Waveguide Elements And Components Patents (Class 333/248)
  • Patent number: 7692125
    Abstract: An apparatus includes a radome and an evanescent wave-coupled windowing system in the radome. In operation, the apparatus receives radiation reflected from an object that is incident upon a windowing system; emits evanescent waves from the windowing system whose amplitudes are proportional to the angle of incidence of the radiation; and non-coherent, Fresnel direction finds the object.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: April 6, 2010
    Assignee: Lockheed Martin Corporation
    Inventor: Brett A. Williams
  • Patent number: 7680464
    Abstract: An RF interconnection between RF Printed Wiring Boards (PWBs) includes a waveguide transmission line coupled between the RF PWBs. The waveguide feeds are provided as integral parts of each PWB. In one embodiment, the waveguide interconnecting the PWBs is provided as an integral part of a support structure which supports the PWBs. By providing the interconnecting waveguide and the feeds at each end of the waveguide as integral pieces of other already existing structures, a reliable, low cost RF interconnection between RF PWBs having relatively few separate pieces is provided.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: March 16, 2010
    Assignee: Valeo Radar Systems, Inc.
    Inventors: Joseph S. Pleva, Richard P. Donovan, Stephen P. Leblanc
  • Publication number: 20100060391
    Abstract: The invention relates to a microwave waveguide element for matching a standard waveguide input port (31) to an enlarged waveguide output port (37). In the waveguide element, a plurality of intermediate waveguide segments (B-E) is cascaded in the propagation direction of the microwave energy to first split the waveguide element into two symmetrical waveguide branches (34,36:34?,36?) and then combine the branches at the output port (37). Thus, the width of the waveguide element is gradually enlarged and the input port is matched to the output port. The intermediate waveguide segments are preferably dimensioned such that respective characteristic impedances are approximately matched with each other for the fundamental mode.
    Type: Application
    Filed: September 14, 2009
    Publication date: March 11, 2010
    Applicant: RAUTE OYJ
    Inventors: Pete Ristola, Jaakko Vilo, Jerzy Piotrowski
  • Patent number: 7663452
    Abstract: A ridge-waveguide filter with a signal input port at a first end and a signal output port at a second end contains a cascade assembly of metal-bounded ridge-waveguide sections with interspersed metal-bounded evanescent-mode coupling regions, and also contains low-loss ridge-waveguide port coupling networks to impedance-match the ends of the assembly to respective signal-port reference impedances. A frequency multiplexer with a composite-signal port and a plurality of channeled-signal ports is composed of a plurality of ridge-waveguide filters that are series-connected through a ridge-waveguide manifold containing a multiplicity of three-way waveguide junctions and quasi-lumped waveguide elements.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: February 16, 2010
    Assignee: The United States of America as represented by the Secertary of the Navy
    Inventor: Christen Rauscher
  • Publication number: 20100026423
    Abstract: A waveguide includes a first waveguide member and a second waveguide member. The second waveguide member is combined with the first waveguide member to form a through hole. The first waveguide member includes a first shell and two first wing portions connected to the first shell, and the two first wing portions form a first plane. The second waveguide member includes a second shell and two second wing portions connected to the second shell, and the two second wing portions form a second plane. Bulged strips are formed at the inner rims of the second plane neighboring the through hole and extend along a longitudinal direction of the through hole, and the bulged strips protrude the second plane.
    Type: Application
    Filed: December 11, 2008
    Publication date: February 4, 2010
    Applicant: MICROELECTRONICS TECHNOLOGY INC.
    Inventors: TUNG YI KO, CHIH JUNG LIN
  • Publication number: 20100019872
    Abstract: A device includes a device wafer having a circuit component formed thereon and having vias formed therein and a cap wafer bonded to the device wafer. The cap wafer has a cavity therein. The cavity has a post formed therein, and the post is positioned to mechanically support the vias formed in the device wafer. The cavity has a volume, the volume substantially enclosing the circuit component formed on the device wafer. The cavity has a width and height such that an impedance of a transmission line is dependent upon the width and height of the cavity, or the impedance of a transmission line is dependent upon the width of a center conductor within the cavity.
    Type: Application
    Filed: June 11, 2007
    Publication date: January 28, 2010
    Inventors: Carl O. Bozler, Jeremy Muldavin, Peter W. Wyatt, Craig L. Keast, Steven Rabe
  • Patent number: 7612638
    Abstract: A waveguide in semiconductor integrated circuit is disclosed, the waveguide comprises a horizontal first metal plate, a horizontal second metal plate above the first metal plate, separated by an insulation material, and a plurality of metal vias positioned in two parallel lines, running vertically through the insulation material in contacts with both the first and second metal plates, wherein the first and second metal plates and the plurality of metal vias form a metal enclosure in a cross-sectional view that can serve as a waveguide.
