Patents Examined by Seungsook Ham
  • Patent number: 8362855
    Abstract: An RF cavity filter is disclosed. The disclosed filter includes: a housing having at least one cavity defined; a cover coupled to an upper portion of the housing; at least one resonator contained within the at least one cavity; at least one hole formed in the cover; at least one grounding bolt configured to be inserted into the hole, having a screw thread formed on a part of an outer perimeter, and having a center hole in a center portion; and at least one tuning bolt inserted into the housing through the center hole along a screw thread formed on an inner perimeter of the center hole, where the grounding bolt has a flange part formed on a lower portion that is in contact with the tuning bolt and a lower portion of the cover.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: January 29, 2013
    Assignee: Ace Technologies Corporation
    Inventor: Seung-Cheol Lee
  • Patent number: 8314667
    Abstract: A coupled line filter includes: a first line resonator connected input port and a second line resonator connected with output port each having an electrical length of 270° at a predetermined center frequency, the first and second line resonators being disposed parallel to each other; and a third line resonator including one or more line resonators disposed between the first line resonator and the second line resonator, each line resonator having an electrical length of 90° at the center frequency and a first side aligned with first sides of the first line resonator and the second line resonator, wherein an order of the coupled line filter is determined by summing the number of the line resonators included in the third line resonator and the first and second line resonators.
    Type: Grant
    Filed: October 28, 2009
    Date of Patent: November 20, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Man-Seok Uhm, Youn-Sub Noh, Changsoo Kwak, So-Hyeun Yun, Kiburm Ahn, In-Bok Yom
  • Patent number: 8305156
    Abstract: A printed circuit board includes a signal layer and a ground layer adjacent to the signal layer. The signal layer includes a pair of differential transmitting lines. The ground layer includes a common mode filter formed by hollow spiral patterns in the ground layer. The common mode filter includes two filter portions respectively arranged at opposite sides of a projection of the pair of differential transmitting lines onto the ground layer. Hollowed areas of the two filter portions are bridged by a void.
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: November 6, 2012
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventors: Yu-Chang Pai, Po-Chuan Hsieh, Chien-Hung Liu
  • Patent number: 8299875
    Abstract: A cavity filter defines a cavity with an opening on a top portion thereof and includes a lid to cover the opening of the cavity. A plurality of resonators are secured on a bottom portion opposite to the top portion of the cavity. The lid includes a plurality of bases extending from the lid toward the plurality of the resonators, respectively. A plurality of threaded holes penetrating the lid and one of the bases faces to the plurality of resonators, respectively. Each threaded hole includes a stopper portion extending from an inner surface of the threaded hole inward to form a step defining a hole in communication with the threaded hole. Each threaded hole corresponds to a tuning post to adjust a resonating frequency of the cavity filter.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: October 30, 2012
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Kwo-Jyr Wong
  • Patent number: 8299877
    Abstract: Disclosed is a resonator for wireless power transmission used in a mobile device. The resonator includes a substrate, at least one microstrip line, and a magnetic core. The microstrip line is formed on the substrate and is provided at one side thereof with a slit to have an open-loop shape. The magnetic core is formed on the substrate and is disposed on a space defined by the microstrip line to increase coupling strength.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: October 30, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-tak Hong, Sang-wook Kwon, Eun-seok Park, Won-keun Kong
  • Patent number: 8299876
    Abstract: A filter for filtering noise generated by a differential signal having a specific wavelength transmitted by a first transmission line and a second transmission line is disclosed. The filter includes a multi-layer substrate, a first microstrip line and a second microstrip line. The first and the second transmission lines and the first and the second microstrip lines are disposed at the multi-layer substrate. In addition, one end of the first microstrip line and one end of the second microstrip line are electrically connected to the first and the second transmission lines, respectively, by passing through the vias, and the other end is in a floating state. The impedances of the first and the second microstrip lines match the impedances of the first and the second transmission lines, respectively. Thus, the first and the second microstrip lines may filter the noise generated by the differential signal having the specific wavelength.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: October 30, 2012
    Assignee: ASUSTeK COMPUTER Inc.
    Inventors: Pei-Yang Lin, Chih-Chung Lin, Wen-Lin Yang
  • Patent number: 8294536
    Abstract: A cavity filter includes an enclosure, resonators secured inside the enclosure, a lid, a slider, and a driving device. The enclosure includes a bottom portion, sidewalls extending from edges of the bottom portion to define a cavity. Each sidewall defines a positioning portion at a top surface thereof. The lid covers the enclosure. The slider includes tuning cells each partially coated with metal and positioned opposite to one of the resonators. The slider is movably disposed between the lid and the resonators and slides on the positioning portions. The driving device is located inside the enclosure and drives the slider to move along the positioning portions to adjust a resonating frequency of the cavity filter.
