a common node. At least one of the acoustic wave filters includes surface acoustic wave resonators and a series bulk acoustic wave resonator coupled between the surface acoustic wave resonators and the common node.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: July 30, 2019
    Assignee: Skyworks Solutions, Inc.
    Inventor: Joshua James Caron
  • Patent number: 10355667
    Abstract: A ladder filter defines a transmission filter and has a structure such that a resonator located closest to an input terminal is a parallel-arm resonator, and the parallel-arm resonator located closest to the input terminal includes a plurality of division resonators connected in parallel. At least one division resonator has a resonant frequency and an anti-resonant frequency that are located outside a passband of the ladder filter, and the remaining division resonators and parallel-arm resonators each have an anti-resonant frequency located within the passband.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: July 16, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Toshiaki Takata
  • Patent number: 10348265
    Abstract: A transformer-type phase shifter or a phase-shift circuit includes a first coil and a second coil that is magnetically coupled to the first coil with a coupling coefficient of less than 1, a transformer including a parallel inductance component and a series inductance component, and an impedance adjustment circuit including a reactance element that performs impedance adjustment for the transformer, thus being advantageous in reducing the size, loss, and frequency dependency of the phase-shift amount.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: July 9, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Kenichi Ishizuka, Hiroshi Nishida
  • Patent number: 10256794
    Abstract: A radio-frequency module includes a switching device having first and second switch arms and a common pole node connected to both the first and second switch arms, a first shunt arm connected to the first switch arm, and a first transmission line disposed in the first switch arm between the common pole node and the first shunt arm, the first transmission line being configured to present a substantially open circuit looking into the first switch arm from the common pole node at a fundamental frequency of a signal transmitting on the second switch arm when the first switch arm is in an OFF-state and the first shunt arm is in an ON-state.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: April 9, 2019
    Assignee: Skyworks Solutions, Inc.
    Inventors: Nuttapong Srirattana, David Scott Whitefield, David Ryan Story
  • Patent number: 10236862
    Abstract: A problem is improved in which a plurality of duplexers has to be used if at least one of a transmission band and reception band for a handheld terminal partially overlaps a frequency band used in another communication system. A duplexer device includes a duplexer configured to include an antenna terminal, a transmission terminal and a reception terminal and to have a specific transmission band and reception band and a band-stop filter connected to at least one of the antenna terminal, the transmission terminal and the reception terminal via a switch and configured to suppress some of at least one of the specific transmission band and reception band in response to the switching of the switch.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: March 19, 2019
    Assignee: WISOL JAPAN CO, LTD.
    Inventors: Takahiro Sato, Kensei Uehara, Motoyuki Tajima
  • Patent number: 10148249
    Abstract: A high frequency circuit includes a first demultiplexing circuit including a first high pass filter and a low pass filter and a second demultiplexing circuit including a band elimination filter and a band pass filter, the second demultiplexing circuit being connected in series with the first demultiplexing circuit. At least one of the band elimination filter and the band pass filter includes an elastic wave resonator. An attenuation band of the band elimination filter and a pass band of the band pass filter is located between a pass band of the first high pass filter and a pass band of the low pass filter.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: December 4, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Yoshihiro Yoshimura, Masanori Kato
  • Patent number: 10116283
    Abstract: Multi-band filters, communications devices, and methods of designing multi-band filters are disclosed. A multi-band filter has a lower pass-band and an upper pass-band separated by an intervening stop-band. The multi-band filter includes a first ladder network and a second ladder network coupled in series. The first ladder network provides transmission zeros at frequencies below a lower edge of the lower pass-band and transmission zeros at frequencies above an upper edge of the upper pass-band. The second ladder network provides transmission zeros at frequencies within the intervening stop-band.
    Type: Grant
    Filed: October 6, 2017
    Date of Patent: October 30, 2018
    Assignee: Resonant Inc.
