Dielectric Type Patents (Class 333/219.1)
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Publication number: 20110037541Abstract: A device capable of enhancing an electric field to drive an electromagnetic tag into operation is switchable between states to control operation of the tag. Enhancement is provided by a dielectric cavity structure defined between first and second conducting layers. Different states of the device may have different resonant frequencies and read ranges according to the characteristics of the enhancement. As such a container can be provided which includes a tag which switches states on opening, allowing improved tracking characteristics.Type: ApplicationFiled: December 13, 2007Publication date: February 17, 2011Applicant: OMNI-ID LIMITEDInventors: Daniel Robert Johnson, Paul Richard Clarke, Christopher Robert Lawrence, James Robert Brown, William Norman Damerell, Richard James Duncombe
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Publication number: 20110001586Abstract: Provided is a dielectric ceramics having crystals of a composition formula: aBaO.bCoO.cZnO.dNb2O5 wherein coefficients a, b, c and d satisfy 0.498?a<0.500, 0.066?b?0.132, 0.033?c?0.099, and 0.335?d?0.338. Provided is a dielectric ceramics having crystals composed of BaO, CoO, ZnO, and Nb2O5, wherein a peak strength ratio IA/IB between a crystal peak IA existing in the vicinity of 2?=18° and a crystal peak IB existing in the vicinity of 2?=31° in an X-ray diffraction chart is 0.003 or more. Provided is a resonator using the dielectric ceramics as a dielectric body.Type: ApplicationFiled: November 27, 2008Publication date: January 6, 2011Applicant: Kyocera CorporationInventors: Satoshi Toyoda, Shunichi Murakawa
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Publication number: 20100328175Abstract: A leaky cavity resonator that includes a waveguide, the waveguide being filled with a dielectric material, and at least two complementary split ring resonators (CSRRs), the CSRRs residing inside the waveguide parallel to each other placed symmetrically both radially and in height, a leaky resonant cavity being formed between the at least two CSRRs and a wall of the waveguide. A frequency band of the leaky cavity resonator is adjustable by varying a distance w between at least one outside perimeter of at least one CSRR and an interior wall of the waveguide. A frequency band of the leaky cavity resonator is also adjustable by varying a size of the leaky resonant cavity. The at least two CSRRs each have at least one stub connecting to a wall of the waveguide. A frequency band of the leaky cavity resonator is also adjustable by varying a size of the stubs.Type: ApplicationFiled: June 25, 2009Publication date: December 30, 2010Inventors: Tai A. Lam, Claudio G. Parazzoli, Minas H. Tanielian
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Publication number: 20100327996Abstract: A resonator arrangement has a conductive, semi-open outer housing, at an interior of which a conductive bar is provided disposed coaxially to the housing. At one end of the bar in a direction of a housing bottom, the bar has a die and, together with a dielectric and the housing bottom, forms a capacitor. The bar is short-circuited to the housing at another end, so that the bar and housing together form an LC oscillator circuit. Also disclosed is a method for analyzing a sample using a resonator arrangement.Type: ApplicationFiled: March 1, 2010Publication date: December 30, 2010Applicant: Forschungszentrum Juelich GmbHInventors: Norbert Klein, Svetlana Vitusevich, Serhiy Danylyuk
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Publication number: 20100308937Abstract: An object of the present invention is to provide an improved and simplified filter assembly. The object is achieved by a dielectric rod (120, 610, 620) for a filter chassis (110). The dielectric rod (120, 610, 620) extends between a first end (121) and a second end (122). The dielectric rod (120, 610, 620) comprises a conductive element (150) placed at the first (end 121). The conductive element (150) is adapted to be in conductive contact with a first contact means (141) of the filter chassis (110). The dielectric rod further comprises a second fastening element (160) placed at the second end (122). The second fastening element (160) is adapted to be attached and detached to a first fastening element (131) comprised in the filter chassis (110), such that the dielectric rod (120, 610, 620) is replaceable in the filter chassis (110).Type: ApplicationFiled: March 31, 2008Publication date: December 9, 2010Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Esa Myllyvainio, Benny Gustafson
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Publication number: 20100301971Abstract: A metamaterial comprises a support medium, such as a planar dielectric substrate and a plurality of resonant circuits supported thereby. At least one resonant circuit is a tunable resonant circuit including a conducting pattern and a tunable material, so that an electromagnetic parameter (such as resonance frequency) may be adjusted using an electrical control signal applied to the tunable material.Type: ApplicationFiled: February 7, 2008Publication date: December 2, 2010Applicant: Toyota Motor Engineering & Manufacturing North America, Inc.Inventors: Serdar H. Yonak, Frederick W. Mau, II, Vinh N. Nguyen
