Patents Examined by Gerald Stevens
  • High-frequency member assembly with waveguide
    Patent number: 8330563
    Abstract: A high-frequency member assembly has two high-frequency members of which surfaces are attached to each other. Each member has a rectangular waveguide hole penetrating through the member and two choke grooves opened on the attaching surface. The waveguide holes communicate with each other to form a rectangular waveguide. An electromagnetic wave is transmitted through the waveguide. Each choke groove extends straight along a side of an end of the waveguide hole opened on the attaching surface to be away from the end of the waveguide hole by one quarter of the wavelength of the wave. The depth of each choke groove is equal to one quarter of the wavelength. The choke grooves of one member communicate with the choke grooves of the other member to substantially surround the waveguide with the choke grooves in an attaching area between the member.
    Type: Grant
    Filed: January 8, 2009
    Date of Patent: December 11, 2012
    Assignee: Denso Corporation
    Inventor: Akihisa Fujita
  • Radio frequency filter
    Patent number: 8330554
    Abstract: Parameters of a radio frequency filter can be changed by changing structure of each component of the filter. Material of each component, diameters of each of magnetic cylinders, density of each of conductive coils, thickness of a dielectric layer, and thickness of an insulation tube can be changed. When any component needs to be replaced, each cover is rotated, with connection partitions move to two slots of a resisting portion, to detach the filter.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: December 11, 2012
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventors: Shen-Chun Li, Shou-Kuo Hsu, Yung-Chieh Chen, Hsien-Chuan Liang
  • Variable resonator, tunable filter, and electric circuit device
    Patent number: 8330562
    Abstract: A variable resonator that comprises a loop line (902) to which two or more switches (903) are connected and N variable reactance means (102) (N?3), in which switches (903) are severally connected to different positions on the loop line (902), the other ends of the switches are severally connected to a ground conductor, and the switches are capable of switching electrical connection/non-connection between the ground conductor and the loop line (902), the variable reactance blocks (102) are severally settable to the same reactance value, and the variable reactance blocks (102) are electrically connected to the loop line (902) as branching circuits along the circumference direction of the loop line (902) at equal electrical length intervals.
    Type: Grant
    Filed: January 4, 2012
    Date of Patent: December 11, 2012
    Assignee: NTT DoCoMo, Inc.
    Inventors: Kunihiro Kawai, Hiroshi Okazaki, Shoichi Narahashi
  • Cavity filter, an isolation device, and a node in a mobile communications network
    Patent number: 8330561
    Abstract: The invention relates to a cavity filter comprising at least one tuning conductor (3) presenting a hollow portion (4), an isolation device (6) for a tuning conductor (3) of a cavity filter, and a node in a mobile communications network, comprising a cavity filter. According to the invention, the tuning conductor (3) comprises an isolation device (6) in a non-conductive material, which isolation device (6) is at least partly inserted into the hollow portion (4), and an insertion element (7) in a conductive material presenting a male thread (7a) that is engaged with an inner surface of the isolation device (6).
    Type: Grant
    Filed: February 24, 2006
    Date of Patent: December 11, 2012
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventor: Lennart Schön
  • Variable resonator, tunable bandwidth filter, and electric circuit device
    Patent number: 8324988
    Abstract: A variable resonator that comprises a loop line (902) to which two or more switches (903) are connected and N of reactance circuits (102) (N?3), in which switches (903) are severally connected to different positions on the loop line (902), the other ends of the switches are severally connected to a ground conductor, and the switches are capable of switching electrical connection/non-connection between the ground conductor and the loop line (902), the reactance circuits (102) severally have the same reactance value, the loop line (902) has a circumference corresponding to one wavelength or integral multiple thereof at a resonance frequency corresponding to each reactance value of each reactance circuit, and the reactance circuits (102) are electrically connected to the loop line (902) as branching circuits along the circumference direction of the loop line (902) at equal electrical length intervals.
    Type: Grant
    Filed: February 21, 2008
    Date of Patent: December 4, 2012
    Assignee: NTT DoCoMo, Inc.
