Utilizing Long Line Element Patents (Class 333/134)
  • Publication number: 20140179364
    Abstract: In a circuit module, even if a transmission signal output from a transmission electrode of a mounting substrate to a transmission terminal of a splitter leaks into a ground electrode, the transmission signal that has leaked into the ground electrode is mainly transmitted along an edge of the ground electrode and the transmission signal that has leaked into the ground electrode flows into a plurality of via conductors arranged with end surfaces superposed with the edge of the ground electrode when viewed in plan. Therefore, a transmission signal that has been output from the transmission electrode and leaked into the ground electrode is prevented from traveling along the edge of the ground electrode toward the reception electrode side. As a result, isolation characteristics of the transmission electrode and the reception electrode from each other are improved.
    Type: Application
    Filed: December 9, 2013
    Publication date: June 26, 2014
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventor: Hiromichi KITAJIMA
  • Patent number: 8754726
    Abstract: In a multilayer band-pass filter, each of first-stage to third-stage LC parallel resonators includes capacitor electrodes, via electrodes, and a line electrode. Jump-coupling capacitor electrodes face the capacitor electrodes of the first-stage and third-stage LC parallel resonators. The direction in which the inductor electrode extends from the capacitor electrodes of each of the first-stage and third-stage LC parallel resonators is opposite to the direction in which the inductor electrode extends from the capacitor electrodes of the second-stage LC parallel resonator.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: June 17, 2014
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Hiroyuki Sasaki, Hiroshi Masuda, Tetsuo Taniguchi
  • Patent number: 8736398
    Abstract: Disclosed is a diplexed transmit (TX) filter and RF switch for suppressing third order intermodulation (IM3) products. Included are first and second duplexers each having a receive (RX) port, a TX port, and an RX/TX port. Also included are first and second power splitter/combiners each having first, second, and third terminals. Further included are first, second, and third phase shift networks. The first power splitter/combiner's first terminal is coupled to the first duplexer's TX port and a first switch segment is coupled between the first duplexer's RX/TX port and the first terminal of the second coupler. The first phase shift network is coupled to the second duplexer's TX port and a second switch segment in series with the second phase shift network is coupled between the second duplexer's RX/TX port and second coupler's second terminal. The third phase shift network is coupled to the second duplexer's RX terminal.
    Type: Grant
    Filed: August 3, 2011
    Date of Patent: May 27, 2014
    Assignee: RF Micro Devices, Inc.
    Inventors: Joshua J. Caron, Nadim Khlat
  • Patent number: 8729980
    Abstract: A CRLH resonator-based band-pass filter includes at least two CRLH resonators. The resonators are connected by capacitive coupling. The resonators includes a microstrip line having input and output ports. The microstrip line includes a first interdigital line serial-connected to the input port, a second interdigital line serial-connected to the output port, a connection line connecting the first and second interdigital lines, and an inductor line parallel-connected to the connection line and provided with a grounded end.
    Type: Grant
    Filed: November 3, 2010
    Date of Patent: May 20, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Dong-Ho Kim, Jae-Ick Choi, Sungtek Kahng, Geonho Jang
  • Patent number: 8704614
    Abstract: A cavity filter includes a base member defining therein a resonant chamber, an antenna port disposed at the center of the resonant chamber, two signal input/output ports respectively disposed at two distal ends of the resonant chamber for signal input/output, a cover member covering the base member, two feedback channels disposed in the base member at two opposite lateral sides relative to the resonant chamber and respectively connected between the signal ports and the antenna port, and wave-absorbing components respectively mounted in the feedback channels for removing surge waves from feedback frequency components in the feedback channels.
    Type: Grant
    Filed: May 25, 2011
    Date of Patent: April 22, 2014
    Assignee: Universal Microwave Technology, Inc.
    Inventors: Hsien-Wen Liu, Chien-Chih Lee, Chin-Hsuan Tsai, Shang-Yu Yang
  • Patent number: 8704613
    Abstract: A cavity filter having two series of resonance chambers bilaterally connected between an antenna port and two opposing signal input/output ports, each series of resonance chambers having the last resonance chamber thereof connected to the antenna port and the first resonance chamber thereof connected between the respective signal input/output port and the associating last resonance chamber to perform cross-coupling feedback, improving the quality of the signal received by the signal receiver using the cavity filter and enhancing signal transmission performance.
    Type: Grant
    Filed: May 25, 2011
    Date of Patent: April 22, 2014
    Assignee: Universal Microwave Technology, Inc.