    Type: Grant
    Filed: July 14, 2006
    Date of Patent: November 3, 2009
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Shine Chung, Fu-Lung Hsueh
  • Patent number: 7606592
    Abstract: The design and use of a simplified, highly efficient, waveguide-based wireless distribution system are provided. A low-loss waveguide is used to transport wireless signals from a signal source or sources to one or more receiver locations. One or more adjustable signal coupling devices partially insert into the waveguide at predetermined locations along the length of the system to provide variable, controlled extraction of one or more wireless signals. Low-loss impedance matching circuitry is provided between the waveguide coupling devices and output connectors to maintain high system efficiency. The system offers the capability of supplying signals of high strength and high quality to a large number of receivers in a wide wireless coverage area via a plurality of signal radiators. Some embodiments of the system are readily adaptable for wireless distribution service in HVAC plenum spaces. A system that combines the functions of fire extinguishing and waveguide wireless distribution is also disclosed.
    Type: Grant
    Filed: September 14, 2006
    Date of Patent: October 20, 2009
    Inventor: Charles D. Becker
  • Patent number: 7598732
    Abstract: A waveguide driving circuit for generating a current pulse in a waveguide includes a voltage source for providing a direct voltage, a choke the first terminal of which is coupled to a first terminal of the voltage source, a first switch the first terminal of which is coupled to a second terminal of the choke and the second terminal of which is coupled to a second terminal of the voltage source, the waveguide the first terminal of which at a first waveguide end is coupled to the first terminal of the first switch and the second terminal of which at the first waveguide end is coupled to a second terminal of the voltage source, and a controller implemented to open and close the first switch, to generate a current pulse at the terminals of the waveguide at the first waveguide end.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: October 6, 2009
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Michael Hackner, Elmar Herzer
  • Publication number: 20090224858
    Abstract: Long-side length a1 to a5 of rectangular waveguide tubes in a long-side direction (magnetic field direction) become greater, the shorter a line length is (the closer a rectangular waveguide tube is to the center). ai and Li are set such that line lengths L1 to L5 of each rectangular waveguide tube is Li=m?gi (i=1 to 5, and m is a positive integer number), with guide wavelengths of each rectangular waveguide tube, determined by the length a1 to a5, as ?g1 to ?g5. Hence, the line length Li of each rectangular waveguide tube can be arbitrarily set, while maintaining a phase relationship between high frequency signals transmitted by each rectangular waveguide tube. When a difference in line lengths between rectangular waveguide tubes is set to be shorter, the degree of freedom in arrangement of the rectangular waveguide tubes can be improved while suppressing the degradation of propagation characteristics caused by temperature change.
    Type: Application
    Filed: March 6, 2009
    Publication date: September 10, 2009
    Applicant: DENSO CORPORATION
    Inventor: Akihisa Fujita
  • Patent number: 7567149
    Abstract: A waveguide structure is described wherein microwaves or radio-frequency waves can be guided in their propagation through channels whose cross-sections contain fractal patterns, with relevant dimensions much smaller than the wavelengths of the guided waves. A finite section of such waveguide can be used as an efficient delay line.
    Type: Grant
    Filed: April 5, 2006
    Date of Patent: July 28, 2009
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Weijia Wen, Ping Sheng, Che Ting Chan, Lei Zhou, Bo Hou
  • Patent number: 7564190
    Abstract: A light source device comprises a waveguide, an electrodeless lamp, a probe, and conversing means. The waveguide is formed to contain a medium enabling a microwave to resonate and has a surface and an aperture cavity with an aperture opened at a predetermined position of the surface. The electrodeless lamp is loaded in the aperture cavity in a state where part of the electrodeless lamp is protruded from the surface of the waveguide so that the part of the electrode lamp emits light in response to applying the microwave to the electrodeless lamp. The probe supplies a high-frequency signal to the waveguide so that the high-frequency signal is converted to the microwave in the waveguide. The converging means is disposed on the surface of the waveguide to face the aperture cavity and utilizes all the light emitted from the part of the electrodeless lamp to converge the light.
    Type: Grant
    Filed: June 8, 2007
    Date of Patent: July 21, 2009
    Assignee: Victor Company of Japan, Ltd.