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Patent number: 7843288Abstract: An apparatus for transmitting power wirelessly is provided. The apparatus comprises: a dielectric resonator which generates evanescent waves in a predetermined direction in order to transmit power; and a loop antenna which is coupled to a surface of the dielectric resonator and supplies power to the dielectric resonator. The dielectric resonator transmits power by means of evanescent waves generated in directions perpendicular to top and bottom surfaces of the dielectric resonator and by radiation in directions parallel to the top and bottom surfaces of the dielectric resonator. Accordingly, efficient power transmission over short and long distance ranges is possible.Type: GrantFiled: April 30, 2008Date of Patent: November 30, 2010Assignees: Samsung Electronics Co., Ltd., Postech Academy-Industry FoundationInventors: Dong-hyun Lee, Kyung-ho Park, Wee-sang Park, Jae-hee Kim, Sung-jin Muhn, Dae-woong Woo
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Patent number: 7825751Abstract: In resonant elements 102 to 105 constituting a resonant circuit, an uncontrolled cross coupling which exists between two resonant elements is controlled by using a coupling element 106 which is newly arranged between the resonant elements, whereby it is possible to create a state where two resonant elements are not coupled with each other or a state where the amount of the coupling is reduced, which states are difficult to be realized on a plane. As a result, it is possible to improve characteristics of a planar filter.Type: GrantFiled: May 21, 2007Date of Patent: November 2, 2010Assignee: Kabushiki Kaisha ToshibaInventors: Tamio Kawaguchi, Fumihiko Aiga, Hiroyuki Kayano, Noritsugu Shiokawa, Tatsunori Hashimoto
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Publication number: 20100265015Abstract: The present invention relates to a resonator device having a stacked arrangement of laminated layers including a plurality of dielectric layers, and at least one resonator comprising a short-circuit electrode, a first capacitor electrode and a second capacitor electrode. Each electrode comprises at least a portion of a layer of electrically conductive material provided on a surface of one of the dielectric layers. The second capacitor electrode is disposed spaced, in the stacking direction, from the short-circuit electrode and the first capacitor electrode. The short-circuit electrode and the second capacitor electrode are electrically interconnected by a first electrical connection comprising at least one via hole penetrating one or more of the dielectric layers.Type: ApplicationFiled: December 4, 2008Publication date: October 21, 2010Inventors: Michael Hoeft, Toshio Ishizaki, Hideaki Nakakubo
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Publication number: 20100259344Abstract: 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: ApplicationFiled: June 29, 2010Publication date: October 14, 2010Applicant: MURATA MANUFACTURING CO., LTD.Inventor: Koji NOSAKA
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Patent number: 7808345Abstract: A dielectric resonator is constructed so as to have a substantially cruciform shape in cross section by including four plate components. A first set of opposed plate components have respective first principal center planes separated from each other and substantially parallel with each other. A second set of opposed plate components also have respective second principal center planes separated from each other and substantially parallel with each other. The first principal center planes are orthogonal to the second principal center planes. With this configuration, a TE01?y mode in which an electric-field vector rotates within the first set of opposed plate components and a TE01?z mode in which an electric-field vector rotates within the second set of opposed plate components are coupled.Type: GrantFiled: October 30, 2008Date of Patent: October 5, 2010Assignee: Murata Manufacturing Co., Ltd.Inventors: Masamichi Andoh, Kunihiro Komaki
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Publication number: 20100244994Abstract: To provide a resonator that includes a resonant tunneling diode. A resistor layer provided in series with the resonant tunneling diode, a dielectric provided in contact with the resonant tunneling diode, and first and second conductors that are placed so that the resonant tunneling diode and the dielectric are sandwiched therebetween are provided. Further, a resonator area where the dielectric is sandwiched between the first and second conductors, and a resistor area where the resonant tunneling diode and the resistor layer are sandwiched between the first and second conductors are provided in parallel with each other.Type: ApplicationFiled: March 24, 2010Publication date: September 30, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Ryota Sekiguchi, Yasushi Koyama