    Inventors: Wei-Hong Hsu, Chien-Chih Lee, Jhih-Wei Wang, Wei-Chin Hsu
  • Patent number: 8698577
    Abstract: An apparatus comprising a first power combiner/divider network and a second power combiner/divider network. The first power combiner/divider network splits a first electromagnetic signal into split signals that are connectable to signal processor(s). The second power combiner/divider network combines processed signals into a second electromagnetic signal. The apparatus includes a three-dimensional coaxial microstructure.
    Type: Grant
    Filed: July 5, 2011
    Date of Patent: April 15, 2014
    Assignee: Nuvotronics, LLC
    Inventors: David Sherrer, Jean-Marc Rollin, Kenneth Vanhille, Marcus Oliver, Steve Huettner
  • Patent number: 8698576
    Abstract: An exemplary communication device includes a combiner having a first transmission line configured to be coupled with a first communication component. A second transmission line is configured to be coupled with a second communication component. A third transmission line is coupled with the first and second transmission lines. An isolation module is coupled with the first and second transmission lines. The isolation module has a resistance, a capacitance and an inductance configured to isolate the first communication component from the second communication component if one of the components is inoperative. The isolation module components are also configured to provide RF matching for the first and second transmission lines if one of the components is inoperative.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: April 15, 2014
    Assignee: Alcatel Lucent
    Inventors: Liang Hung, Michael Hodgetts
  • Publication number: 20140097913
    Abstract: The present invention relates to a multi-mode filter comprising a carrier on which is mounted a dielectric resonator having a covering of an electrically conductive material in which there is provided an aperture and a coupling structure for coupling input signals to the dielectric resonator or for extracting filtered output signals from the dielectric resonator. The carrier is provided with an enclosing formation of electrically conductive material, which enclosing formation is electrically coupled to the electrically conductive covering of the dielectric resonator, such that the covering and the enclosing formation together form an electrically conductive enclosure for the dielectric resonator. The enclosure formed from the covering of the dielectric resonator and the enclosing formation increases the isolation of the filter and reduces leakage. The filter of the present invention is particularly suitable for use in cascaded resonator filter arrangements, and in duplex/diplex filters.
    Type: Application
    Filed: October 9, 2012
    Publication date: April 10, 2014
    Applicant: MESAPLEXX PTY LTD
    Inventors: Steven John Cooper, David R. Hendry, Chris Boyle, Peter Blakeborough Kenington
  • Publication number: 20140091878
    Abstract: The invention relates to a multi port router device capable of carrying a number P, which is greater than or equal to three, of frequency channels, from a number M of input ports to a number N of output ports, at least one of the two numbers M and N being greater than or equal to two, characterised in that it includes at least two filters (12, 14, 16, 18), each filter comprising at least two coupled resonators, at least one resonator (Rs1, Rs2) being common to two different filters, and each input port and each output port being connected directly to at least one resonator.
    Type: Application
    Filed: September 30, 2013
    Publication date: April 3, 2014
    Applicants: Centre National D'Etudes Spatiales, Thales, Inria Institut National De Recherche En Informatiq ue Et En Automatique, Centre National De La Recherche Scienifique (C.N.R .S.)
    Inventors: Stéphane Bila, Laétitia Estagerie, Damien Pacaud, Jérôme Puech, Fabien Seyfert
  • Patent number: 8680943
    Abstract: The invention discloses a DCS/WCDMA dual frequency multiplexer. On one hand, the multiplexer utilizes distributed parameter type capacitors in place of conventionally used capacitors. On the other hand, within the multiplexer, a direct circuit and a RF circuit are isolated from each other physically. All components including capacitors co-exist together physically. Similarly, the invention further discloses a dual frequency multiplexer with large application range. It also utilizes the distributed parameter type capacitors like the DCS/WCDMA dual frequency multiplexer. Because the invention has redesigned the entire construction of the multiplexer, it results good effects such as small size, less differential loss, large power capacity, as well as high isolation degree between circuits.
    Type: Grant
    Filed: May 28, 2007
    Date of Patent: March 25, 2014
    Assignee: Comba Telecom System (China) Ltd.
    Inventors: Mengmeng Shu, Tao He, Bin He, Jingmin Huang
  • Publication number: 20140070903
    Abstract: The present disclosure discloses a structural capacitor, a connector comprising the structural capacitor and a communication apparatus using the connector. The structural capacitor comprises a rod and a holder. The rod comprises a first section and a second section connected with the first section, and the holder comprises a through hole. The first section and the second section are fitted into the through hole to accomplish the connection between the first section and the second section in an axial direction. The connector of the present disclosure features a simple structure, a convenient manufacturing process and a low cost. The communication apparatus of the present disclosure has advantages such as a simple manufacturing process, parameters that can be easily guaranteed, a low processing cost and a stable product performance.