    Inventor: Ryusaku Takahashi
  • Patent number: 7555835
    Abstract: A method of fabricating a monolithic microwave integrated circuit (MMIC) with one or more coupling transmission structures protruding from the MMIC includes providing a support substrate, providing a wafer containing a face side, a back side, and a plurality of individual MMICs disposed on the face side, and providing a material for holding the wafer on the support substrate. The method further includes applying the material and placing the wafer on to the support substrate so as the face side is disposed on the support substrate and the material is disposed between the face side and the support substrate. In addition, the method includes performing a disjoin process wherein the plurality of individual MMICs are disjoined from the wafer with the one or more coupling transmission structures protruding from the plurality of individual MMICs, the one or more coupling transmission structures being supported by at least a portion of the face side of the wafer.
    Type: Grant
    Filed: February 14, 2007
    Date of Patent: July 7, 2009
    Assignee: HRL Laboratories, LLC
    Inventors: Debabani Choudhury, Adele E. Sohmitz
  • Patent number: 7551042
    Abstract: A microwave pulse compressor has an elongated, cross-sectionally oversized waveguide resonator for decreasing the attenuation of the resonator, thereby increasing the resonator's QO The increased Q of the resonator guide results in more stored energy and greater output pulse power. The pulse compressor is constructed to suppress high order modes that can be generated in oversized waveguides. The higher order modes are suppressed by any means, including, separately or in combination, the input coupling design, choice of the resonator length, and the design of the output coupling structures. In one alternative aspect of the invention, the switch at the switch-out end of the waveguide resonator is a plasma switch, employing at least one dielectric window positioned in the resonator guide to have minimum effect on the resonator Q. The dielectric window contains a relatively large volume of a switch gas at low pressure within a switching section of the resonator guide at the guide's switch-out end.
    Type: Grant
    Filed: June 5, 2007
    Date of Patent: June 23, 2009
    Inventor: Ray M. Johnson
  • Patent number: 7545242
    Abstract: Various embodiments of the present invention are directed to global interconnects that employ metamaterial-based waveguides to distribute clock signals to IC internal components. In one embodiment of the present invention, a global interconnect includes an electromagnetic radiation source that radiates electromagnetic waves. The global interconnect also includes a metamaterial-based waveguide that directs a transverse magnetic field mode of the electromagnetic wave to antennae of the internal components in order to induce an oscillating current within the internal components that serves as the clock signal.
    Type: Grant
    Filed: November 1, 2005
    Date of Patent: June 9, 2009
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Raymond G. Beausoliel, Alexandre M. Bratkovski
  • Patent number: 7541886
    Abstract: In order to realize with a low loss a hybrid structure in which an NRD guide is used for a transmission part and a microstrip line is used for a circuit element loading part, the present device includes: a dielectric waveguide (1) which is sandwiched between parallel conductor plates and has a gap which is less than a ½ wavelength; a microstrip line (4) which is provided on a side surface of a metal rod (3) opposite to the dielectric waveguide (1), the metal rod (3) being adjacently arranged in parallel with the dielectric waveguide (1); and a coaxial line (5) which pierces the metal rod (3) and connects the dielectric waveguide (1) with the microstrip line (4).
    Type: Grant
    Filed: May 17, 2004
    Date of Patent: June 2, 2009
    Assignee: Intelligent Cosmos Research Institute
    Inventors: Tsukasa Yoneyama, Futoshi Kuroki, Hirokazu Sawada
  • Patent number: 7538640
    Abstract: A waveguide and an attenuation pole waveguide bandpass filter with a simple structure without any additional structure such as a negative cross coupling between resonators. The attenuation pole waveguide bandpass filter arranged at right angle to the longitudinal direction (radio wave propagation direction) is composed only of conductors. The conductor comprises depressions each opening outwardly and having a non-conducting region which continues from the inside of the opening section to the outside, and a window in the conductor section between these opposed depressions. In an alternative embodiment, such conductor shall be covered by a dielectric such as a resin.