    Type: Grant
    Filed: April 22, 2010
    Date of Patent: October 23, 2012
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Kwo-Jyr Wong
  • Patent number: 8289108
    Abstract: Various exemplary embodiments relate to a temperature compensation structure for use in a dielectric resonator that permits a support to be thermally efficient in rapidly transferring heat generated by a central puck in the resonator. The temperature compensation structure may have an extension shaped to promote heat from the puck into the support, thereby permitting high power operation of the dielectric resonator without overheating.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: October 16, 2012
    Assignee: Alcatel Lucent
    Inventors: Raja K Reddy, Yin-Shing Chong
  • 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: 8284000
    Abstract: A resonator includes: a dielectric block; first and second ground electrodes provided on or in the dielectric block, and disposed to oppose each other; a first via conductor provided in the dielectric block orthogonally to the first and second ground electrodes, and having a short-circuit end connected to the first ground electrode and an open end extending toward the second ground electrode; a second via conductor interdigitally-coupled with the first via conductor, and provided in the dielectric block orthogonally to the first and second ground electrodes, and having a short-circuit end connected to the second ground electrode and an open end extending toward the first ground electrode; a first capacitor electrode provided in the dielectric block, and connected to the first via conductor; and a second capacitor electrode provided in the dielectric block, and connected to the second via conductor.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: October 9, 2012
    Assignee: TDK Corporation
    Inventor: Tatsuya Fukunaga
  • Patent number: 8279022
    Abstract: Systems and devices for providing differential input/output communication with a superconducting device are described. Each differential I/O communication is electrically filtered using a respective tubular filter structure incorporating superconducting lumped element devices and high frequency dissipation by metal powder epoxy. A plurality of such tubular filter structures is arranged in a cryogenic, multi-tiered assembly further including structural/thermalization supports and a device sample holder assembly for securing a device sample, for example a superconducting quantum processor. The interface between the cryogenic tubular filter assembly and room temperature electronics is achieved using hermetically sealed vacuum feed-through structures designed to receive flexible printed circuit board cable.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: October 2, 2012
    Assignee: D-Wave Systems Inc.
    Inventors: Murray C. Thom, Alexander M. Tcaciuc, Gordon Lamont, Jacob Craig Petroff, Richard David Neufeld, David S. Bruce, Sergey V. Uchaykin
  • Patent number: 8269582
    Abstract: Various exemplary embodiments relate to a tuning element assembly and method for tuning an a radio frequency (RF) component, where the component has one or more walls defining a cavity, with at least one wall having at least one bore hole. A bushing is mounted in the bore hole in the wall, and a tuning element is slidably mounted and received in the bushing so that the tuning element projects inwardly through the bushing and into the cavity and is axially adjustable. A method of tuning an RF component also includes providing a bushing mounted in a bore in a wall of the RF component, sliding a tuning element that is slidably mounted and received in the bushing so that the tuning element projects inwardly through the bushing and into the cavity by a distance varying according to the sliding of the tuning element, monitoring a performance characteristic of the RF component, and releasing the tuning element so that a desired performance characteristic is achieved.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: September 18, 2012
    Assignee: Alcatel Lucent
    Inventors: Jari M. Taskila, Teppo M. Lukkarila, Andrzej E. Stanek
  • Patent number: 8264304
    Abstract: A microwave device of the slot-line type with a photonic band gap structure, including at least: a first substrate in a dielectric material having a first permittivity ?r1, a second substrate in a dielectric material having a second permittivity ?r2, and between the two substrates, a conductive layer in which at least one slot-line is engraved, with, on the face of the first and second substrates opposite the face in contact with the conductive layer, facing the slot-line, periodic metal patterns. A compact filtering structure is realized.