    Inventor: Gregory L. Hey-Shipton
  • Patent number: 10103704
    Abstract: A diplexer module includes substrates, an external connection terminal, a first diplexer including a first transmission filter and a first reception filter, a second diplexer including a second transmission filter and a second reception filter, and a switch. The external connection terminal is connected to the switch, the switch is connected to the first diplexer and the second diplexer, and the first transmission filter, the second transmission filter, the second reception filter, and the first reception filter are aligned in this order when the substrates are seen in plan view from above.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: October 16, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Masato Yoshida, Tadashi Washimori
  • Patent number: 10062629
    Abstract: Antenna aperture tuning circuitry includes a first signal path and a second signal path coupled in parallel between an antenna radiating element and ground. A first LC resonator and a second LC resonator are each coupled between the first signal path and ground. The first LC resonator and the second LC resonator are electromagnetically coupled such that a coupling factor between the first LC resonator and the second LC resonator is between about 1.0% and 40.0%. A third LC resonator and a fourth LC resonator are each coupled between the second signal path and ground. The third LC resonator and the fourth LC resonator are electromagnetically coupled such that a coupling factor between the third LC resonator and the fourth LC resonator is between about 1.0% and 40.0%.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: August 28, 2018
    Assignee: Qorvo US, Inc.
    Inventors: George Maxim, Dirk Robert Walter Leipold, Marcus Granger-Jones, Baker Scott
  • Patent number: 10027307
    Abstract: An extensible filter structure is disclosed allowing realizable effective filtering over many decades in frequency. Multiple devices operating with mismatched frequency ranges can be multiplexed together with or without switching.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: July 17, 2018
    Inventor: Roger W. Dickerson
  • Patent number: 9979378
    Abstract: Mechanical resonators including doped piezoelectric active layers are described. The piezoelectric active layer(s) of the mechanical resonator may be doped with a dopant type and concentration suitable to increase the electromechanical coupling coefficient of the active layer. The increase in electromechanical coupling coefficient may all for improved performance and smaller size mechanical resonators than feasible without using the doping.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: May 22, 2018
    Assignee: Analog Devices, Inc.
    Inventor: Florian Thalmayr
  • Patent number: 9960749
    Abstract: Embodiments of the present application provide an intra-band combiner-divider and a multisystem combining platform, and the intra-band combiner-divider includes: a first-level duplexer, an intra-band combination unit, an intra-band division unit, and a second-level duplexer. In the embodiments of the present application, two ends of the intra-band combiner-divider are connected to the first-level duplexer and the second-level duplexer, so that the intra-band combiner-divider can separately process uplink and downlink signals, thereby reducing PIM of a communication system and improving receiver sensitivity of a base station.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: May 1, 2018
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Lanping Gong, Zhen Yuan
  • Patent number: 9948278
    Abstract: In a filter device, a first filter and a second filter are connected to a common connection point by a filter connection conductor line including a first conductor line portion, and a parallel connection area with an electrical length shorter than that in a single conductor line is provided in the first conductor line portion.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: April 17, 2018
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Tetsuro Okuda
  • Patent number: 9877061
    Abstract: An apparatus and method for processing satellite signals is provided. A switch receives an input signal having a predetermined frequency range, the predetermined frequency range including at least two frequency sub-bands. A first diplexer is connected to a first output of the switch and generates a first filtered signal including a first frequency sub-band and a second frequency sub-band and a second filtered signal including a third frequency sub-band. A second diplexer is connected to a second output of the switch and generates a third filtered signal including the first frequency sub-band and a fourth filtered signal including the second frequency sub-band. A controller activates the switch to operate between a first mode and a second mode.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: January 23, 2018
    Assignee: THOMSON Licensing
    Inventor: Lincheng Xiu
  • Patent number: 9866265
    Abstract: A high frequency circuit module is provided with: a multilayer circuit substrate; a first high frequency switch that switches connection of an antenna; a transmission filter; and reception filters. Either the transmission filter or the reception filters, or both, and the first high frequency switch are embedded in the multilayer circuit substrate, and ground conductors are formed in a conductive layer facing embedded electronic components.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: January 9, 2018
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Tetsuo Saji, Hiroshi Nakamura
  • Patent number: 9825611
    Abstract: Multi-band filters and communications devices are disclosed. A multi-band filter has a lower pass-band and an upper pass-band separated by an intervening stop-band. The multi-band filter includes a first ladder network and a second ladder network coupled in series. The first ladder network is configured to provide transmission zeros at frequencies below a lower edge of the lower pass-band and transmission zeros at frequencies above an upper edge of the upper pass-band. The second ladder network is configured to provide transmission zeros at frequencies within the intervening stop-band.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: November 21, 2017
    Assignee: Resonant Inc.