    Type: Application
    Filed: September 11, 2012
    Publication date: March 13, 2014
    Applicant: Shenzhen Tatfook Technology Co., LTD.
    Inventor: WENJING WU
  • Patent number: 8665158
    Abstract: A printed filtering antenna is provided. This filtering antenna comprises an antenna part and a coupled line resonator. The antenna part is directly connected to a coupled line resonator and occupies an antenna area. The coupled line resonator provides a filtering mechanism together with the antenna part. The coupled line resonator comprises a short-circuited stub and an open-circuited stub. The short-circuited stub comprises an open-circuited end and a short-circuited end connected to ground. The open-circuited stub is parallel to the short-circuited stub. The open-circuited stub comprises a first end and a second end. The first end is connected to the feed point and is corresponding to the open-circuited end of the short-circuited stub such that the open-circuited stub is coupled to the short-circuited stub.
    Type: Grant
    Filed: January 2, 2012
    Date of Patent: March 4, 2014
    Assignee: National Chiao Tung University
    Inventors: Shyh-Jong Chung, Chao-Tang Chuang
  • Patent number: 8648669
    Abstract: A combiner/divider circuit may include a plurality of planar transmission lines that each may have a planar signal conductor and at least a planar signal-return conductor. Ends of different ones of the signal conductors of the plurality of transmission lines may interconnect with the signal conductor of a first transmission line may be connected to the signal conductors of second and third transmission lines. Signal-return conductors of the first, fourth, and fifth transmission lines may be connected along their lengths. Vias may connect signal-return conductors of the second and third transmission lines with respective signal conductors of the fourth and fifth transmission lines. The positions of the fourth and fifth striplines relative to the first strip line may reverse in a transition region spaced from the connection region.
    Type: Grant
    Filed: August 15, 2012
    Date of Patent: February 11, 2014
    Assignee: Werlatone, Inc.
    Inventor: Allen F. Podell
  • Patent number: 8629738
    Abstract: Provided is a composite resonator wherein two resonance frequencies can be set discretionarily to a certain extent. The composite resonator is provided with a grounding electrode (21) arranged on a lower surface of a laminated body wherein a plurality of dielectric layers (11) are laminated, and a composite resonant electrode (26) arranged on an upper surface or inside of the laminated body. The composite resonant electrode (26) is composed of a base section (27) and a plurality of strip-like protruding sections (28a, 28b). One end of the base section (27) is grounded. One end of each of the protruding sections (28a, 28b) is connected to the other end of the base section (27), and the protruding sections are arranged in parallel.
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: January 14, 2014
    Assignee: Kyocera Corporation
    Inventor: Hiromichi Yoshikawa
  • Patent number: 8598962
    Abstract: Pins on an RFIC package carry RF signals between the package and a PCB. A first capacitor is coupled between a selected pin of the RFIC package near the pins carrying the RF signals and a radio-frequency ground on the PCB. A coupling between the RFIC package and the PCB is modeled, and includes modeling of the pins of interest and at least one parasitic element of the coupling. A capacitance of the first capacitor is selected based on the modeling to obtain desired performance at selected operational frequencies. A second capacitor may be coupled between the selected pin a radio frequency ground of the RFIC package. An inductor may be coupled in parallel across the first capacitor.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: December 3, 2013
    Assignee: STMicroelectronics Ltd.
    Inventor: Oleksandr Gorbachov
  • Publication number: 20130307640
    Abstract: A transmission line resonator includes a half-wavelength stepped-impedance resonator with two ends short-circuited to ground, and a capacitive element with one end connected to a center portion of the stepped-impedance resonator and the other end short-circuited to ground. The stepped-impedance resonator includes a first transmission line, a second transmission line, and a third transmission line. The second transmission line has a second line impedance and a second line length, with one end being connected to one end of the first transmission line and the other end being short-circuited to ground. The third transmission line has the second line impedance and the second line length, with one end being connected to the other end of the first transmission line and the other end being short-circuited to ground. The first line impedance is lowered in comparison with the second line impedance.
    Type: Application
    Filed: January 27, 2012
    Publication date: November 21, 2013
    Applicant: THE UNIVERSITY OF ELECTRO-COMMUNICATIONS
    Inventors: Koji Wada, Morikazu Sagawa, Mitsuo Makimoto
  • Publication number: 20130285765
    Abstract: A broad band diplexer employing suspended strip-line capacitors is disclosed. The diplexer has a low pass filter circuit and a high band pass filter circuit. The high band pass filter circuit has a first set of conductive pathways formed on the first surface of a suspended dielectric substrate, a second conductive pathway formed on the second surface of the substrate such that first and second conductive pathways are capacitively coupled, and plural resonators. The high pass filter circuit provides plural transmission poles within the band of operation exceeding the number of resonators.