    Inventors: Kunihiro Kawai, Hiroshi Okazaki, Shoichi Narahashi
  • Re-entrant resonant cavities and method of manufacturing such cavities
    Patent number: 8324989
    Abstract: A re-entrant resonant cavity 12 includes a first metallized molded plastic component 18, which comprises a re-entrant stub 17, an end wall 14 and a cylindrical side wall 13. The component 18 is surface mount soldered to a metallized PCB substrate 19. A rostrum 24 is located facing the end face 21 of the stub 17 to define a capacitive gap 22 with it. The end face 21 of the stub 17 and the rostrum 24 are configured such that relative rotation between them changes the profile of the gap 22 and hence the gap capacitance. By suitably locating the two parts during manufacture, a particular capacitance may be chosen to give a desired resonance frequency from a selection available depending on the relative angular position of the stub 17 and rostrum 24. In another cavity, the rostrum is replaced by an etched metallization layer of a printed circuit board.
    Type: Grant
    Filed: September 20, 2006
    Date of Patent: December 4, 2012
    Assignee: Alcatel Lucent
    Inventor: Jan Hesselbarth
  • Multiband filter
    Patent number: 8305161
    Abstract: A band-stop filter is proposed which is constructed on a multilayered substrate and consists of a parallel circuit comprising a bandpass filter and a high-pass filter. The two filters are at least partly realized in the form of LC-elements integrated into the substrate. Further circuit components can be arranged as discrete components on the substrate. In the filter branch having the bandpass filter, an electroacoustic resonator is arranged in a transverse branch to ground. By means of the filter, a wide stop band is obtained, while the passband or passbands can comprise a plurality of radio bands.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: November 6, 2012
    Assignee: Epcos AG
    Inventors: Thomas Bauer, Andreas Przadka
  • Rolled resonant element
    Patent number: 8299874
    Abstract: A material including a conductor may be rolled to form a resonant element.
    Type: Grant
    Filed: July 25, 2008
    Date of Patent: October 30, 2012
    Inventors: Roderick A. Hyde, John Brian Pendry, David Schurig, David R. Smith, Clarence T. Tegreene, Thomas Allan Weaver
  • Variable resonator, variable bandwidth filter, and electric circuit device
    Patent number: 8294537
    Abstract: A variable resonator includes a ring-shaped conductor line (2) which is provided on a dielectric substrate (5) and has a circumferential length of a wavelength at a resonance frequency or an integral multiple of the wavelength, and at least two circuit switches (31, 32), wherein the circuit switches (31, 32) have one ends (31) electrically connected to the ring-shaped conductor line (2) and the other ends (32) electrically connected to a ground conductor (4) formed on the dielectric substrate (5), electrical connection/disconnection between the ground conductor (4) and ring-shaped conductor line (2) can be switched, and the one ends (31) of the circuit switches (31, 32) are connected to the ring-shaped conductor line (2) on different portions.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: October 23, 2012
    Assignee: NTT DoCoMo, Inc.
    Inventors: Kunihiro Kawai, Hiroshi Okazaki, Shoichi Narahashi
  • Electronic component
    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
  • Antenna feed device
    Patent number: 8283998
    Abstract: An antenna feed device (100) having a first waveguide (102) and a second waveguide (104) separated from the first waveguide (102), each of which is assigned to feed one polarization of a dedicated antenna and each of said waveguides exhibit an overall L-shape form where at least one section of the L-shape of each waveguide is in parallel to the other, both having respectively a first (106) and a second (108) antenna end ending in one plane for connection to an ortho-mode transducer associated with the antenna, while the other sections of the two L-shape waveguides extend in opposite directions, having respectively a first (110) and a second (112) radio end, each of which ends with a single waveguide port for connection to a radio equipment and the waveguides arrangement yields an overall compact T-shape interconnection of the antenna and the radios dedicated to the orthogonal polarizations.
