Resonant, Discrete Frequency Selective Type Patents (Class 333/175)
  • Publication number: 20120313728
    Abstract: An apparatus for capturing power supply harmonics for use in powering a load, comprising a series resonant circuit coupled between an energy source having a waveform comprising a sinusoidal fundamental frequency and a sinusoidal harmonic, and a load that is not the earth, wherein the series resonant circuit is tuned to the harmonic frequency whereby the energy of the harmonic is directed to the load.
    Type: Application
    Filed: June 10, 2011
    Publication date: December 13, 2012
    Inventor: John Louis Cairo, JR.
  • Publication number: 20120299666
    Abstract: A multilayer filter includes a plurality of mutually coupled resonant circuits provided within a multilayer body. Capacitor internal electrodes, inductor internal electrodes, and inductor via electrodes, ground via electrodes, and input-output via electrodes are arranged within the multilayer body. The ground via electrodes and the input-output via electrodes are provided on a dielectric layer on a mounting surface, or a second dielectric layer on a first dielectric layer provided on the mounting surface. The capacitor internal electrodes arranged towards the side of the mounting surface do not overlap the input-output electrodes when viewed in plan view. With this configuration, degradation in frequency characteristics of a resonant circuit is effectively prevented by controlling one of an inductive component and a capacitive component of the resonant circuit.
    Type: Application
    Filed: August 7, 2012
    Publication date: November 29, 2012
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventor: Koji NOSAKA
  • Publication number: 20120280765
    Abstract: Described herein are improved configurations for providing a stranded printed circuit board trace comprising, a plurality of conductor layers, a plurality of individual conductor traces on each of the said conductor layers, and a plurality of vias for connecting individual conductor traces on different said conductor layers, the vias located on the outside edges of the stranded trace. The individual conductor traces of each layer may be routed from vias on one side of the stranded printed circuit board trace to vias on the other side in a substantially diagonal direction with respect to the axis of the stranded printed circuit board trace. In embodiments, the stranded printed circuit board trace configuration may be applied to a wireless power transfer system.
    Type: Application
    Filed: December 16, 2009
    Publication date: November 8, 2012
    Inventors: Andre B. Kurs, Aristeidis Karalis, Morris P. Kesler, Andrew J. Campanella, Katherine L. Hall, Konrad J. Kulikowski, Marin Soljacic
  • Patent number: 8289103
    Abstract: A high frequency filter includes an inductor, a serial resonance circuit including an inductor and capacitors, a serial resonance circuit including an inductor and capacitors, and a varactor diode connected between a connection point between the capacitor and the capacitor and a connection point between the capacitor and the capacitor. A controller simultaneously changes two attenuation pole frequencies of the filter device by changing a capacitance of the varactor diode.
    Type: Grant
    Filed: November 19, 2007
    Date of Patent: October 16, 2012
    Assignee: Panasonic Corporation
    Inventors: Takehiko Yamakawa, Toshiyuki Okajima, Hiroshi Nakatsuka, Keiji Onishi
  • Patent number: 8289104
    Abstract: In an electronic component, a first LC resonant circuit includes a first coil including coil portions that extend from a first external electrode to a second external electrode while turning in a first direction. A second LC resonant circuit includes a second coil including coil portions that extend from a third external electrode to a fourth external electrode while turning in the first direction. A third LC resonant circuit includes a third coil and a capacitor. The third coil includes coil portions that extend from the capacitor of the third LC resonant circuit to the second external electrode while turning in a second direction opposite to the first direction around the coil portions of the first coil and the second coil.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: October 16, 2012
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Takahiro Mori, Hiroshi Masuda
  • 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: 8264302
    Abstract: A multilayer filter includes a plurality of mutually coupled resonant circuits provided within a multilayer body. Capacitor internal electrodes, inductor internal electrodes, and inductor via electrodes, ground via electrodes, and input-output via electrodes are arranged within the multilayer body. The ground via electrodes and the input-output via electrodes are provided on a dielectric layer on a mounting surface, or a second dielectric layer on a first dielectric layer provided on the mounting surface. The capacitor internal electrodes arranged towards the side of the mounting surface do not overlap the input-output electrodes when viewed in plan view. With this configuration, degradation in frequency characteristics of a resonant circuit is effectively prevented by controlling one of an inductive component and a capacitive component of the resonant circuit.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: September 11, 2012
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Koji Nosaka
  • Patent number: 8264301
    Abstract: There are provided a modeling circuit of a high-frequency device capable of providing a more accurate modeling circuit having a higher-order resonance by dividedly modeling an overlap zone and a non-overlap zone of the high-frequency device, and a modeling method thereof.