    Type: Grant
    Filed: January 3, 2005
    Date of Patent: September 11, 2012
    Assignee: Thomson Licensing
    Inventors: Nicolas Boisbouvier, Ali Louzir, Françoise Le Bolzer, Anne-Claude Tarot, Kouroch Mahdjoubi
  • Patent number: 8258897
    Abstract: Coupling between non-adjacent resonators and wave propagation through the waveguide structure in distributed EM filters are reduced by forming one or more holes in one or more of the resonators (planar or folded) and by passing a conductive structure through each hole normal to the resonator. The conductive structures (vertical vias or horizontal strips) are preferably grounded, either by direct connection or capacitive coupling to one or more ground planes or by creation of a virtual ground. The holes are spaced apart from the edges of the resonator so as to minimize any interference with the current and fields concentrated at the edges of each resonator. These conductive structures narrow the effective cavity width “aeff” for the waveguide as a whole and between non-adjacent resonators without affecting the cavity width “a” between adjacent resonators.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: September 4, 2012
    Assignee: Raytheon Company
    Inventors: Kevin W. Patrick, Jeremy B. Baldwin, Joel C. Blumke, Sergio E. Cardona, David J. Karasiewicz
  • Patent number: 8253512
    Abstract: A low pass filter circuit includes an inductor and a capacitor. A first terminal of the inductor functions as an input to receive direct current voltage, and a second terminal of the inductor is connected to a first terminal of the capacitor through first and second conductor traces connected in series. A second terminal of the capacitor is grounded. Widths of the first and second conductor traces both range from about 2 mils to about 5 mils. A node between the first and second conductor traces outputs the direct current.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: August 28, 2012
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventor: Guang-Feng Ou
  • Patent number: 8253509
    Abstract: A printed circuit board includes a signal layer and a ground layer adjacent to the signal layer. The signal layer includes a pair of differential transmission lines. The ground layer includes a first void, a second void, a third void, and a common mode filter. The first void and the second void are respectively arranged at opposite sides of a projection of the pair of differential transmission lines on the ground layer, and are bridged with the third void. The common mode filter includes a first filter portion positioned in the first void, and a second filter portion positioned in the second void. Each of the first and second filter portions includes a number of coils arranged side by side along a direction parallel to the projection of the pair of differential transmission lines.
    Type: Grant
    Filed: June 25, 2010
    Date of Patent: August 28, 2012
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventors: Yu-Chang Pai, Chien-Hung Liu, Po-Chuan Hsieh
  • Patent number: 8248191
    Abstract: A filter includes a circuit board, a low-pass filter circuit, and a high-pass filter circuit. The circuit board includes at least one metal layer, and a dielectric layer attached on the at least one metal layer. The low-pass filter circuit is defined in the metal layer, and includes a main line that has two parallel portions, and a modulating circuit serving as a capacitor connected to the main line of the low-pass filter circuit. The high-pass filter circuit defined in the metal layer includes a main line that has two parallel portions and is connected to the low-pass filter circuit, and a modulating circuit serving as a conductor connected to the main line of the high-pass filter circuit.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: August 21, 2012
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Guang-Ze Li, Gui-Dong Zhu
  • Patent number: 8248190
    Abstract: The resonator includes first high-impedance wiring plate-like, arranged parallel to top-surface ground electrode; second high-impedance wiring plate-like, arranged so as to face first high-impedance wiring; first columnar conductor electrically connecting first high-impedance wiring to second high-impedance wiring; first low-impedance wiring arranged between first high-impedance wiring and second high-impedance wiring; second columnar conductor electrically connecting first high-impedance wiring to first low-impedance wiring; second low-impedance wiring arranged between first low-impedance wiring and second high-impedance wiring; and third columnar conductor electrically connecting second high-impedance wiring to second low-impedance wiring, to reduce the area size the resonator.
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: August 21, 2012
    Assignee: Panasonic Corporation
    Inventors: Masaya Tamura, Toshio Ishizaki
  • Patent number: 8248188
    Abstract: A fixation arrangement for a resonator of a cavity body includes a cavity body including a base, a resonator defining a cavity and comprising a bottom, a screw including sharply arc-shaped head and securing the resonator on the base of the cavity body, and a sticky element located between the screw head of the screw and the bottom of the resonator.
    Type: Grant
    Filed: February 1, 2010
    Date of Patent: August 21, 2012
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Kwo-Jyr Wong
  • Patent number: 8242862
    Abstract: Tunable bandpass filters are provided. In one embodiment, the invention relates to a tunable bandpass filter including a dielectric substrate having a first surface opposite to a second surface, a conductive ground plane disposed on the first surface, a microstrip conductive trace pattern disposed on the second surface, the trace pattern defining a phase velocity compensation transmission line section including a series of spaced alternating T-shaped conductor portions, at least one varactor diode coupled to a first T-shaped conductor portion of the series of T-shaped conductor portions and to the conductive ground plane, and bias control circuitry coupled to the first T-shaped conductor portion, wherein the bias control circuitry is configured to control the at least one varactor diode.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: August 14, 2012
    Assignee: Raytheon Company
    Inventor: Tamrat Akale