    Type: Application
    Filed: December 14, 2012
    Publication date: October 31, 2013
    Inventor: Purna SUBEDI
  • Publication number: 20130271239
    Abstract: The invention discloses a diplexer formed from the combination of a first filter and a second filter, wherein both the first filter and the second filter have at least one through-hole via inductor. The diplexer has an input terminal to receive an input signal. The first filter has a first terminal electrically connected to the input terminal and a second terminal to generate a first output signal; the second filter has a third terminal electrically connected to the input terminal and a fourth terminal to generate a second output signal. The diplexer has a first output terminal electrically connected to the second terminal of the first filter to output the first output signal and a second output terminal electrically connected to the fourth terminal of the second filter to output the second output signal.
    Type: Application
    Filed: January 15, 2013
    Publication date: October 17, 2013
    Inventors: Yu-Lin Liao, Ian-Chun Cheng
  • Publication number: 20130265119
    Abstract: A multi-cavity RF filter has at least one electrically conductive coupling probe disposed between two resonator cavities. The coupling probe is provided with an ESD protective arrangement such that the coupling probe is electrically connected to a metallic housing of the RF filter only by the ESD protective arrangement. The ESD protective arrangement is configured to provide (i) a low resistance electrical path from the coupling probe to the metallic housing and (ii) a high impedance to RF energy having wavelengths proximate to a center frequency wavelength of the RF filter.
    Type: Application
    Filed: April 9, 2012
    Publication date: October 10, 2013
    Applicant: SPACE SYSTEMS/LORAL, INC.
    Inventors: Stephen D. Berry, Stephen C. Holme, Slawomir J. Fiedziuszko
  • Publication number: 20130249651
    Abstract: A dielectric resonator filter and a method of manufacturing the same are disclosed. The dielectric resonator includes a metal housing having a top surface and a bottom surface and defining a resonator cavity, and a dielectric rod located within the resonator cavity. The dielectric rod is short-circuited at both the top surface and the bottom surface. A plurality of holes are formed in the dielectric rod parallel to an axis of the dielectric rod and a plurality of apertures are formed on the top surface corresponding to the positions of the holes, respectively. A plurality of screws are inserted into the holes through the apertures, respectively. The dielectric resonator supports dual TM11 degenerate modes, each of which forms an electric resonator. An insertion depth and a dimension of each of the screws is adjustable to adjust resonance frequencies of the dual degenerate modes and coupling between the dual degenerate modes.
    Type: Application
    Filed: March 22, 2013
    Publication date: September 26, 2013
    Applicant: The Chinese University of Hong Kong
    Inventors: Ke-Li Wu, Hai Hu
  • Patent number: 8493162
    Abstract: A combiner/divider circuit may include a plurality of transmission lines forming a junction, a sum port, a first component port, a second component port, and a difference port. A transmission line may be associated with the difference port and may be formed by inductively coupling a portion of each of two other transmission lines. The difference port may be terminated by a terminating impedance element at a location spaced apart from the junction, with the inductively coupled portions being between the junction and the terminating impedance element.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: July 23, 2013
    Assignee: Werlatone, Inc.
    Inventor: Allen F. Podell
  • Patent number: 8482362
    Abstract: A combiner/divider circuit may include first, second, third, fourth and fifth transmission lines each including a signal conductor and a signal-return conductor. The signal conductors at a first end of the first transmission line may form a first unbalanced sum signal terminal and the signal conductors at first ends of the second, third, fourth, and fifth transmission lines may form pairs of balanced signal terminals. The signal conductor at a second end of the first transmission line may be connected to the signal conductors at second ends of the fourth and fifth transmission lines. The signal conductors at second ends of the second and third transmission lines may be connected to the signal-return conductors at second ends of the fourth and fifth transmission lines, respectively. The second ends of the transmission lines may extend into the connection region along a common line.
    Type: Grant
    Filed: August 15, 2012
    Date of Patent: July 9, 2013
    Assignee: Werlatone, Inc.
    Inventor: Allen F. Podell
  • Publication number: 20130169379
    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: Application
    Filed: December 29, 2011
    Publication date: July 4, 2013
    Applicant: SPACE SYSTEMS/LORAL, INC.