    Type: Grant
    Filed: August 20, 2009
    Date of Patent: September 11, 2012
    Assignees: Samsung Electro-Mechanics Co., Ltd., Industry-University Cooperation Foundation Hanyang University
    Inventors: Ill Kyoo Park, Chan Seo Park, Myoung Gyun Kim, Tae Yeoul Yun, Zhe Jun Jin, Hyuk Sun, Young Duk Yoo
  • Publication number: 20120223788
    Abstract: Apparatuses and methods for providing inductance are disclosed. In one embodiment, a method for providing an inductor includes forming an electrical circuit on a substrate, forming a seal ring around the perimeter of the electrical circuit, providing a break in at least one layer of the seal ring, and electrically connecting the seal ring such that the seal ring operates as an inductor.
    Type: Application
    Filed: March 3, 2011
    Publication date: September 6, 2012
    Applicant: SKYWORKS SOLUTIONS, INC.
    Inventors: Fikret Altunkilic, Haki Cebi
  • 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: 8243479
    Abstract: A structure and method for reducing the effects of chip-package resonance in an integrated circuit assembly is described. A series RLC circuit is employed to reduce the output impedance of the power delivery system at the resonance frequency.
    Type: Grant
    Filed: September 19, 2011
    Date of Patent: August 14, 2012
    Assignee: Micron Technology, Inc.
    Inventor: Houfei Chen
  • Patent number: 8237519
    Abstract: Filter design techniques and filters based on metamaterial structures including an extended composite left and right handed (E-CRLH) metamaterial unit cell.
    Type: Grant
    Filed: November 17, 2008
    Date of Patent: August 7, 2012
    Assignee: Rayspan Corporation
    Inventor: Maha Achour
  • Publication number: 20120188027
    Abstract: A band stop filter is provided for a lead wire of an active medical device (AMD). The band stop filter includes a capacitor in parallel with an inductor. The parallel capacitor and inductor are placed in series with the lead wire of the AMD, wherein values of capacitance and inductance are selected such that the band stop filter is resonant at a selected frequency. The Q of the inductor may be relatively maximized and the Q of the capacitor may be relatively minimized to reduce the overall Q of the band stop filter to attenuate current flow through the lead wire along a range of selected frequencies. In a preferred form, the band stop filter is integrated into a TIP and/or RING electrode for an active implantable medical device.
    Type: Application
    Filed: April 5, 2012
    Publication date: July 26, 2012
    Applicant: Greatbatch Ltd.
    Inventors: Henry R. Halperin, Robert A. Stevenson
  • Patent number: 8228140
    Abstract: A device associated with the control of a tractable filter, including: an induction coil having an inductance Ls, and a resistance Rs; a series resistance rseries having a value determined from a parallel resistance of the induction coil, Lo, the inductance at the resonance frequency, ?0 the resonance frequency, and by taking the lowest resistance value and by deducing rseries from R=rseries+Rs.
    Type: Grant
    Filed: December 10, 2007
    Date of Patent: July 24, 2012
    Assignee: Thales
    Inventor: Vincent Jahier
  • Publication number: 20120169434
    Abstract: A filter includes a multilayer body including a plurality of insulator layers stacked on top of one another. Outer electrodes are provided on surfaces of the multilayer body. A first resonator is connected to a first one of the outer electrodes and includes a first coil. A second resonator is connected to a second one of the outer electrodes and includes a second coil. A third resonator includes a third coil that is magnetically coupled with the first and second coils. The first and second coils are respectively defined by coil conductor layers provided on an insulator layer. The third coil is defined by via hole conductors that penetrate through the insulator layer in a z-axis direction.