    Type: Grant
    Filed: December 26, 2005
    Date of Patent: May 26, 2009
    Assignee: The Doshisha
    Inventors: Mikio Tsuji, Hiroyuki Deguchi, Masataka Ohira
  • Patent number: 7535314
    Abstract: A line transition device that includes a waveguide and a microstrip line. The microstrip line is substantially orthogonal to an electromagnetic wave propagation direction in the waveguide. A choke groove crosses the microstrip line. A coupling conductor provided at a tip of the microstrip line is positioned at a terminal end of and inside the waveguide. A slit-like region where a ground conductor is not formed is substantially orthogonal to the electromagnetic wave propagation direction in the waveguide. A longitudinal length of the slit-like region is substantially equal to a quarter of the wavelength of electromagnetic waves. The slit-like region is provided such that it extends from an end of a ground conductor near a boundary between the coupling conductor and the microstrip line to reach the choke groove.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: May 19, 2009
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Atsushi Saitoh
  • Patent number: 7515013
    Abstract: An apparatus and method relating to a rectangular waveguide cavity launch are disclosed that enable coupling an electromagnetic wave from the top surface of a waveguide distribution network formed into a conductive plate with the narrow wall of a rectangular waveguide facing the top of the conductive plate. A resonant cavity structure is formed into a conductive plate and coupled to a waveguide also formed into the plate, the resonant cavity structure having a cavity width wider than the narrow wall dimension of the waveguide. The resonant cavity structure includes a conductive block within it having a block width substantially equal to a difference between the cavity width of the resonant cavity structure and the narrow wall dimension. The cavity launch excites and rotates a dominant waveguide mode entering the structure such that the dominant waveguide mode enters the waveguide substantially parallel to the narrow wall dimension.
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: April 7, 2009
    Assignee: The Boeing Company
    Inventors: John B. O'Connell, Stephen L. Fahley
  • Patent number: 7474178
    Abstract: According to some embodiments, a waveguide cable includes a dielectric core and a conducting layer surrounding the dielectric core. A first antenna may be provided at a first end of the waveguide cable to receive a digital signal and to propagate an electromagnetic wave through the dielectric core. A second antenna may be provided at a second end of the waveguide cable, opposite the first end, to receive the electromagnetic wave from the dielectric core and to provide the digital signal.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: January 6, 2009
    Assignee: Intel Corporation
    Inventors: Ricardo Suarez-Gartner, Stephen Hall, Bryce Horine, Anusha Moonshiram
  • Patent number: 7468641
    Abstract: A microwave bandstop filter comprises a waveguide segment of cross-section that presents longitudinal variation of sinusoidal type modulated by an amplitude function that is continuous, the period of said longitudinal variation of sinusoidal type being the Bragg period for the fundamental guided mode at a center frequency of the band to be stopped. A filter assembly comprises a microwave lowpass filter presenting a cutoff frequency and at least one interfering passband at frequencies higher than said cutoff frequency, and at least one bandstop filter as defined above, connected to the output of said lowpass filter, in which the amplitude and the period of said longitudinal variation, and also the length over which it extends are such that they stop said interfering passband of said lowpass filter. An output multiplexer for a multichannel microwave transmitter includes such a filter assembly.
    Type: Grant
    Filed: July 26, 2006
    Date of Patent: December 23, 2008
    Assignee: Agence Spatiale Europeenne
    Inventors: Mario Sorolla, Dietmar Schmitt, Marco Guglielmi, Javier Gil, Noelia Ortiz Perez De Eulate
  • Publication number: 20080303612
    Abstract: A waveguide structure comprises a first waveguide portion, a second waveguide portion and a third waveguide portion. The first, second and third waveguide portions are connected in a series; signals feed into the first waveguide portion and then propagate through the first, second and third waveguide portions in sequence; and the cross sections of the first to third waveguide portions descend in size.
    Type: Application
    Filed: September 10, 2007
    Publication date: December 11, 2008
    Applicant: Microelectronics Technology Inc.
    Inventors: Ruei Yuen Chen, Hongru Suchen
  • Patent number: 7459994
    Abstract: Since gaps generated when assembling a high-frequency satellite receiver interrupt reception of satellite signals, accurate assembly or reduction in number of parts for assembly reduces interruption of reception of satellite signals. A signal feeding portion, a circuit board containing portion, and a signal output portion of a high-frequency satellite receiver extend from a first side of a main body of the high-frequency satellite receiver, so that the main body, the signal feeding portion, the circuit board containing portion, and the signal output portion are monolithically formed together, thereby preventing gaps resulting from assembly from affecting the reception of satellite signals.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: December 2, 2008
    Assignee: Wistron NeWeb Corporation
    Inventors: Yung-Chin Chen, Hung-Yuan Lin, San-Yi Kuo
  • Patent number: 7439831