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Publication number: 20100244992Abstract: Disclosed are a dielectric resonator having simple configuration applicable to a multiple mode with no electrical signal transmission loss, and a method of controlling a resonance state (coupling mode) in the dielectric resonator. The dielectric resonator includes a cylindrical or polygonal external conductor, and a dielectric resonant element arranged at the substantially center of the external conductor. A notched portion is formed at a part of the dielectric resonant element so as to control the resonance state of the dielectric resonator.Type: ApplicationFiled: September 19, 2008Publication date: September 30, 2010Inventors: Takashi Kasashima, Noriyasu Sugimoto
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Publication number: 20100244993Abstract: To provide a resonator that includes a resonant tunneling diode that can generate an electromagnetic wave. In the resonator, the resonant tunneling diode and a resistor layer are sandwiched between first and second conductors in a direction approximately perpendicular to the in-plane direction of the resonant tunneling diode. Further, the in-plane cross-sectional area of the resistor layer is larger than that of the resonant tunneling diode. Further, the width of the in-plane cross-sectional area of the resistor layer is more than twice as large as the skin depth of an electromagnetic wave to be caused to resonate.Type: ApplicationFiled: March 24, 2010Publication date: September 30, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Ryota Sekiguchi, Yasushi Koyama
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Publication number: 20100230497Abstract: Apparatus capable of enhancing an incident electric field to drive an electromagnetic tag (124) into operation, comprising a resonant dielectric cavity which extends out of a single plane defined between two conducting surfaces (102, 104, 106). The cavity may extend over two or more layers, and can adopt C or S shaped or spiral profiles.Type: ApplicationFiled: December 19, 2007Publication date: September 16, 2010Inventors: James Robert Brown, Christopher Robert Lawrence, William Norman Damerell
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Patent number: 7782158Abstract: A filter for processing an RF signal includes an input port and an output port and a plurality of resonators. The resonators are arranged in a sequentially-coupled arrangement between the input and output ports to affect an RF signal therebetween. Each resonator includes a cavity and resonant element. The resonant elements of at least two resonators are made of two different types of materials to effect higher and lower Q factors for the resonators. The resonators are arranged to provide at least one resonator having a lower Q factor proximate one of the input and output ports while the higher Q factor resonator is provided proximate the inside of the sequentially-coupled arrangement.Type: GrantFiled: April 16, 2007Date of Patent: August 24, 2010Assignee: Andrew LLCInventor: Eric Wiehler
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Patent number: 7777598Abstract: A combline filter has a ceramic resonator disposed inside at least one cavity wall. Because the resonator is implemented as a hollow rod, a tuning element may be inserted into an opening on the top of the rod to tune its frequency. A mounting element, inserted into an opening on the bottom of the rod secures its position inside a cavity resonator. Instead of soldering the resonator to the filter's walls, the resonator is supported above a bottom or side wall of the cavity resonator.Type: GrantFiled: April 14, 2008Date of Patent: August 17, 2010Assignee: Radio Frequency Systems, Inc.Inventors: Hamid Reza Salehi, Teppo M. Lukkarila
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Patent number: 7777583Abstract: A whispering gallery mode dielectric resonator includes a conductive enclosure comprising a top, a bottom and walls. The resonator also includes a dielectric element disposed in the enclosure and operative to support a desired resonant mode that is dependent on a shape and dimensions of the dielectric resonator; and a mode selective coupling structure disposed over the enclosure and configured to selectively couple electromagnetic energy of the desired mode and configured not to substantially couple electromagnetic energy of a spurious mode supported in a region between the enclosure and the dielectric element.Type: GrantFiled: May 23, 2008Date of Patent: August 17, 2010Assignee: Agilent Technologies, Inc.Inventors: Robert C. Taber, Curt Alan Flory
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Patent number: 7756503Abstract: Heretofore, a plurality of packages were used in a high frequency module in which a plurality of waveguide terminals were positioned resulting in problems, such as degradation of characteristics in the connection lines between packages, lower ease of assembly when mounting and connecting the connection lines, increased cost, and so forth. To solve these problems, a plurality of cavities having a part or the entire side metallized is formed in a multi-layer dielectric substrate. The multi-layer dielectric substrate is provided with a plurality of waveguide terminals, microstrip line-waveguide converters, RF lines, bias and control signal wiring, and bias and control signal pads. A high frequency circuit is mounted within the cavity and sealed with a seal and cover. This is intended to reduce the number of package, improve performance, improve fabrication, and lower the cost.Type: GrantFiled: June 9, 2006Date of Patent: July 13, 2010Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Tsutomu Tamaki, Takuya Suzuki, Koichi Matsuo, Hiroshi Kai