    Inventors: Stephen C. Holme, Stephen D. Berry, Lawrence Alan Carastro
  • Patent number: 8471649
    Abstract: A compact Ku band microwave diplexer configured as a three port surface mount component on a miniature alumina substrate. Input signals occurring at a common port having frequencies within a first pass band are passed to a second port while being isolated from signals occurring at a third port. Signals occurring at the third port are passed to the common port while being isolated from the signals at the second port. A microstrip dual spur line filter is used combined with open circuit stubs to provide enhanced second harmonic suppression on the transmit side, while using a coupled line microstrip filter on the receive side. This approach allows for compact size and automated component assembly through pick and place and reflow manufacturing techniques.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: June 25, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Jeff Devereux, Fritz Gerd Berger, William A. Johnston, Mohammad Ali Tassoudji, Scott Aldern
  • Patent number: 8471650
    Abstract: A diplexer that can demultiplex and multiplex two signals having wide frequency bands, and a wireless communication module and a wireless communication apparatus using the same, are provided. A diplexer has a multilayer body including a first interlayer, a second interlayer and a third interlayer. On the first interlayer, first resonant electrodes are disposed in an interdigital form. On the second interlayer, a plurality of second resonant electrodes are disposed in an interdigital form. On the third interlayer, there are disposed an input coupling electrode that faces the input-stage first resonant electrode and the input-stage second resonant electrode in an interdigital form, a first output coupling electrode that faces the output-stage first resonant electrode in an interdigital form, and a second output coupling electrode that faces the output-stage second resonant electrode.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: June 25, 2013
    Assignee: Kyocera Corporation
    Inventors: Hiromichi Yoshikawa, Shinji Isoyama, Katsuro Nakamata
  • Publication number: 20130099876
    Abstract: A filter of the present invention includes a plurality of via structures with a multilayer substrate. Each of the plurality of via structures includes first, second and third functional sections. One end of a signal via of the first functional section is connected to one end of a signal via of the second functional section and another end of the signal via of the second functional section is connected to two signal vias of the third functional section. Those signal vias are surrounded by a plurality of ground vias. Input and output ports of the filter are connected to another end of the signal via of each first functional section.
    Type: Application
    Filed: June 30, 2010
    Publication date: April 25, 2013
    Inventor: Taras Kushta
  • Patent number: 8422947
    Abstract: A communication device includes a communication circuit part, a transmission path for signals, a ground, a coupler electrode, and a resonance part. The coupler electrode includes an upper flat part as an electrode, a support, and a connecting portion. The support supports the upper flat part. Thus, the upper flat part faces the ground and is separately placed therefrom at a height only enough to ignore the wavelength of the signal, while having a flexible portion which is elastically deformable in the height direction. On the connecting portion, the other end of the support is connected to the transmission path. The resonance part enlarges a current flowing into the coupler electrode through the transmission path. A micro dipole is a line segment connecting between the center of accumulated electric charge in the coupler electrode and the center of mirror charge accumulated in the ground.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: April 16, 2013
    Inventor: Satoshi Konya
  • Publication number: 20130088306
    Abstract: The present disclosure relates to microwave cavity filters used in cellular communication systems. More specifically, in one aspect, the present disclosure relates to the integration of combline cavity filters directly with antenna elements without galvanic connections. In another aspect, the present disclosure relates methods for loading combline filters without contact.
    Type: Application
    Filed: September 4, 2012
    Publication date: April 11, 2013
    Applicant: POWERWAVE TECHNOLOGIES, INC.
    Inventors: Purna C. Subedi, Khurram Parviz Sheikh
  • Patent number: 8416034
    Abstract: A signal splitting apparatus comprises a micro-strip line, a first inductor and a second inductor. A first end and a second end of the micro-strip line are grounded via a first capacitor and a second capacitor, respectively. The first end and the second end of the micro-strip line are electrically coupled to a receiving part of a transceiver and a transmitting part of the transceiver, respectively. One end of the first inductor is coupled to the first end of the micro-strip, and the other end of the first inductor is electrically coupled to an antenna module and grounded via a third capacitor. One end of the second inductor is coupled to the second end of the micro-strip, and the other end of the second inductor is electrically coupled to the antenna module.
    Type: Grant
    Filed: October 13, 2010
    Date of Patent: April 9, 2013
    Assignee: Ralink Technology Corporation
    Inventors: Shen Yi Liao, Shao Chin Lo
  • Publication number: 20130038406
    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: Application
    Filed: October 18, 2012
    Publication date: February 14, 2013
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventor: Murata Manufacturing Co., Ltd.