    Abstract: A transition circuit includes: a waveguide having a notched portion formed by cutting away a portion of the tube wall of the waveguide from the end portion of the waveguide; a dielectric substrate in which a portion extending outside the waveguide through the notched portion of the waveguide is formed; a plurality of polygonal conductor patterns formed regularly disposed on the dielectric substrate; a ground conductor formed on the dielectric substrate; through holes electrically connecting this ground conductor and each of the conductor patterns; an open stub formed on the dielectric substrate; and the conductor of a microwave transmission line, which is formed on the portion of the dielectric substrate, extending outside the waveguide, and which is electrically connected to the open stub.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: October 21, 2008
    Assignee: Mitsubishi Electric Corporation
    Inventors: Araki Ohno, Hideyuki Ohhashi, Yukihiro Tahara, Katsuhisa Kodama
  • Patent number: 7432781
    Abstract: A monolithic duplexer and a fabrication method thereof. The monolithic duplexer includes a device wafer, a plurality of elements distanced from each other on a top portion of a device wafer, first sealing parts formed on the top portion of the device wafer, and a plurality of first ground planes formed between the plurality of elements. A cap wafer is also provided having an etched area for packaging the device wafer, a plurality of protrusion parts, a plurality of ground posts, and cavities. Second sealing parts are formed on a bottom portion of the protrusion parts, and a plurality of second ground planes cover the plurality of ground posts. Via holes vertically penetrate the cap wafer to connect to the plurality of the second ground planes, and ground terminals are formed on top portions of the via holes. The first sealing parts and the first ground planes are attached to the second sealing parts and the second ground planes, respectively.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: October 7, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-chul Sul, Duck-hwan Kim, Chul-soo Kim, In-sang Song, Moon-chul Lee, Kyu-dong Jung, Jea-shik Shin
  • Patent number: 7425930
    Abstract: A light weight antenna system and corresponding lightweight transmission lines are disclosed that are characterized as having an extremely light weight relative to prior such systems and lines. An inflatable body having an inner surface connected to an outer surface with a plurality of support structures, such as connecting tubes. Antenna elements are disposed on the outer surface of the inflatable body to form, for example, a phased array antenna. Coaxial transmission lines are used to transmit signals to and from an antenna element and are, in one embodiment, created by disposing an inner conductor within the aforementioned connecting tubes. Such a transmission line may be utilized in a number of applications, such as to connect a base station to an antenna system of a wireless communications network. In another embodiment, quasi coaxial transmission lines are formed by disposing flexible membrane shields around a transmission elements.
    Type: Grant
    Filed: April 27, 2005
    Date of Patent: September 16, 2008
    Assignee: Lucent Technologies Inc.
    Inventors: Alan Michael Lyons, Carsten Metz
  • Patent number: 7423497
    Abstract: A hybrid microwave-coupling device is for transmitting signals from non-radiative dielectric (NRD) waveguides to suspended striplines (SSL), and vice-versa. The two transmission lines are placed transversally with a longitudinal side of the NRD guide facing the SSL for conversion of a particular transverse electromagnetic (TEM) mode to a longitudinal section magnetic (LSM) mode.
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: September 9, 2008
    Assignee: Indian Institute of Technology
    Inventors: Nagendra Prasad Pathak, Shiban Kishen Koul, Ananjan Basu
  • Patent number: 7414424
    Abstract: Power measurement and control in transmission systems are affected by changes in load conditions. A method and system are provided for detecting and controlling power levels independent of such load conditions.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: August 19, 2008
    Assignee: Harris Stratex Networks Operating Corporation
    Inventors: Yen-Fang Chao, Cuong Nguyen, Roland Matian
  • Patent number: 7414491
    Abstract: A method and apparatus for changing the polarization of an input signal includes propagating a polarized input signal having orthogonal E-field components by at least one surface each having a respective surface impedance and varying at least one of the surface impedances to shift the phase of one of the components independently from the other so that the polarity of said input signal is changed. Bi-directional propagation is achieved by rotating polarity in one direction but not the other.
    Type: Grant
    Filed: July 5, 2007
    Date of Patent: August 19, 2008
    Assignee: Teledyne Licensing, LLC
    Inventor: J. Aiden Higgins
  • Patent number: 7403085
    Abstract: The present invention provides an RF module capable of outputting balanced electromagnetic waves without requiring adjustment and easily realizing miniaturization. The RF module includes: a waveguide (3) having an area which is surrounded by a pair of ground electrodes (6) and (7) provided so as to face each other and through holes (8) for making electric conduction between the pair of ground electrodes (6) and (7) and in which electromagnetic waves in the TE mode can propagate and a one-wavelength resonator (11) is formed; and a pair of output lines (4a) and (4b) connected to portions corresponding to half-wavelength resonance regions (A) and (B) of the one-wavelength resonator (11) in the ground electrode (6).