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Publication number: 20100171571Abstract: The present invention relates to low vibration probes. Specifically, the present invention relates to low vibration probes in dielectric resonant oscillators. Accordingly, the present invention provides a dielectric resonant oscillator apparatus comprising a casing; a lid; a puck mounted on a support and one or more probes wherein the support comprises a hollow ceramic tube.Type: ApplicationFiled: August 5, 2008Publication date: July 8, 2010Applicant: BAE SYSTEMS plc.Inventor: Martin Peter Widgery
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Publication number: 20100171573Abstract: The present invention relates to low vibration probes. Specifically, the present invention relates to low vibration probes in dielectric resonant oscillators. Accordingly, the present invention provides a dielectric resonant oscillator apparatus comprising a casing; a lid; a puck mounted on a support and one or more probes wherein the support comprises a hollow ceramic tube.Type: ApplicationFiled: August 5, 2005Publication date: July 8, 2010Applicant: BAE SYSTEMS plcInventor: Martin Peter Widgery
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Publication number: 20100171572Abstract: The present invention relates to low vibration probes. Specifically, the present invention relates to low vibration probes in dielectric resonant oscillators. Accordingly, the present invention provides a dielectric resonant oscillator apparatus comprising a casing; a lid; a puck mounted on a support and one or more probes wherein the support comprises a hollow ceramic tube.Type: ApplicationFiled: August 5, 2008Publication date: July 8, 2010Applicant: BAE SYSTEMS plcInventor: Martin Peter Widgery
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Publication number: 20100156570Abstract: Disclosed is a resonator for wireless power transmission used in a mobile device. The resonator includes a substrate, at least one microstrip line, and a magnetic core. The microstrip line is formed on the substrate and is provided at one side thereof with a slit to have an open-loop shape. The magnetic core is formed on the substrate and is disposed on a space defined by the microstrip line to increase coupling strength.Type: ApplicationFiled: December 17, 2009Publication date: June 24, 2010Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Young-tack Hong, Sang-wook Kwon, Eun-seok Park, Won-keun Kong
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Publication number: 20100141358Abstract: A metamaterial includes a dielectric substrate and an array of discrete resonators at the dielectric substrate, wherein each of the discrete resonators has a shape that is independently selected from: an F-type shape; an E-type shape; or a y-type shape. A parameter of a chiral metamaterial is determined and a chiral metamaterial having such a parameter is prepared by the use of a model of the chiral metamaterial. The metamaterial model includes an array of discrete resonators. In one embodiment, each of the discrete resonators has a shape that is independently selected from the group consisting of: an F-type shape; an E-type shape; and a y-type shape. To the metamaterial model, electromagnetic (EM) radiation, preferably plane-polarized EM radiation in a visible, ultraviolet or near-infrared region, having at least one wavelength that is larger than the largest dimension of at least resonator of the metamaterial model, is applied.Type: ApplicationFiled: September 19, 2007Publication date: June 10, 2010Applicant: University of Massachusetts LowellInventors: Alkim Akyurtlu, Kenneth A. Marx, Nantakan Wongkasem
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Patent number: 7719391Abstract: The invention is a dielectric resonator circuit comprising a housing; first, second, and third resonators positioned substantially in a row within the housing with said second resonator positioned between the first and third resonators, wherein the resonators are positioned relative to each other such that a field generated in each resonator couples to an adjacent resonator; wherein the housing encloses the resonators and has a separating wall positioned between the first and third resonators in order to control electromagnetic coupling between the first and third resonators; and wherein said first separating wall comprises a first end and a second end along a length thereof and wherein the separating wall defines an iris at the first end, the wall comprising a main wall portion positioned substantially between the first and third resonators and an extension wall portion at the first end that extends at an angle from the main wall portion of said wall.Type: GrantFiled: June 21, 2006Date of Patent: May 18, 2010Inventors: Zhengxue Zhang, Kristi Dhimiter Pance