    Inventor: Gregory L. Hey-Shipton
  • Patent number: 9819384
    Abstract: A multiplexer device includes an antenna node connected to an antenna for at least one of receiving and transmitting signals; multiple band pass filters connected to the antenna node, each band pass filter having a different passband; and multiple notch filters connected in to the antenna node and the multiple band pass filters, each notch filter having a different stopband corresponding to one of the passbands of the band pass filters. The notch filters are connected in parallel with one another in order to reduce insertion loss.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: November 14, 2017
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Hongya Xu, Andriy Yatsenko, Lueder Elbrecht, Martin Handtmann
  • Patent number: 9813043
    Abstract: Tunable diplexers in three-dimensional (3D) integrated circuits (IC) (3DIC) are disclosed. In one embodiment, the tunable diplexer may be formed by providing one of either a varactor or a variable inductor in the diplexer. The variable nature of the varactor or the variable inductor allows a notch in the diplexer to be tuned so as to select a band stop to eliminate harmonics at a desired frequency as well as control the cutoff frequency of the pass band. By stacking the elements of the diplexer into three dimensions, space is conserved and a variety of varactors and inductors are able to be used.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: November 7, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Chengjie Zuo, Daeik D. Kim, Je-Hsiung Lan, Jonghae Kim, Mario Francisco Velez, Changhan Yun, David F. Berdy, Robert P. Mikulka, Matthew M. Nowak, Xiangdong Zhang, Puay H. See
  • Patent number: 9787415
    Abstract: A method and apparatus for estimating and compensating TX LO leakage using circuitry on a loopback path connecting the transmitter and receiver are provided. The TX LO leakage may be estimated by measuring the DC signal on the receiver, measuring the phase difference between the received LO signal and the receiver LO signal, and filtering LO harmonics that may arise from the use of non-linear mixers. The DC signal on the receiver may be measured by opening and closing the loopback path, or changing the gain of the loopback path, or flipping the phase of looped back TX signal. The method may be used in an initialization or tracking calibration scheme.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: October 10, 2017
    Assignee: ANALOG DEVICES, INC.
    Inventors: Jianxun Fan, Reza Alavi, Steven R. Bal, David J. McLaurin
  • Patent number: 9761367
    Abstract: Multiplexing circuitry is disclosed that includes filtering circuitry, which provides a first transfer function between a common port and a first port and a second transfer function between the common port and a second port. The first transfer function and second transfer function provide a first passband and a second passband, respectively. The first transfer function also has a stopband provided within the second passband of the second transfer function due to the filtering circuitry including a first parallel resonant circuit provided in series in a first filter path being weakly coupled to a second parallel resonant provided in shunt with respect to a second filter path. The weak coupling between the first parallel resonant circuit and the second parallel resonant circuit thus naturally provides a stopband in the first transfer function within the second passband of the second transfer function.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: September 12, 2017
    Assignee: Qorvo US, Inc.
    Inventors: Dirk Robert Walter Leipold, George Maxim, Baker Scott
  • Patent number: 9667216
    Abstract: A wideband tunable combiner system for a dual frequency diversity transmitter is provided that includes a tunable capacitance network. Incoherent RF signals with the same audio signal may be combined with the system into a combined RF signal for transmission on an antenna. The tunable capacitance network, in conjunction with a combiner and a band pass filter, may optimize the isolation between the incoherent RF signals and reduce intermodulation, while maintaining a wide operating bandwidth. The capacitance value of the tunable capacitance network may be selected based on the frequencies of the incoherent RF signals, RF spectrum information, or antenna loading data. An RF transmitter including the tunable combiner system may have improved spectral efficiency and performance and take advantage of available spectrum.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: May 30, 2017
    Assignee: Shure Acquisition Holdings, Inc.