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: July 22, 2008
    Assignee: TDK Corporation
    Inventors: Tatsuya Fukunaga, Masaaki Ikeda, Kiyoshi Hatanaka
  • Publication number: 20080136550
    Abstract: A line transition device that includes a waveguide and a microstrip line. The microstrip line is substantially orthogonal to an electromagnetic wave propagation direction in the waveguide. A choke groove crosses the microstrip line. A coupling conductor provided at a tip of the microstrip line is positioned at a terminal end of and inside the waveguide. A slit-like region where a ground conductor is not formed is substantially orthogonal to the electromagnetic wave propagation direction in the waveguide. A longitudinal length of the slit-like region is substantially equal to a quarter of the wavelength of electromagnetic waves. The slit-like region is provided such that it extends from an end of a ground conductor near a boundary between the coupling conductor and the microstrip line to reach the choke groove.
    Type: Application
    Filed: February 15, 2008
    Publication date: June 12, 2008
    Inventor: Atsushi Saitoh
  • Patent number: 7355496
    Abstract: The present invention relates to a FINLINE type microwave band-pass filter comprising a waveguide provided with an insulating substrate placed in an E plane of the guide and comprising on at least one of the surfaces, conductive inserts electrically connected to the internal surfaces of the guide which support the substrate and which determine by their dimensions and their positioning on the substrate a Chebyshev type filter response curve. The filter includes at least one cavity in perpendicular short circuit to the substrate, the positioning and the dimensions of the cavity determining a transmission zero on the filter response curve for attenuating the frequencies situated around this zero. Such a filter is used in particular in transmission terminals operating in the Ka band.
    Type: Grant
    Filed: June 8, 2005
    Date of Patent: April 8, 2008
    Assignee: Thomson Licensing
    Inventors: Dominique Lo Hine Tong, Charline Guguen, François Baron, Jean-Yves Le Naour
  • Patent number: 7351990
    Abstract: A waveguide liner for an analyzer magnet chamber having three interlocking pieces of graphite, the liner pieces having sufficient size to allow them to stand freely without being secured, said liner pieces providing case of interchange and replacement in a Kestrel analyzer magnet chamber.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: April 1, 2008
    Assignee: Systems on Silicon Manufacturing Co. Pte. Ltd.
    Inventors: Wei Zhong Cao, Wai Leong Yip, Wen Jen Ronald Yeu, Hong Kiat Chia
  • Patent number: 7348864
    Abstract: An integrated circuit module comprising integrated coupling transmission structures protruding from the main body of the integrated circuit with extra substrate material removed around and/or under the coupling transmission structures.
    Type: Grant
    Filed: May 28, 2004
    Date of Patent: March 25, 2008
    Assignee: HRL Laboratories, LLC
    Inventors: Debabani Choudhury, Adele E. Schmitz
  • Patent number: 7301424
    Abstract: According to some embodiments, a waveguide cable includes a dielectric core and a conducting layer surrounding the dielectric core. A first antenna may be provided at a first end of the waveguide cable to receive a digital signal and to propagate an electromagnetic wave through the dielectric core. A second antenna may be provided at a second end of the waveguide cable, opposite the first end, to receive the electromagnetic wave from the dielectric core and to provide the digital signal.
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: November 27, 2007
    Assignee: Intel Corporation
    Inventors: Ricardo Suarez-Gartner, Stephen Hall, Bryce Horine, Anusha Moonshiram
  • Patent number: 7298232
    Abstract: A waveguide filter with a signal input port at a first end and a signal output port at a second end includes a dielectric core of moldable material where the outer surface of its periphery has a metal layer with nonmetallized openings positioned at opposite ends of the filter to accommodate the input and output ports. The filter's periphery is configured to provide a cascade connection of a plurality of metal-bounded ridge-waveguide sections with interspersed metal-bounded evanescent-mode coupling regions. The filter can be joined through a manifold to realize a frequency-multiplexer, with the manifold containing a cascade connection of electrically short waveguide segments and quasi-lumped waveguide circuit components, such as irises. The filter and multiplexer are amenable to the application of cost-effective injection molding techniques to manufacture the dielectric core.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: November 20, 2007
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Christen Rauscher
  • Publication number: 20070262828
    Abstract: A transmission line transition includes a waveguide tube section having a waveguide tube, a waveguide tube section that is formed of at least a dielectric substrate and a line transition section formed of at least a dielectric substrate disposed adjacent the waveguide tube section to cover the hole, a transmission line for transmitting the electromagnetic wave, and an antenna pattern that is disposed in the hole to be electromagnetically coupled with the transmission line. Each of the dielectric substrates has a plurality. of via holes disposed to surround the hole at a distance ?=an integer n×wave length ?g/2 from the peripheral wall of the hole.