    Type: Application
    Filed: March 15, 2012
    Publication date: July 5, 2012
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Hiroshi MASUDA, Takahiro MORI
  • Patent number: 8212633
    Abstract: A small low-loss laminated band pass filter attains steep attenuation from a pass band to out-of pass band and reduced ripple in the band. Capacitances are generated between a ground electrode on a ground electrode forming layer and capacitor electrodes on a capacitor electrode forming layer, a plurality of inductor electrodes are defined by via electrodes and the line electrodes, and portions of respective loop surfaces of the inductor electrodes overlap with one another when viewed from a direction of arrangement of the inductor electrodes. Furthermore, a line electrode is arranged on a first line electrode forming layer and line electrodes are arranged on a second line electrode forming layer.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: July 3, 2012
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Tetsuo Taniguchi
  • Publication number: 20120161901
    Abstract: A TANK filter is provided for a lead wire of an active medical device (AMD). The TANK filter includes a capacitor in parallel with an inductor. The parallel capacitor and inductor are placed in series with the lead wire of the AMD, wherein values of capacitance and inductance are selected such that the TANK filter is resonant at a selected frequency. The Q of the inductor may be relatively maximized and the Q of the capacitor may be relatively minimized to reduce the overall Q of the TANK filter to attenuate current flow through the lead wire along a range of selected frequencies. In a preferred form, the TANK filter is integrated into a TIP and/or RING electrode for an active implantable medical device.
    Type: Application
    Filed: February 29, 2012
    Publication date: June 28, 2012
    Applicant: Greatbatch Ltd.
    Inventors: Robert A. Stevenson, Warren S. Dabney, Christine Frysz, Richard L. Brendel
  • Publication number: 20120139663
    Abstract: A Susceptance-Mode Inductor with infinite order resonance cavity which includes an inductor section is formed by a physical inductor coil wound about a permanent magnetic materials, with both ends of the coil connecting to a electric damper and a capacitor of the infinite order resonance cavity; thereby that power is coupled into the incoming end of the infinite order resonance cavity through a radio frequency (RF) radiation electric field and the outgoing end thereof is electrically connected to a set of resonance power storage section, or alternatively the incoming end is connected to electric charge and the outgoing end is connected to the load; accordingly, the resonance of the infinite order resonance cavity, thus allowing to convert the current or electron flow at the magnetic field end into charge output by means of Lorenz force.
    Type: Application
    Filed: December 6, 2010
    Publication date: June 7, 2012
    Inventor: Fu-Tzu HSU
  • Publication number: 20120126888
    Abstract: A circuit includes a first input terminal for receiving a first pulsed voltage and a second input terminal for receiving a second pulsed voltage. The circuit further includes a load and an LC filter. The LC filter includes a coupled inductor pair that includes a first winding and a second winding magnetically coupled to each other. The first winding is coupled between the first input terminal and the load, and the second winding is coupled between the second input terminal and the load. A frequency of a first current flowing through the first winding is increased by the second pulsed voltage applied to the second winding.
    Type: Application
    Filed: January 5, 2012
    Publication date: May 24, 2012
    Inventors: Alexandr Ikriannikov, David Hoffman, Noah A. Wilson
  • Patent number: 8179210
    Abstract: An electrical multilayer component includes a basic body having at least one stack of dielectric layers and electrode layers arranged alternately one above another. The component also includes an electrically non-connected shielding structure.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: May 15, 2012
    Assignee: EPCOS AG
    Inventor: Thomas Feichtinger
  • Publication number: 20120112855
    Abstract: To provide a capacitative device capable of accurately securing a capacitance value, a variable capacitative device capable of sufficiently securing a capacity variability rate, and a resonance circuit that uses the capacitative devices. A capacitative device according to the present invention includes a capacitative device body constituted of a dielectric layer and at least a pair of capacitative device electrodes that sandwich the dielectric layer and cause a desired electric field in the dielectric layer; and stress adjustment portions to adjust a stress caused in the dielectric layer of the capacitative device body.
    Type: Application
    Filed: July 27, 2010
    Publication date: May 10, 2012
    Applicant: SONY CORPORATION
    Inventors: Noritaka Sato, Masayoshi Kanno, Masakazu Yajima
  • Publication number: 20120098621
    Abstract: Integrated circuits are disclosed including at least one inductor-capacitor component, where each of the inductor-capacitor components includes an inductor and a capacitor constructed between the inductor and a substrate. The inductor includes at least one metal loop over a shield pattern forming a first capacitor terminal over patterned oxide layer with a second capacitor layer between the patterned oxide layer and the substrate.