    Inventor: Robert Szopko
  • Patent number: 9647634
    Abstract: In an elastic wave filter device, a package substrate is provided with an elastic wave filter chip defining a ladder circuit including a plurality of series arm resonators and a plurality of parallel arm resonators, and a first inductance connected in parallel with at least one of the series arm resonators and a second inductance connected between at least one of the parallel arm resonators and a ground potential. The first inductance and the second inductance provided in the package substrate, and the first inductance is magnetically coupled to the second inductance to shift a frequency position of an attenuation pole.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: May 9, 2017
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Akira Michigami
  • Patent number: 9634702
    Abstract: Methods and apparatus, including computer program products, are provided for receivers. In one aspect there is provided an apparatus. In some example embodiments, there is provided an apparatus. The apparatus may include a first N-path filter configured with at least a first passband, wherein the first N-path filter is coupled to a radio frequency input port providing at least a first carrier aggregation signal, a second carrier aggregation signal, and an interfering signal; a second N-path filter configured with at least a second passband, wherein the second N-path filter is coupled to the radio frequency input port providing at least the first carrier aggregation signal, the second carrier aggregation signal, and the interfering signal; and a combiner configured to subtract a first output of the first N-path filter from a second output of the second N-path filter. Related apparatus, systems, methods, and articles are also described.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: April 25, 2017
    Assignee: Nokia Technologies Oy
    Inventors: Chadi Jabbour, Sudhir Aggarwal, Vason P. Srini
  • Patent number: 9608593
    Abstract: A filter device with a ladder circuit configuration includes series arm resonators and parallel arm resonators, a filter component mounted on a mounting substrate and including a chip substrate and an elastic wave filter chip, a circuit configuration in which a plurality of series arm resonators and parallel arm resonators are defined by the elastic wave filter chip, and inductances are connected between ground-potential-side end portions of the plurality of parallel arm resonators and a ground potential, and in which at least one of the plurality of inductances is provided in the chip substrate and a remaining at least one inductance is provided in the mounting substrate.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: March 28, 2017
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Tetsuro Okuda
  • Patent number: 9520226
    Abstract: A contactless power supply is provided. The contactless power supply includes two or more primary coils for generating a region of cooperative magnetic flux generally therebetween. A portable device having a secondary coil can be positioned proximate this region of magnetic flux to receive wireless power from the contactless power supply. The spaced-apart primary coils can be wound in alternating directions about a common axis and driven in phase, or can be wound in a single direction about a common axis and driven approximately 180 degrees out of phase. The contactless power supply can include a plurality of primary coils in an adjustable array to accommodate multiple portable devices each with different secondary configurations and power consumption needs.
    Type: Grant
    Filed: April 6, 2012
    Date of Patent: December 13, 2016
    Assignee: Access Business Group International LLC
    Inventors: Matthew J. Norconk, Joshua K. Schwannecke, David W. Baarman, Neil W. Kuyvenhoven, Benjamin C. Moes, Colin J. Moore
  • Patent number: 9497652
    Abstract: Electronic devices may be provided that contain wireless communication circuitry. The wireless communication circuitry may include radio-frequency transceiver circuitry coupled to antennas by switching circuitry. Multiple radio access technologies may be supported. A device may include first and second antennas. Control circuitry can configure the transceiver circuitry and switching circuitry to support operation of the device in active and idle modes for each radio access technology. In some configurations, both antennas may be used to support operations associated with one of the radio access technologies. In other configurations, the first antenna may be used to support operations with a first of the radio access technologies while the second antenna is used to support operations with a second of the radio access technologies.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: November 15, 2016
    Assignee: Apple Inc.
    Inventors: Syed Aon Mujtaba, Wen Zhao, Xiaowen Wang, Vinay Majjigi, Isabel G. Mahe
  • Patent number: 9479137
    Abstract: A filter device includes a single terminal and first and second balanced terminals. A balanced filter is connected between the single terminal and the first and second balanced terminals. The filter device includes a compensation circuit including at least one of a first compensation circuit portion connected between the single terminal and the first balanced terminal and a second compensation circuit portion connected between the single terminal and the second balanced terminal. The compensation circuit includes a resonant circuit that increases attenuation in a specified frequency band within a stop band of the balanced filter, compared with a case in which the compensation circuit is not connected.