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Publication number: 20100109809Abstract: Provided is a thin film piezoelectric resonator which includes a piezoelectric resonator stack (12) having a piezoelectric layer (2), an upper electrode (10) and a lower electrode (8); and a substrate (6) which supports the piezoelectric resonator stack. The piezoelectric resonator stack (12) is provided with a vibration region (18) wherein the upper electrode (10) and the lower electrode (8) face each other through a piezoelectric layer (2) and primary thickness vertical vibration can be performed; and a supporting region (19) supported by the substrate (6). The vibration region (18) has an oval shape with a ratio a/b of 1.1 or more but not more than 1.7, where (a) is a long diameter and (b) is a short diameter. The piezoelectric resonator stack (12) is further provided with an upper dielectric layer (20) formed on the upper electrode (10).Type: ApplicationFiled: January 17, 2008Publication date: May 6, 2010Inventors: Kensuke Tanaka, Kazuki Iwashita, Hiroshi Tsuchiya
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Patent number: 7705694Abstract: In accordance with principles of the present invention, a two or more pole dielectric resonator circuit is provided with resonators that are elliptical in cross section orthogonal to the longitudinal axis. The resonators are mounted so that they are rotatable about their longitudinal axes, such that the straight line distance between two adjacent resonators measured in a straight line between orthogonal to and intersecting the longitudinal axes of the two resonators is a function of the orientation of the resonators about their longitudinal axes. The resonators can be oriented about their longitudinal axes in any orientation to adjust their spacing, which is directly proportional to their coupling magnitude, which, in turn, is proportional to the bandwidth of the circuit.Type: GrantFiled: January 12, 2006Date of Patent: April 27, 2010Assignee: Cobham Defense Electronic Systems CorporationInventors: Neil James Craig, Paul John Schwab, Kristi Dhimiter Pance
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Patent number: 7663454Abstract: A discrete resonator is provided, including a dielectric base having a dielectric constant. A metal contact formed on a major surface of the dielectric base has a predetermined area and is positioned at a predetermined location on the dielectric base to provide a predetermined loaded Q for the resonator. A metal ground coating is formed on the outer surface of the dielectric base with the exception of an isolation region surrounding the metal contact that is free of the metal ground coating. The area of the isolation region is sufficient to prevent significant coupling between the metal contact and the metal ground coating. The dielectric constant of the material used for the base, and the width and length of the dielectric base are each selected such that the resonator resonates at least at one predetermined resonant frequency in the GHz frequency range.Type: GrantFiled: April 8, 2005Date of Patent: February 16, 2010Assignee: Dielectric Laboratories, Inc.Inventor: David Allen Bates
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Publication number: 20100026421Abstract: A MEMS resonator, comprising a planar resonator body formed of two different materials with opposite sign temperature coefficient of Young's modulus. A first portion of one material extends across the full thickness of the resonator body. This provides a design which allows reduced temperature drift.Type: ApplicationFiled: July 10, 2009Publication date: February 4, 2010Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.Inventors: Jozef Thomas BEEK, Johannes Van WINGERDEN, Wim Van den EINDEN, Kim Phan LE, Gerhard KOOPS, Cas Van der AVOORT
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Publication number: 20100019869Abstract: A resonator including a resonant element having a bulk and columns of a material having a Young's modulus with a temperature coefficient having a sign opposite to that of the bulk.Type: ApplicationFiled: July 8, 2009Publication date: January 28, 2010Applicants: STMicroelectronics S.A., Commissariat A L'energie AtomiqueInventors: Cédric Durand, Fabrice Casset
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Publication number: 20100013578Abstract: Novel quadruple-mode, dual-mode, and dual-band filters as well multiplexers are presented. A cylindrical dielectric resonator sized appropriately in terms of its diameter D and length L will operate as a quadruple-mode resonator, offering significant size reduction for dielectric resonator filter applications. This is achieved by having two mode pairs of the structure resonate at the same frequency. Single-cavity, quad-mode filters and higher order 4n-pole filters are realizable using this quad-mode cylindrical resonator. The structure of the quad-mode cylinder can be simplified by cutting lengthwise along its central axis to produce a half-cut cylinder suitable for operation in either a dual-mode or a dual-band. Dual-mode, 2n-pole filters are realizable using this half-cut cylinder. Dual-band filters and diplexers are further realizable using the half-cut structure and full cylinder by carrying separate frequency bands on different resonant modes of the structure.Type: ApplicationFiled: June 5, 2009Publication date: January 21, 2010Inventors: Mohammad Memarian, Raafat R. Mansour