  • Patent number: 8358182
    Abstract: There is described a duplexer comprising: a dielectric substrate having a circuit-receiving surface and an opposite surface; a ground structure deposited on the circuit-receiving surface or the opposite surface; a first filter connectable to a first terminal and having a first frequency bandpass; a second filter connectable to a second terminal and having a second frequency bandpass different from the first frequency bandpass, the first filter and the second filter each having at least one filter section deposited on the circuit-receiving surface; and an uncovered coupling circuit connectable to a third terminal and deposited on the circuit-receiving surface between the first filter and the second filter, the coupling circuit being spaced apart from the first and second filter by a coupling gap and configured for electromagnetically coupling the first filter and the second filter together.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: January 22, 2013
    Assignee: Ecole de Technologie Superieure
    Inventors: Ammar Kouki, Ahmed El-Zayat
  • Patent number: 8350644
    Abstract: A band pass filter combiner carrying a broadband signal with a central frequency comprises a power divider, a high pass band filter, a low pass band filter, and a power combiner. The distance from the signal input port of the power divider to each of signal input ports of the high pass band filter and the low pass band filter is equal to a quarter of the wavelength at the central frequency. The distance from each of signal output ports of the high pass band filter and the low pass band filter to the signal output port of the power combiner is also equal to a quarter of the wavelength at the central frequency.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: January 8, 2013
    Assignee: Microelectronics Technology, Inc.
    Inventors: Che Yao Fan, Hong Ru Suchen
  • Publication number: 20130002371
    Abstract: A duplexer includes: a reception filter connected between a reception terminal and an antenna terminal; a transmission filter connected between a transmission terminal and the antenna terminal; and a wiring substrate including the reception filter and the transmission filter in an upper surface, the reception terminal, the transmission terminal and the antenna terminal being formed in a lower surface, and a reception electrode electrically connected to the reception terminal, a transmission electrode electrically connected to the transmission terminal, an antenna electrode electrically connected to the antenna terminal, and a circular metal layer surrounding the reception, transmission and antenna electrodes, and electrically connected to a ground being formed in an upper surface, wherein a shortest distance between a side of the circular metal layer closest to the reception and transmission terminals and the reception electrode is larger than a width of the side of the circular metal layer.
    Type: Application
    Filed: September 11, 2012
    Publication date: January 3, 2013
    Applicant: TAIYO YUDEN CO., LTD.
    Inventor: Satoru ONO
  • Patent number: 8344826
    Abstract: A phased-array antenna filter and diplexer for a super economical broadcast system are provided. The filter and diplexer includes a signal divider tee diplexer, a receive filter and a transmit filter. The diplexer includes a tee branch point, an antenna port, a transmit port and a receive port. The receive filter includes a flat, multi-pole bandpass filter, an input port and an output port, where the input port is coupled to the diplexer receive port to define a receive signal path, from the tee branch point to the receive input port, that has a length of approximately one quarter receive wavelength. The transmit filter includes a folded, multi-pole bandpass filter, an input port and an output port, where the output port is coupled to the diplexer transmit port to define a transmit signal path, from the tee branch point to the transmit output port, that has a length of approximately one quarter transmit wavelength.
    Type: Grant
    Filed: April 21, 2009
    Date of Patent: January 1, 2013
    Assignee: SPX Corporation
    Inventors: Chris Rossiter, Robert Dunning, Torbjorn Johnson
  • Publication number: 20120313727
    Abstract: The present invention relates to a structure of a diplexer that prevents outputs of both signals from influencing each other by removing mutual interference between both signals when a signal having a high pulse frequency and a signal having a low pulse frequency are combined and radiated by using the same antenna, and more particularly, to a 2-channel diplexer structure with two channels in which a substrate having a predetermined size is configured, five microstrip lines are arranged on the top of the substrate to be parallel to each other with a predetermined interval.
    Type: Application
    Filed: June 1, 2012
    Publication date: December 13, 2012
    Inventor: Yhl PARK
  • Patent number: 8319583
    Abstract: An N-way multi-layer radial power combiner/divider comprises an RF layer including N planar RF transmission lines radiating from a common port to N ports. An isolation layer substantially parallel to the RF layer comprises a star resistor having N resistive arms radiating from a common junction and N planar isolation transmission lines coupled in series to respective resistive arms. Each series pair of a resistive arm and an isolation transmission line is ideally a half-wavelength in electrical length. N vertical interconnects between the RF layer and the isolation layer connect the ends of the N isolation transmission lines to the ends of the N RF transmission lines at the N individual ports, respectively. Any path from one individual port through the common junction of the star resistor to another individual port is approximately a full wavelength ?c or multiple thereof so that the phase angle through the isolation network is approximately zero degrees.