    Type: Application
    Filed: December 29, 2011
    Publication date: April 26, 2012
    Applicant: Qualcomm Atheros, Inc.
    Inventor: Lalitkumar Nathawad
  • Publication number: 20120098620
    Abstract: A filter and a layout structure of the filter are provided. The filter includes a substrate, three capacitors, and three inductors. The three capacitors and the first and second inductors are disposed on a top surface of the substrate. The third inductor is disposed on a lateral surface of the substrate. First electrodes of the first and third capacitors and a first terminal of the first inductor are connected to a first I/O terminal of the filter. A first electrode of the second capacitor, a second electrode of the third capacitor and a first terminal of the second inductor are connected to a second I/O terminal of the filter. A first terminal of the third inductor is connected to second electrodes of the first and second capacitors.
    Type: Application
    Filed: October 2, 2011
    Publication date: April 26, 2012
    Applicant: CYNTEC CO., LTD.
    Inventor: Shih-Hsien Tseng
  • Patent number: 8125299
    Abstract: A filter for use in a coaxial cable network includes a printed circuit board having first and second opposed major surfaces, and first and second opposing sides. The opposed major surfaces are substantially parallel to a single plane, and are bisected by a longitudinal axis. The first and second opposing sides are substantially parallel to the longitudinal axis. The filter further includes an input terminal and an output terminal connected to the printed circuit board. The input terminal and the output terminal have an axis extending substantially parallel to the longitudinal axis. A signal path is disposed on the printed circuit board and extends from the input terminal toward the output terminal. The filter further includes a plurality of resonator elements fabricated upon the first opposed major surface. In one embodiment, the inductor elements are arranged in series along the signal path defining a footprint of less than 540 square millimeters.
    Type: Grant
    Filed: July 10, 2009
    Date of Patent: February 28, 2012
    Assignee: John Mezzalingua Associates, Inc.
    Inventor: Erdogan Alkan
  • Patent number: 8120446
    Abstract: An electronic component includes a layered substrate including a plurality of dielectric layers stacked, and three resonators provided within the layered substrate. One of the three resonators includes resonator-forming conductor layers of a first type and a second type that each have a short-circuited end and an open-circuited end, relative positions of the short-circuited end and the open-circuited end being reversed between the first and second types. The resonator-forming conductor layers of the first type and the second type are arranged to be adjacent to each other in a direction in which the plurality of dielectric layers are stacked.
    Type: Grant
    Filed: October 20, 2008
    Date of Patent: February 21, 2012
    Assignee: TDK Corporation
    Inventors: Shigemitsu Tomaki, Noriaki Ootsuka, Yoshikazu Tsuya, Kazushige Shinoda
  • Patent number: 8115571
    Abstract: A Passive harmonic filter (F) has an input node (B) for connection to a power supply (1), an output node (C) for connection to a load (15, 17) and an intermediate node (A). A first branch (3, 4) located between the input node (B) and the intermediate node (A) has at least one first inductance (4). A second branch (11, 13) located between the intermediate node (A) and the output node (C) has at least one second inductance (11). A third branch (5, 7, 9) is connected to the intermediate node (A) and has at least one capacitor (9). The first, second and third branch thus build a low-pass T-filter. A damping branch (22, 24) is provided having at least one first resistor (22), where the damping branch is arranged in parallel to the first branch.
    Type: Grant
    Filed: November 28, 2008
    Date of Patent: February 14, 2012
    Assignee: Schaffner EMV AG
    Inventors: Andrzej Pietkiewicz, Fabian Beck
  • Patent number: 8115572
    Abstract: Tunable matching network topologies are disclosed. A network in accordance with the present invention comprises at least one inductor, and at least one tunable capacitor, in parallel with the inductor, wherein the at least one tunable capacitor tunes the at least one inductor self-resonant frequency.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: February 14, 2012
    Assignee: Wispry, Inc.