    Type: Application
    Filed: May 10, 2007
    Publication date: November 15, 2007
    Applicant: DENSO Corporation
    Inventor: Akihisa Fujita
  • Patent number: 7292123
    Abstract: The invention relates to RF bandpass filters with pseudo-elliptic response. In a filter comprising a dielectric substrate placed in E position in a rectangular waveguide and comprising inserts on one of the surfaces of the substrate are placed conductors linked electrically to the walls of the guide, and on the other surface of the substrate opposite these conducting inserts are placed electrically floating inserts that make it possible to determine zeros in the transmission curve of the filter. This yields a filter exhibiting a response curve of pseudo-elliptic type which improves the rejection of spurious frequencies without increasing the dimensions of the filter.
    Type: Grant
    Filed: December 18, 2003
    Date of Patent: November 6, 2007
    Assignee: Thomson Licensing
    Inventors: Dominique Lo Hine Tong, Philippe Chambelin, Charline Guguen
  • Patent number: 7280011
    Abstract: A hollow waveguide (1) has a wall (3) having plural pegs (16) thereon. The pegs (16) which project into the hollow interior of the waveguide (1) such that the waveguide (1) propagates electromagnetic waves only below a certain frequency. The surface of each of the pegs (16) is substantially free of discontinuity and concavities. The waveguide (1) may be manufactured by a moulding process.
    Type: Grant
    Filed: November 25, 2002
    Date of Patent: October 9, 2007
    Assignee: Intel Corporation
    Inventors: Esen Bayar, Antony James Booth
  • Patent number: 7271680
    Abstract: A method, system, and apparatus for high data rate parallel plate mode signaling.
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: September 18, 2007
    Assignee: Intel Corporation
    Inventors: Stephen Hall, Tao Liang, Howard Heck, Bryce Horine, Gary Brist
  • Patent number: 7268650
    Abstract: A waveguide is disclosed that shifts the phase of the signal passing through it. In one embodiment, the waveguide has an impedance structure on its walls that resonates at a frequency lower than the frequency of the signal passing through the waveguide. This causes the structure to present a capacitive impedance to the signal, increasing its propagation constant and shifting its phase. Another embodiment of the new waveguide has impedance structures on its wall that are voltage controlled to change the frequency at which the impedance structures resonate. The range of frequencies at which the structure can resonate is below the frequency of the signal passing through the waveguide. This allows the waveguide cause a adjust the shift in the phase of its signal. An amplifier array can be included in the waveguides to amplify the signal. A module can be constructed of the new waveguides and placed in the path of a millimeter beam.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: September 11, 2007
    Assignee: Teledyne Licensing, LLC
    Inventor: John A. Higgins
  • Patent number: 7253698
    Abstract: A line converter includes ground conductors, a transmission-line conductor and a coupling-line conductor disposed on a dielectric substrate. A dielectric-filled waveguide includes a lower conductor plate, an upper conductor plate, a lower dielectric strip, and an upper dielectric strip, where the dielectric substrate is sandwiched between the lower conductor plate and the lower dielectric strip, and the upper conductor plate and the upper conductor strip, so that a conductor portion S that is part of the ground conductors of the dielectric substrate defines a shield area of the dielectric-filled waveguide. The coupling-line conductor is coupled to a standing wave generated by the shield area, at a position where the electric-field intensity of the standing wave is high. Subsequently, a plane circuit can be arranged so as to be substantially parallel to the direction in which an electromagnetic wave propagates through the three-dimensional waveguide.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: August 7, 2007
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Atsushi Saitoh
  • Patent number: 7248866
    Abstract: An automatic, frequency selective microwave tuner, used for load pull transistor testing, is capable of generating independently controllable reflection factors, both in amplitude and phase, at several, harmonic or not, frequencies simultaneously. The tuner employs horizontally and vertically adjustable high Q resonant probes and replaces, when used in harmonic load pull set-ups, otherwise required combinations of wide-band tuners with harmonic rejection tuners or wide-band tuners and frequency discriminators (diplexers or triplexers).