    Type: Grant
    Filed: August 24, 2009
    Date of Patent: November 27, 2012
    Assignee: Raytheon Company
    Inventor: Steven E. Huettner
  • Patent number: 8299872
    Abstract: An ultra wideband dual-frequency combiner includes a combination port (Port 1), a first port (Port 2), a second port (Port 3), two coaxial resonator band pass filters and two direct current channels. The first direct current channel is connected between the first port (Port 2) and the combination port (Port 1). The second direct current channel is connected between the second port (Port 3) and the combination port (Port 1). One end of the first coaxial resonator hand pass filters (610, 611) is electrically connected with the first port (Port 2) via a first blocking capacitor. One end of the second coaxial resonator hand pass filter (620, 621) is electrically connected with the second port (Port 3) via a second blocking capacitor. The other ends of the first coaxial resonator band pass filter and the second coaxial resonator band pass filter are connected with the combination port (Port 1) via a third blocking capacitor. The blocking capacitors are parameter distributed capacitors.
    Type: Grant
    Filed: April 11, 2007
    Date of Patent: October 30, 2012
    Assignee: Comba Telecom System (China) Ltd.
    Inventors: Yingjie Di, Tao He, Bin He, Mengmeng Shu, Jingmin Huang
  • Patent number: 8294532
    Abstract: A duplex filter includes a core of dielectric material with top, bottom, and side surfaces, and first and second spaced-apart sets of through-holes extending therethrough. A wall extends outwardly from the top surface to define a peripheral rim and cavity. A pattern of metallized and unmetallized areas are defined on selected core surfaces including strips of metallization on the top surface that extend onto the wall and the peripheral rim thereof to define respective transmit, receive, and antenna connection posts. In one embodiment, the core is made from two separate blocks which have been coupled together to define an interior metallized layer which separates the first and second sets of through-holes and an exterior wall on the top surface separates the respective transmit and receive conductive patterns thereon.
    Type: Grant
    Filed: January 7, 2010
    Date of Patent: October 23, 2012
    Assignee: CTS Corporation
    Inventor: Jeffrey J. Nummerdor
  • Patent number: 8283995
    Abstract: A balanced-output triplexer includes: a first filter provided between an input terminal and a pair of first balanced output terminals; a second filter provided between the input terminal and a pair of second balanced output terminals; and a third filter provided between the input terminal and a pair of third balanced output terminals. All of the first to third filters are provided within a layered substrate. All of the balanced output terminals are disposed to be adjacent to one of the sides of the top surface of the layered substrate and one of the sides of the bottom surface of the layered substrate.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: October 9, 2012
    Assignee: TDK Corporation
    Inventors: Atsunori Okada, Tatsuya Fukunaga, Hideya Matsubara
  • Patent number: 8237518
    Abstract: The present invention relates to an antenna-filter module for transferring radio frequency electromagnetic signals between the ambient air and an electronic circuit. The module includes an antenna element and at least two integrated band pass filter disposed adjacent to said antenna element. The antenna element is arranged as a joint antenna element, having a substantially greater bandwidth than each filter and providing a number of antenna-filter combinations within the module. The joint antenna element is arranged in close proximity to a first resonator of each filter in the module so as to provide an electromagnetic coupling to the resonators of each filter and a differentiated, specific pass band for the respective antenna-filter combination. Each filter is provided with a coupling member for coupling to an electronic circuit, such as an amplifier.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: August 7, 2012
    Assignee: Powerwave Technologies Sweden AB
    Inventor: Krister Andreasson
  • Publication number: 20120169414
    Abstract: Power amplifying systems and modules and components therein are designed based on CRLH structures, providing high efficiency and linearity.
    Type: Application
    Filed: March 2, 2012
    Publication date: July 5, 2012
    Inventors: Alexandre Dupuy, Ajay Gummalla, Maha Achour
  • Publication number: 20120112854
    Abstract: In one aspect of the invention, a duplexer including a multilayer substrate with multiple stacked layers and a back surface with a rectangular shape is disclosed. An antenna terminal, a transmission terminal, a reception terminal, a ground terminal, and a conductor are provided in various positions on the multilayer substrate for improved performance.
    Type: Application
    Filed: October 20, 2011
    Publication date: May 10, 2012
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Masafumi IWAKI, Motoaki HARA, Tokihiro NISHIHARA
  • Patent number: 8174340
    Abstract: A ceramic monoblock filter including a direct signal path defined by at least four spaced-apart through-hole resonators in combination with ground bars extending between the through-hole resonators and a separate quadruplet cross-coupling alternate signal path defined by two conductive pads located adjacent the first and fourth ones of the through-hole resonators respectively and a separate external bridge member which interconnects and couples the two pads. The bridge member is preferably made of a material having a lower dielectric constant than the block of the filter. In one embodiment, the filter is a monoblock duplexer filter comprising respective transmit and receive sections each including at least four of the through-hole resonators, the ground bars, the two pads, and the bridge member. In the duplexer embodiment, additional through-hole resonators may define shunt zeros.