    Type: Grant
    Filed: March 9, 2015
    Date of Patent: October 25, 2016
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Soichi Nakamura
  • Patent number: 9467184
    Abstract: A branch circuit includes a common antenna port and separates a first communication signal including a signal in a low band and a signal in a high band and a second communication signal that is a signal in a frequency band between the low band and the high band. The branch circuit includes a first-communication-signal-line-side band elimination filter and a second-communication-signal-line-side band elimination filter and SAW filter.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: October 11, 2016
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Kuniaki Yosui, Noboru Kato
  • Patent number: 9425850
    Abstract: A wireless device configured for simultaneous voice and data communications is described. The wireless device includes a voice and data transceiver. The voice and data transceiver includes data path circuitry, voice path circuitry, a first multiplexer and a second multiplexer. The first multiplexer sends a primary data receive signal to the data path circuitry and receives a data transmit signal from the data path circuitry. The second multiplexer sends a diversity data receive signal to the data path circuitry, sends a voice receive signal to the voice path circuitry and receives a voice transmit signal from the voice path circuitry. The wireless device also includes a first antenna coupled to the first multiplexer. The wireless device further includes a second antenna coupled to the second multiplexer.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: August 23, 2016
    Inventor: Sai C. Kwok
  • Patent number: 9412932
    Abstract: The present disclosure provides a piezoelectricity ceramic material. The piezoelectricity ceramic material includes main components that are represented by a general chemical formula of PbZraTib(Nb2/3Ni1/3)1-a-bO3+c%BaW0.5Cu0.5O3 d%SiO2 and satisfy the following condition: 0.1?a?0.4, 0.2?b?0.5, 0.1?c?3, and 0.05?d?1. The low-temperature sintering adopted by the present disclosure reduces energy consumption and reduces the volatilization of PbO, which avoids the fluctuation and deviation of the ceramic components, reduces the pollution to then environment caused by volatilization, and reduces the corrosion to the sintering machine as well. Furthermore, the present disclosure provides a piezoelectricity ceramic sinter and a method for processing the same, as well as a piezoelectricity ceramic device. In a multi-layer device, the device cost is greatly reduced.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: August 9, 2016
    Assignees: AAC Acoustic Technologies (Shenzhen) Co., Ltd., AAC Acoustic Technologies (Suzhou) Co., Ltd.
    Inventor: Shaohua Su
  • Patent number: 9413335
    Abstract: A high-frequency module includes a multilayer substrate, a filter substrate, a cover layer, a connection electrode, and inductors. The filter substrate includes a first principal surface on which an IDT electrode included in a filter unit is disposed, and the first principal surface faces a mounting surface of the multilayer substrate. The cover layer is spaced apart from and opposite to the first principal surface of the filter substrate. The connection electrode connects the multilayer substrate and the filter substrate. One of the inductors is connected between the filter unit and a first external connection terminal. Another one of the inductors is connected between the filter unit and the ground. The inductors are disposed inside the multilayer substrate. The inductors are inductively coupled to each other.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: August 9, 2016
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Syuichi Onodera, Syuji Yamato, Tadaji Takemura
  • Patent number: 9325353
    Abstract: An architecture for a radio frequency (RF) front-end is disclosed. The architecture for the RF front-end includes a circuit module that includes a plurality of dies partitioned on the circuit module. A plurality of filter banks with individual ones of the plurality of filter banks disposed on each of the plurality of circuit dies is also included. Further included is a plurality of switches having individual ones of the plurality of switches coupled to corresponding ones of the plurality of filter banks and in at least one embodiment a control system is configured to open and close selected ones of the plurality of switches.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: April 26, 2016
    Assignee: RF Micro Devices, Inc.