    Type: Grant
    Filed: February 1, 2007
    Date of Patent: October 9, 2012
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Uwe Rosenberg, Ulrich Mahr, Jurgen Ebinger
  • Apparatus for bucket cover plate retention
    Patent number: 8277191
    Abstract: In one embodiment, a system includes a turbine engine that includes a turbine stage including a turbine rotor having multiple blades disposed in a first annular arrangement. The turbine engine also includes multiple cover plates disposed in a second annular arrangement along interfaces between the turbine rotor and the blades. The turbine engine further includes multiple lugs coupled to the turbine stage and a first ring coupled to the lugs to hold the cover plates to the turbine stage.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: October 2, 2012
    Assignee: General Electric Company
    Inventor: Luke J. Ammann
  • Band-pass filter, high-frequency component, and communication apparatus
    Patent number: 8269581
    Abstract: A band-pass filter according to the present invention includes two or more resonant lines arranged side by side in a direction orthogonal to a laminating direction in a laminate substrate formed by laminating plural dielectric layers. Each of the resonant lines has a first coil pattern portion formed in the dielectric layers and a second coil pattern portion formed in the dielectric layers different from the dielectric layers in which the first coil pattern portion is formed. The first and second coil pattern portions are connected in series and formed in a spiral shape. At least one of the first and second coil pattern portions is formed as parallel lines in the plural dielectric layers. According to such a configuration, a band-pass filter that is reduced in size and reduced in loss is provided.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: September 18, 2012
    Assignee: Hitachi Metals, Ltd.
    Inventors: Keisuke Fukamachi, Shigeru Kemmochi
  • Resonator, substrate having the same, and method of generating resonance
    Patent number: 8264305
    Abstract: A resonator having respective electrode planes of first and second internal electrodes disposed so as to be substantially parallel to a line of magnetic force of a magnetic field. In the resonator, respective electrode planes of first and second external electrodes are disposed so as to be substantially parallel to the line of magnetic force of the magnetic field in planes different from the electrode planes of the first and second internal electrodes.
    Type: Grant
    Filed: June 15, 2010
    Date of Patent: September 11, 2012
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Atsushi Toujo
  • Multilayer resonator and multilayer filter
    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
  • Band-pass filter
    Patent number: 8253515
    Abstract: A band-pass filter includes an input portion inputting an electromagnetic signal, an output portion outputting the electromagnetic signal, a plurality of transmission portions electrically connecting the input portion and the output portion to transmit the electromagnetic signal therebetween, and a pair of coupling members each shaping the frequency of the band-pass filter. Each of the coupling members includes a first coupling portion electrically connecting two of the transmission portions and a second coupling portion electrically connecting the first coupling portion. The first coupling portion includes a pair of parallel coupling microstrip lines of the same size. The second coupling portion includes a pair of transmission lines of different sizes.
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: August 28, 2012
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Ming-Hsien Hsu
  • Filter
    Patent number: 8248187
    Abstract: A filter includes: a container; at least one barrier, an input device and an output device. The at least one barrier divide the space of the container into at least two resonant cavities. Each resonant cavity has a harmonic oscillator disposed therein. The harmonic oscillators includes a supporter and a carbon nanotube structure disposed on a surface of the supporter.
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: August 21, 2012
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Wen-Hua Chen, Zheng-He Feng, Ping-Yang Chuang
  • Low-pass filter
    Patent number: 8248189
    Abstract: A low-pass filter includes an input portion inputting an electromagnetic signal, an output portion outputting the electromagnetic signal, a high impedance transmission portion electrically connecting the input portion and the output portion to transmit the electromagnetic signal therebetween, and a pair of low impedance transmission members arranged on opposite sides of the high impedance transmission portion. Each of the low impedance transmission members electrically connects the input portion, the output portion, and the high impedance transmission portion, and includes a first low impedance transmission portion and a second low impedance transmission portion. A width of the first low impedance transmission portion is different from that of the second low impedance transmission portion.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: August 21, 2012
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventors: Hsin-Ping Chen, Kuang-Wei Cheng
  • Method and device for optimising the adjustment time of an adjustable filter
    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
  • Integrated guide vane assembly
    Patent number: 8221071
    Abstract: An integrated outlet guide vane assembly for turbomachinery typically includes at least one outlet guide vane and at least one bifurcation having a leading edge and a trailing edge. The turbomachinery has a central axis of rotation and a defined direction of rotation about the axis. The guide vane comprises an airfoil having a leading edge and a trailing edge and has a non-zero angle of lean in the direction of rotation and a non-zero sweep angle relative to a line perpendicular to the central axis. The leading edge of the bifurcation has a non-zero angle of lean in the direction of rotation and a non-zero sweep angle relative to a line perpendicular to the central axis. The trailing edge of the vane is faired into the leading edge of the bifurcation.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: July 17, 2012
    Assignee: General Electric Company
    Inventors: John P. Wojno, Ian Francis Prentice, Manampathy Giridharan