    Inventor: Arthur Sherman Morris, III
  • Publication number: 20120025929
    Abstract: The present invention concerns a bandstop filter for preventing signals of frequencies used for inter-device communications in a television signal distribution system from interfering with a signal source. The filter is designed to work with a signal splitter and reduce the negative impact on inter-device communication through the splitter caused by conventional bandstop filters. The filter adds a section to a bandstop filter to provide a resistive load and high output impedance at the port feeding the splitter largely through the action of a parallel resonant circuit.
    Type: Application
    Filed: December 21, 2009
    Publication date: February 2, 2012
    Inventors: Max Ward Muterspaugh, Daniel Mark Hutchinson, Andrew Eric Bowyer
  • Publication number: 20120025925
    Abstract: A common mode noise suppression circuit applicable to differential signal transmission performs common mode noise suppression with respect to differential signals transmitted by a transmission line. An inductance-capacitance resonant structure is formed based on electromagnetic coupling combining a ground structure to suppress common mode noise of differential mode signals at broadband meanwhile keeping low loss of the differential mode signals at broadband via differential transmission lines. By this, the common mode noise suppression circuit performs broadband suppression with related to the common mode noise within frequency scope of several GHzs without affecting the differential mode signals and improves manufacturing process miniaturization to decrease cost.
    Type: Application
    Filed: October 6, 2010
    Publication date: February 2, 2012
    Applicant: NATIONAL TAIWAN UNIVERSITY
    Inventors: Tzong-Lin Wu, Chung-Hao Tsai, Iat In Ao Ieong
  • Patent number: 8102222
    Abstract: A first passive part forms a second parallel resonance circuit having a resonance frequency near the passing band among a first to a third parallel resonance circuit as follows. That is, the second parallel resonance circuit is formed at a position farthest from a first shield electrode and farthest from a second shield electrode in a region sandwiched by the first shield electrode and the second shield electrode in a dielectric substrate (in this example, on the main surface of a seventh dielectric layer and the main surface of an eighth dielectric layer located at a center portion in the layering direction of the region).
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: January 24, 2012
    Assignee: Soshin Electric Co., Ltd.
    Inventors: Yasuhiko Mizutani, Hitoshi Makino
  • Patent number: 8098116
    Abstract: An LC composite electronic component, having a large noise suppression effect without increasing in size, includes a multilayer structure in which first and second capacitor units (10), (20) and first and second coil units (30), (40) are stacked and incorporates four LC resonance circuits. A noise circulating capacitance (C21) is formed between a coil electrode (31a) and a resonance adjusting electrode (51a), and a noise circulating capacitance (C22) is formed between a coil electrode (31c) and a resonance adjusting electrode (51b). A noise circulating capacitance (C23) is formed between a coil electrode (42a) and a resonance adjusting electrode (53a), and a noise circulating capacitance (C24) is formed between a coil electrode (42c) and a resonance adjusting electrode (53b). A noise circulating capacitance (C25) is formed between lead-out electrodes (32a), (41b), and a noise circulating capacitance (C26) is formed between lead-out electrodes (32d), (41d).
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: January 17, 2012
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Daisuke Tanaka, Haruhiko Ueno
  • Patent number: 8098117
    Abstract: An LC composite component has a unique structure that makes it easy to set frequency characteristics while reducing a circuit area and the number of layers. The LC composite component includes a laminated body including a plurality of dielectric layers. The laminated body is produced by forming input and output electrodes and an LC resonant circuit therein. The LC composite component includes a capacitor, which includes an elongated electrode portion having an elongated shape. The elongated electrode portion faces a flat electrode portion having a flat shape, with one of the dielectric layers interposed therebetween. At the same time, the elongated electrode portion constitutes an open stub that is open at a tip end.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: January 17, 2012
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Yosuke Matsushita
  • Publication number: 20120007694
    Abstract: An electromagnetic field strength reducing device includes a high-frequency wave eliminator that eliminates a high frequency component from an electrical signal input from a signal source. An electrical signal line is disposed between the high-frequency wave eliminator and the electrical member so as to convey the electrical signal with the high frequency component eliminated to an electrical member. The device also includes a resonant-frequency regulator connected between the electrical signal line and ground to cause the electrical signal line to be resonant at a frequency used for radio communication. The electromagnetic field strength reducing device may be employed in a portable electronic device with a HAC standard radio frequency communication compliance requirement, and use a corresponding method to eliminate the high frequency component.