    Type: Grant
    Filed: May 4, 2010
    Date of Patent: May 8, 2012
    Assignee: CTS Corporation
    Inventors: Reddy Vangala, Tri Dinh
  • Patent number: 8125293
    Abstract: A communication system includes a network, plural nodes, and a reducer. The network includes a main line and a plurality of branch lines branched from the main line respectively, the main line and each of the branch lines being respectively formed into a differential two-wire type of communication line consisting of a first communication line and a second communication line. The plural nodes are connected to two or more branch lines of the plurality of branch lines to communicate frames of data among the branches with each other. The reducer is connected to each node to reduce either an impedance of each of the first and second communication lines or an impedance between the first and second communication lines during a specified period of time starting at a time instant when a node completes sending out frames of data to be transmitted.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: February 28, 2012
    Assignee: Denso Corporation
    Inventors: Naoto Sakai, Koji Kondo
  • Patent number: 8115569
    Abstract: Disclosed herein is a monoblock dielectric multiplexer capable of processing multi-band signals. The monoblock dielectric multiplexer includes a dielectric block implemented as a hexahedral dielectric forming a body of the monoblock dielectric multiplexer. An external electrode is applied to an external surface of the dielectric block except for to a top surface. Resonant holes are each formed in a cylindrical shape and formed through the top surface and a bottom surface of the dielectric block. Internal electrodes are respectively formed on inner walls of the resonant holes. A plurality of capacitance patterns is formed on the top surface of the dielectric block and is configured to surround corresponding resonant holes. Input/output electrode units are formed and spaced apart from the capacitance patterns and configured to form capacitance coupling to the capacitance patterns. A common antenna stage is formed in a center portion of the dielectric block.
    Type: Grant
    Filed: September 17, 2009
    Date of Patent: February 14, 2012
    Assignee: Industry-University Cooperation Foundation Sogang
    Inventors: Kiejin Lee, Jong Chel Kim, Young Soo Jang
  • Patent number: 8111115
    Abstract: Novel quadruple-mode, dual-mode, and dual-band filters as well multiplexers are presented. A cylindrical dielectric resonator sized appropriately in terms of its diameter D and length L will operate as a quadruple-mode resonator, offering significant size reduction for dielectric resonator filter applications. This is achieved by having two mode pairs of the structure resonate at the same frequency. Single-cavity, quad-mode filters and higher order 4n-pole filters are realizable using this quad-mode cylindrical resonator. The structure of the quad-mode cylinder can be simplified by cutting lengthwise along its central axis to produce a half-cut cylinder suitable for operation in either a dual-mode or a dual-band. Dual-mode, 2n-pole filters are realizable using this half-cut cylinder. Dual-band filters and diplexers are further realizable using the half-cut structure and full cylinder by carrying separate frequency bands on different resonant modes of the structure.
    Type: Grant
    Filed: June 5, 2009
    Date of Patent: February 7, 2012
    Assignee: Com Dev International Ltd.
    Inventors: Raafat R. Mansour, Mohammad Memarian
  • Publication number: 20120019336
    Abstract: A Radio Frequency (RF) splitter/combiner technique for splitting and combining RF signals using a combination of microstrip traces and coaxial cable for an N-port network is disclosed.
    Type: Application
    Filed: January 10, 2011
    Publication date: January 26, 2012
    Applicant: xG Technology, Inc.
    Inventors: Nadeem Khan, William Pistole, III
  • Patent number: 8093963
    Abstract: A three-stage-resonator, laminated bandpass filter comprising electromagnetically coupled first to third resonator electrodes, adjacent first and second resonator electrodes and a third resonator electrode being different in a grounding direction, and a coupling-capacitor electrode extending over resonator electrodes.
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: January 10, 2012
    Assignee: Hitachi Metals, Ltd.
    Inventors: Takahiro Yamashita, Kazuhiro Hagiwara, Keisuke Fukamachi, Shigeru Kemmochi
  • Patent number: RE43957
    Abstract: In a high-frequency module, mounting lands arranged to mount at least one filter device having at least one set of an unbalanced terminal and two balanced terminals are provided at one side of a substrate top surface, and mounting lands arranged to mount at least one element electrically connected to the filter device are arranged at the opposite side. At least two of a plurality of connection terminals provided on a substrate bottom surface are respectively connected to conductor patterns connected to via-hole conductors penetrating the substrate within a mounting area for mounting the filter device via connection lines and are arranged at a pitch which is less than the pitch of the via-hole conductors.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: February 5, 2013
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Taturo Nagai