    Type: Grant
    Filed: November 14, 2003
    Date of Patent: July 24, 2007
    Inventor: Christos Tsironis
  • Patent number: 7233216
    Abstract: The present invention provides a line transition and a method for manufacturing the same. The line transition is constructed such that a planar circuit can be arranged in the direction parallel to the propagation direction of electromagnetic waves propagating through a solid waveguide, the coupling characteristics of the solid waveguide with the planar circuit formed on a dielectric substrate are not influenced by the assembly precision of the waveguide and the circuit, and the line transition characteristics are not affected by a variation in manufacturing the dielectric substrate. Notches are formed at the edges of the dielectric substrate in the vicinities of coupled-line pattern segments formed on a dielectric substrate. The notches are formed by punching through holes in a ceramic green sheet serving as a motherboard, firing the motherboard, and cutting the motherboard using dicing lines passing through the through holes.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: June 19, 2007
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Takatoshi Kato, Atsushi Saitoh
  • Patent number: 7230217
    Abstract: A rectangular microwave applicator operating at a predetermined frequency and comprising a microwave enclosure forming a cavity having first and second transverse dimensions and a longitudinal dimension n the direction of propagation of microwave energy, wherein said dimensions are such that a main power-transferring Teym1n mode with a long vertical wavelength is enhanced, and a significant amplitude of a complementary Teym2n mode is created, wherein m1, m2 and n are positive odd integers and m2 and n are both less or equal to m1-2.
    Type: Grant
    Filed: June 10, 2003
    Date of Patent: June 12, 2007
    Assignee: EXH LLC
    Inventor: Per O. Risman
  • Patent number: 7221181
    Abstract: Power measurement and control in transmission systems are affected by changes in load conditions. A method and system are provided for detecting and controlling power levels independent of such load conditions.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: May 22, 2007
    Assignee: Harris Stratex Networks Operating Corporation
    Inventors: Yen-Fang Chao, Cuong Nguyen, Roland Matian
  • Patent number: 7218833
    Abstract: A wireless communication system comprises a plurality of wireless communication apparatus, a plurality of sub-racks, and a rack. The wireless communication apparatus comprises a demultiplexing circuit, a cable to be connected to the demultiplexing circuit, a waveguide interface to be connected to the cable, and a waveguide to connect the waveguide interface and the antenna. A plurality of sub-racks for each housing the wireless communication apparatus to be connected to an antenna are installed in the rack. Among a plurality of the wireless communication apparatus which are different from one another, a pair of the waveguide interface and waveguide is disposed at a different position from other pair/pairs of waveguide interface and waveguide on a predetermined projectional plane. The waveguide assigned to each of the wireless communication apparatus extends along an outside of the sub-rack.
    Type: Grant
    Filed: February 28, 2005
    Date of Patent: May 15, 2007
    Assignee: NEC Corporation
    Inventor: Yuichi Sugiyama
  • Patent number: 7218190
    Abstract: Waveguides and scattering devices are made from a pair of slabs, at least one slab being either an “epsilon-negative (ENG)” layer in which the real part of permittivity is assumed to be negative while its permeability has positive real part, or a “mu-negative (MNG)” layer that has the real part of its permeability negative but its permittivity has positive real part. The juxtaposition and pairing of such ENG and MNG slabs under certain conditions lead to some unusual features, such as resonance, complete tunneling, zero reflection and transparency. Such materials also may be configured to provide guided modes in a waveguide having special features such as mono-modality in thick waveguides and the presence of TE modes with no cut-off thickness in thin parallel-plate waveguides. Using equivalent transmission-line models, the conditions for the resonance, complete tunneling and transparency are described as well as the field behavior in these resonant paired structures.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: May 15, 2007
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: Nader Engheta, Andrea Alù
  • Patent number: 7205956
    Abstract: A communications tower, or other structure is provided with at least one waveguide defined in a structural support. The waveguide can be used to transmit signals up and down the communications tower thereby eliminating at least some cabling.
    Type: Grant
    Filed: December 14, 2004
    Date of Patent: April 17, 2007
    Assignee: Nortel Networks Limited
    Inventors: Somsack Sychaleun, Gregory Carleton, Steve Beaudin
  • Patent number: 7205862
    Abstract: The invention provides a dielectric substrate; a ground conductor pattern is formed on one surface of the dielectric substrate and which has a ground conductor pattern omission portion; a strip conductor pattern formed on a surface of the dielectric substrate opposite to the surface having the ground conductor pattern; a conductor pattern for shorting of a waveguide formed so as to be continuously connected to the strip conductor pattern; connecting conductors for connecting the ground conductor pattern and the conductor pattern to each other within the dielectric substrate; and a waveguide connected to the dielectric substrate so as to correspond to the ground conductor pattern omission portion. Also, a microstrip line is constituted by the strip conductor pattern, the ground conductor pattern, and the dielectric substrate. Further, a dielectric waveguide shorting portion is constituted by the conductor pattern, the ground conductor pattern, and the connecting conductors.
    Type: Grant
    Filed: December 15, 2005
    Date of Patent: April 17, 2007
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yukihiro Tahara, Moriyasu Miyazaki, Kouichi Matsuo, Kazuyoshi Inami, Makoto Matsunaga