    Type: Application
    Filed: February 22, 2011
    Publication date: January 12, 2012
    Applicant: SONY ERICSSON MOBILE COMMUNICATIONS JAPAN, INC.
    Inventor: Kenichiro KODAMA
  • Publication number: 20110317460
    Abstract: A control system for controlling a multiphase power converter includes a current control module, a voltage control module and a current command selector. The current control module generates grid voltage command signals for the multiphase power converter and the voltage control module generates reference converter current command signals for the current control module. The current command selector supplies active and reactive current command signals from a supervisory controller to the current control module when the multiphase power converter is connected to the grid and supplies the reference converter current command signals to the current control module when the multiphase power converter is unconnected to the grid.
    Type: Application
    Filed: June 28, 2010
    Publication date: December 29, 2011
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Luis José Garcés Rivera, Ruediger Soeren Kusch, Chunchun Xu
  • Patent number: 8081048
    Abstract: A technique for realizing module size reduction while enhancing the anti-ESD characteristic of a low frequency band circuit without the need to add such an element as an ESD filter. In a diplexer included in a high-frequency power amplifier module, a composite grounding inductor with respect to an antenna terminal is formed of three inductors including a series inductor contained in a lowpass filter. Since an ESD signal contains main components thereof belonging to a frequency band of the order of a few hundreds of MHz or lower, the ESD signal is allowed to pass through a lowpass filter with little to no attenuation. Under this condition, a function for ESD filtering from the antenna terminal to an antenna switch circuit is provided by using the composite grounding inductor mentioned above and an electrostatic capacitor element, thereby suppressing passage of the ESD signal to the antenna switch circuit.
    Type: Grant
    Filed: May 29, 2009
    Date of Patent: December 20, 2011
    Assignee: Renesas Electronics Corporation
    Inventor: Hiroshi Okabe
  • Publication number: 20110304410
    Abstract: A filter circuit having two pass bands includes first and second bandpass filters which are connected in parallel with each other. Each of the bandpass filters includes at least a resonator group composed of a plurality of resonators arranged in orderly sequence so as to be coupled to each other to form a pass band, an input terminal coupled to a resonator on an input stage, and an output terminal coupled to a resonator on an output stage. The resonator group is composed of at least one of one or more quarter-wavelength resonators and one or more half-wavelength resonators. The resonator group of at least one of the first bandpass filter and the second bandpass filter includes both one or more quarter-wavelength resonators and one or more half-wavelength resonators.
    Type: Application
    Filed: February 17, 2010
    Publication date: December 15, 2011
    Applicant: KYOCERA CORPORATION
    Inventors: Hiromichi Yoshikawa, Hiroshi Ninomiya, Masafumi Horiuchi
  • Publication number: 20110298562
    Abstract: A high-frequency circuit according to one embodiment of the present invention includes a plurality of transistors, a plurality of input matching circuits, a plurality of output matching circuits, a plurality of resistors, and low-frequency oscillation suppressing circuits. The transistors are arranged on a substrate in parallel. The input matching circuits and output matching circuits are arranged on insulating substrates and connected to the transistors. The oscillation suppressing circuits are a circuit configured by a filter circuit having a desired transmission band and a resistor, and are connected to gate terminals of transistors located on both sides of the transistors, respectively. Each of resistors is formed to include a position closest to the transistor between the input matching circuits and between the output matching circuits. Furthermore, each of resistors has a length at which the oscillation suppressing circuit can suppress oscillation at the lowest frequency in the transmission band.
    Type: Application
    Filed: January 19, 2011
    Publication date: December 8, 2011
    Applicant: Kabushiki Kaisha Toshiba
    Inventor: Kazutoshi MASUDA
  • Patent number: 8064843
    Abstract: An electrical component includes a first signal path and a second signal path electrically connected to a common signal path. The electrical component also includes a first filter in the first signal path and a second filter in the second signal path. The electrical component also includes a first matching circuit comprising a shunt arm to ground. The first matching circuit is electrically connected to the first signal path, the second signal path, and the common signal path.