    Inventors: John Robert Siomkos, Jayanti Jaganatha Rao, Christopher Truong Ngo
  • Patent number: 9264013
    Abstract: Systems for reducing magnetic coupling in integrated circuits (ICs) are disclosed. Related components and methods are also disclosed. The ICs have a plurality of inductors. Each inductor generates a magnetic flux that has a discernible axis. To reduce magnetic coupling between the inductors, the flux axes are designed so as to be non-parallel. In particular, by making the flux axes of the inductors non-parallel to one another, magnetic coupling between the inductors is reduced relative to the situation where the flux axes are parallel. This arrangement may be particularly well suited for use in diplexers having a low pass and a high pass filter.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: February 16, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Chengjie Zuo, Jonghae Kim, Daeik Daniel Kim, Mario Francisco Velez, Changhan Hobie Yun, Je-Hsiung Jeffrey Lan, Robert Paul Mikulka, Matthew Michael Nowak
  • Patent number: 9263780
    Abstract: A switch module includes a multilayer substrate including an antenna terminal, a ground terminal, and a high-frequency-side transmission signal terminal, as external connection terminals. A common-port-side circuit, a switch circuit, and a switching-port-side circuit are provided between the antenna terminal and the high-frequency-side transmission signal terminal. A first wiring portion connects a second inductor that defines a portion of the switching-port-side circuit to the high-frequency-side transmission signal terminal. When the multilayer substrate is viewed in plan, a first inductor, the second inductor, and via electrodes connected to the ground terminal are arranged between the first wiring portion, and second and third wiring portions and a capacitor which are connected to the antenna terminal.
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: February 16, 2016
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Atsushi Ono, Yukiteru Sugaya, Takanori Uejima
  • Patent number: 9203373
    Abstract: A diplexer includes a substrate having a set of through substrate vias. The diplexer also includes a first set of traces on a first surface of the substrate. The first traces are coupled to the through substrate vias. The diplexer further includes a second set of traces on a second surface of the substrate that is opposite the first surface. The second traces are coupled to opposite ends of the set of through substrate vias. The through substrate vias and the traces also operate as a 3D inductor. The diplexer also includes a capacitor supported by the substrate.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: December 1, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Chengjie Zuo, Jonghae Kim, Mario Francisco Velez, Je-Hsiung Lan, Daeik D. Kim, Changhan Yun, David F. Berdy, Robert P. Mikulka, Matthew M. Nowak, Xiangdong Zhang, Puay H. See
  • Patent number: 9203378
    Abstract: An elastic wave filter includes first and second longitudinally coupled elastic wave filters. The first filter includes a first pair of grating reflectors, first to fifth IDT electrodes arranged in ordinal order between the grating reflectors along a propagation direction of elastic waves, a first unbalanced terminal, and first and second balanced terminals. The second filter has a second unbalanced terminal, and third and fourth balanced terminals, the first and second unbalanced terminals being electrically connected to each other, the first and third balanced terminals being electrically connected to a first JO terminal, and the second and fourth balanced terminals being electrically connected to a second JO terminal. The first and second balanced terminals, and the third and fourth balanced terminals, output signals opposite in phase to each other. A first signal at the first JO terminal is opposite in phase to a second signal at the second IO terminal.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: December 1, 2015
    Assignee: SKYWORKS PANASONIC FILTER SOLUTIONS JAPAN CO., LTD.