    Type: Grant
    Filed: September 1, 2006
    Date of Patent: November 22, 2011
    Assignee: EPCOS AG
    Inventors: Luigi Rosetti, Juergen Kiwitt, Maximilian Pitschi, Andreas Fleckenstein, Andreas Przadka
  • Publication number: 20110279196
    Abstract: A low-pass filter includes an integrator having an adjustable unity frequency. The integrator includes a first input, first output and feedback loop between the first input and output of the integrator. The first input is connected to a branch that includes a first impedance, to which is applied a first input voltage of the low-pass filter. The feedback loop includes a second impedance and the first output of the integrator is the first output of the low-pass filter.
    Type: Application
    Filed: April 18, 2011
    Publication date: November 17, 2011
    Applicant: STMicroelectronics SA
    Inventor: Jean-Pierre Blanc
  • Patent number: 8058950
    Abstract: A highly selective frequency filter is created from lossy components such as found in standard integrated circuit technologies, including particularly CMOS technologies, without the use of active loss cancellation circuitry. The filter configuration is based on using inductively coupled planar inductors for introducing a mutual inductance factor that advantageously alters the frequency response of the filter.
    Type: Grant
    Filed: April 14, 2008
    Date of Patent: November 15, 2011
    Inventor: Daniel Senderowicz
  • Publication number: 20110267119
    Abstract: A phase shifter includes a low-pass filter, a high-pass filter, and an all-pass filter coupled in series between an RF input terminal and an RF output terminal of the phase shifter, at least one of the filters being tunable, controlling the phase of an input signal over a wide range of frequencies.
    Type: Application
    Filed: May 3, 2011
    Publication date: November 3, 2011
    Inventors: Michael Koechlin, Cemin Zhang
  • Publication number: 20110241618
    Abstract: In embodiments of the present invention improved capabilities are described for methods and systems for wireless power transmission utilizing high-Q resonators, where the resonators may resonate with an unmodulated carrier frequency, may be formed in a loop of conducting ribbon, may include an efficiency monitor, may provide for varying the amount of power transferred wirelessly, and applies a magnetic resonance phenomenon between a source and destination side resonator.
    Type: Application
    Filed: June 17, 2011
    Publication date: October 6, 2011
    Inventors: Aristeidis Karalis, Andre B. Kurs, Robert Moffatt, John D. Joannopoulos, Peter H. Fisher, Marin Soljacic
  • Publication number: 20110241798
    Abstract: Provided are a resonator and a filter performing a filtering operation by using the resonator. The filter includes a first resonation unit connected in series to an input terminal and having a first resonant frequency, a filtering unit connected in series to the first resonation unit to filter a signal inputted through the input terminal, a second resonation unit connected in series between the filtering unit and an output terminal and having a second resonant frequency, a first zero-order resonation unit connected in parallel to a connection terminal between the input terminal and the first resonation unit and having a first zero-order resonant frequency equal to the first resonant frequency, and a second zero-order resonation unit connected in parallel to a connection terminal between the output terminal and the second resonation unit and having a second zero-order resonant frequency equal to the second resonant frequency.
    Type: Application
    Filed: March 24, 2011
    Publication date: October 6, 2011
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Ju-Yeon HONG, Jeong-Ho Ju, Dong-Ho Kim, Young-Jun Chong, Wangjoo Lee, Jae-Ick Choi
  • Publication number: 20110234336
    Abstract: A high power, low passive inter-modulation capacitor is presented, which is formed using metal clad substrates, which are broad-side coupled through a thin air gap. Each substrate may include metal layers affixed on both sides which are electrical coupled together to form a single capacitor plate, or each substrate may have only a single metal layer on the surface adjacent to the air gap. The capacitor has particular application in low cost RF and microwave filters, which may be used in communication equipment and communication test equipment such a diplexers, for low PIM applications.
    Type: Application
    Filed: March 16, 2011
    Publication date: September 29, 2011
    Applicant: Delaware Capital Formation, Inc.
    Inventor: Rafi Hershtig
  • Publication number: 20110234337
    Abstract: In a filter circuit, first and second coils are connected to first and second communication lines, respectively. At a secondary side of the first and second coils, first and second capacitors are connected in series between the first and second communication lines. At a primary side of the first and second coils, third and fourth capacitors are connected in series between the first and second communication lines. A connection node between the first and second capacitors is grounded. A connection node between the third and fourth capacitors is grounded. The first and second coils are adjacently arranged in order to have a reversed polarity to each other. The filter circuit having the above structure works as a n-type filter capable of eliminate both common mode noise and normal mode noise. The filter circuit can eliminate noise caused by the first and second coils.
    Type: Application
    Filed: March 24, 2011
    Publication date: September 29, 2011
    Applicants: Nippon Soken, Inc., DENSO CORPORATION
    Inventors: Takashi Saitou, Akira Takaoka, Hideki Saito, Nobuya Watabe, Tomohiro Kuno
  • Publication number: 20110235557
    Abstract: The present application describes a radio frequency band reject filter including an input port, an output port, a plurality of acoustic resonators and an inductor for matching the impedance of the plurality of acoustic resonators. The inductor is positioned within the band reject filter in respect of the plurality of acoustic resonators such that a static capacitance between the input port and the inductor is substantially equivalent to a static capacitance between the output port and the inductor. The plurality of acoustic resonators may be a plurality of parallel resonators, a plurality of series resonators or a combination of series and parallel resonators. The radio frequency band reject filter is fabricated using any of surface acoustic wave (SAW) technology, thin film bulk acoustic resonator (FBAR) technology, and bulk acoustic wave (BAW) technology.
    Type: Application
    Filed: November 2, 2009
    Publication date: September 29, 2011
    Applicant: NORTEL NETWORKS LIMITED
    Inventor: Chun-Yun Jian
  • Patent number: 8026778
    Abstract: An LC composite component capable of reducing an overall size while keeping a Q-value of a resonator at a high level and increasing coupling flexibility of resonators includes two capacitor electrodes and two input/output terminal electrodes extending therefrom provided on a first dielectric layer. A ground electrode and another capacitor electrode are provided on second and sixth dielectric layers, respectively. Two substantially linear line electrodes are provided on a third dielectric layer. Two substantially U-shaped line electrodes are provided on a fourth dielectric layer. Two substantially crank-shaped line electrodes are provided on a fifth dielectric layer. Six via electrodes arranged to connect ends of respective line electrodes are provided on the third, fourth, and fifth dielectric layers. These via electrodes and line electrodes constitute electrodes of a double helix structure.
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: September 27, 2011
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Tetsuo Taniguchi
  • Patent number: 8022575
    Abstract: Exemplary embodiments of the present disclosure provide a method and controller for damping multimode electromagnetic oscillations in electric power systems which interconnect a plurality of generators and consumers. The controller for damping such oscillations includes a phasor measurement unit (PMU) and a power oscillation damper (POD) controller. Each oscillating mode signal is damped and then superposed to derive a control signal. A feedback controller is used to feedback the control signal to a power flow control device in the power system.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: September 20, 2011
    Assignee: ABB Research Ltd
    Inventors: Petr Korba, Mats Larsson
  • Patent number: 8022789
    Abstract: A tuning arrangement for a resonant circuit, the tuning arrangement having an output reactance dependent upon a plurality of input applied signals one of which is an input tuning signal, and including: an array of tuning circuits connected in a network whose output reactance is used to control the resonance frequency of the resonant circuit, each tuning circuit having a control input and having a reactance which varies in dependence upon the value of a control signal applied to the control input; elements for generating a plurality of different control signals for application to the control inputs of the tuning circuits; and each such control signal varying substantially linearly with the input tuning signal throughout a predetermined range specific to that control signal, so that the frequency response of the resonant circuit to the input tuning signal is substantially linear throughout a desired range of the input tuning signal.
    Type: Grant
    Filed: October 17, 2005
    Date of Patent: September 20, 2011
    Inventor: George Hedley Storm Rokos
  • Patent number: 8023293
    Abstract: A structure and method for reducing the effects of chip-package resonance in an integrated circuit assembly is described. A series RLC circuit is employed to reduce the output impedance of the power delivery system at the resonance frequency.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: September 20, 2011
    Assignee: Micron Technology, Inc.
    Inventor: Houfei Chen