    Inventors: Joji Fujiwara, Tetsuya Tsurunari, Hiroyuki Nakamura, Rei Goto
  • Patent number: 9197186
    Abstract: A duplexer comprising an improved matching circuit for matching between transmitting path and receiving path is specified. In this case, the matching circuit comprises a hybrid and matching elements.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: November 24, 2015
    Assignee: EPCOS AG
    Inventor: Edgar Schmidhammer
  • Patent number: 9166765
    Abstract: Provided is a high-frequency circuit module that has high mounting density. In a high-frequency circuit module, an RFIC that performs transmission and reception processes for high-frequency signals, a power amplifier IC that amplifies a transmission signal from the RFIC, and a duplexer that separates a transmission signal outputted from the power amplifier IC to an antenna and a reception signal that is inputted from the antenna to the RFIC are formed on the top surface thereof. The duplexer is disposed between the RFIC and the power amplifier IC.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: October 20, 2015
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Hiroshi Nakamura, Tomohiro Igarashi
  • Patent number: 9128177
    Abstract: Apparatus, method, and system example embodiments provide an improved RF front end to simultaneously transmit and receive signals for cellular telecommunications. In an example embodiment, an apparatus comprises a tunable duplexer selectively connected to an antenna, configured to transmit and receive radio frequency communication signals in a group of at least two bands; and a tunable transmit filter in the duplexer, capable of being tuned to have an inductance value approximately matching at least two inductance values corresponding respectively to pass the at least two bands in the group, each of the at least two bands in the group having a positive duplex offset and each of the at least two inductance values that correspond respectively to the at least two bands in the group, having an inductance value that approximately matches the inductance values corresponding respectively to the other bands in the group.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: September 8, 2015
    Assignee: Nokia Technologies Oy
    Inventor: Michael Reiha
  • Patent number: 9112473
    Abstract: A branching circuit includes a transmission filter and a reception filter. The transmission filter is connected between a transmission signal input terminal and an antenna connection terminal. The reception filter is connected between the antenna connection terminal and a reception signal output terminal in series together with a first phase shift circuit and a second phase shift circuit. A first amplitude adjustment circuit and a second amplitude adjustment circuit are connected in series between the antenna connection terminal and the reception signal output terminal. A junction point between the first amplitude adjustment circuit and the second amplitude adjustment circuit is connected to a junction point between the first phase shift circuit and the second phase shift circuit. The first and second phase shift circuits adjust the phase of a transmission signal that leaks to the reception side and that is to be canceled out.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: August 18, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Takanori Uejima, Morio Takeuchi
  • 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: 20150135252
    Abstract: An apparatus and method for applying signals into a filter circuit is disclosed. The apparatus includes a filter circuit that filters an input signal and outputs a signal in a first frequency range, and a filter circuit that filters the input signal and outputs a signal in a second frequency range that is different from the first frequency range, wherein the second filter circuit includes an interface circuit for inserting a signal used to receive the first frequency range signal. The method includes receiving a signal containing content from a first source in a first frequency range and content from a second source in a second frequency range, providing filtering to produce a signal containing the first content, providing filtering to produce a signal containing the second content, and applying a signal to second content signal processing circuitry, the signal provided used for receiving the content from the first source.
    Type: Application
    Filed: June 18, 2013
    Publication date: May 14, 2015
    Inventors: Max Muterspaugh, Dan Hutchinson, Rejimon Varghese
  • Publication number: 20150130558
    Abstract: A filter device includes a band pass filter connected between a first signal terminal and a second signal terminal and an LC circuit connected in parallel with the band pass filter. The LC circuit has anti-resonant characteristics that make the LC circuit be open at a pass band of the band pass filter, and make attenuation in a specified frequency band outside of the pass band of the band pass filter higher than in a case in which the LC circuit is not connected, as a result of the LC circuit being connected.
    Type: Application
    Filed: January 27, 2015
    Publication date: May 14, 2015
    Inventor: Koichiro KAWASAKI
  • Patent number: 9031516
    Abstract: A transceiver includes an antenna, an impedance adjustment device, an RF (Radio Frequency) front-end circuit, a storage device, and a processor. The antenna receives an RF signal. The impedance adjustment device is coupled to the antenna, and includes a plurality of branch circuit with different impedance values and a switch module. The processor is coupled to the RF front-end circuit and controls the switch modules. In a comparison mode, the switch module selects to connect to the branch circuits individually, and the processor detects each RSSI (Received Signal Strength Indications) value corresponding to the branch circuit and records all of the RSSI values to the storage device respectively. In the comparison mode, the processor further compares the RSSI values to for highest one. Finally, the switch module selects the branch circuit corresponding to the highest RSSI value as a transmission branch.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: May 12, 2015
    Assignee: Accton Technology Corporation
    Inventor: Wen-Chi Wang
  • 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: 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: 9031517
    Abstract: The present invention discloses a transmit-receive (TR) front end. The TR front end includes a low-noise amplifier (LNA); a power amplifier (PA); a transformer, coupled to the PA, for increasing a voltage swing and a power transmission of the PA; and a TR switch, coupled between the transformer and the LNA. The LNA is single ended and there is no transformer between the LNA and the TR switch.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: May 12, 2015
    Assignee: Mediatek
    Inventors: Albert Chia-Wen Jerng, Wen-Kai Li, Chien-Cheng Lin