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Publication number: 20100001816Abstract: A low noise block converter feedhorn (LNBF) is disclosed. The LNBF comprises a PCB, a dielectric resonator oscillator (DRO), a chamber, a tuning screw, and a cover. The DRO is placed on the PCB. The chamber has a first partition, and the first partition is used to cover up the DRO. The chamber further comprises a round hole. The tuning screw passes through the round hole and is then used to adjust the oscillating frequency of the DRO. The cover is used to cover up the tuning screw in order to restrain the DRO from power leakage through the gap in between the round hole and the tuning screw.Type: ApplicationFiled: March 30, 2009Publication date: January 7, 2010Applicant: WISTRON NEWEB CORP.Inventors: Tsan-Chou Wu, Wen-Tsai Tsai, Chen-Yueh Chen
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Patent number: 7640647Abstract: Projecting elongate stub walls are provided on the planar surfaces of a substrate at positions where bonding of the substrate to a clamping lid or base is to be carried out. On firing of the substrate, the surfaces thereof are mechanically processed but since the stub walls protrude from the substrate, the grinding and polishing tools make contact with the surfaces of these stub walls, rather than with the entire substrate surface. As a result, the area of the substrate to be processed is minimised and problems with dishing and erosion are alleviated. This allows the clamping lid, or frame to be bonded, using conventional conductive adhesive processes, avoiding the cracking and stress problems associated with non-uniformity of the surface of the ceramic substrates.Type: GrantFiled: January 23, 2006Date of Patent: January 5, 2010Assignee: Astrium LimitedInventor: Simon Leonard Rumer
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Publication number: 20090295509Abstract: An electromagnetic resonator may be used for efficient heating and/or reaction of materials. More particularly, resonator-based systems may be used for efficient pyrolysis, gasification, incineration (or other similar processes) of feedstock including but not limited to biomass, petroleum, industrial chemicals and waste materials using RF resonators and adaptively tunable RF resonators. A processing architecture based on the use of resonators is presented.Type: ApplicationFiled: April 14, 2009Publication date: December 3, 2009Applicant: Universal Phase, Inc.Inventors: Neel S. Master, Reza Arghavani, Frederick M. Espiau, Mehran Matloubian
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Patent number: 7626216Abstract: A hybrid electromagnetic bandgap (EBG) structure for broadband suppression of noise on printed wiring boards includes an array of coplanar patches interconnected into a grid by series inductances, and a corresponding array of shunt LC networks connecting the coplanar patches to a second conductive plane. This combination of series inductances and shunt resonant vias lowers the cutoff frequency for the fundamental stopband. The series inductances and shunt capacitances may be implemented using surface mount component technology, or printed traces. Patches may also be interconnected by coplanar coupled transmission lines. The even and odd mode impedances of the coupled lines may be increased by forming slots in the second conductive plane disposed opposite to the transmission line, lowering the cutoff frequency and increasing the bandwidth of the fundamental stopband.Type: GrantFiled: October 18, 2006Date of Patent: December 1, 2009Inventor: William E. McKinzie, III
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Publication number: 20090289729Abstract: A whispering gallery mode dielectric resonator includes a conductive enclosure comprising a top, a bottom and walls. The resonator also includes a dielectric element disposed in the enclosure and operative to support a desired resonant mode that is dependent on a shape and dimensions of the dielectric resonator; and a mode selective coupling structure disposed over the enclosure and configured to selectively couple electromagnetic energy of the desired mode and configured not to substantially couple electromagnetic energy of a spurious mode supported in a region between the enclosure and the dielectric element.Type: ApplicationFiled: May 23, 2008Publication date: November 26, 2009Inventors: Robert C. Taber, Curt Alan Flory
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Patent number: 7605678Abstract: A multiple-mode dielectric resonator in which a through hole is formed in a substantially cubic dielectric core so as to pass through opposing surfaces thereof. A conductive support bar is inserted into the through hole. Both ends of the support bar are secured to a cavity, and opposing inside walls defining the cavity are electrically connected to each other (are short-circuited) by the support bar. Therefore, the dielectric core is disposed in the cavity without using a support base, so that the resonance frequencies of TM01 delta modes, which are spurious modes, are considerably separated from frequencies of TE01 delta modes that are used.Type: GrantFiled: November 20, 2008Date of Patent: October 20, 2009Assignee: Murata Manufacturing Co., Ltd.Inventors: Masamichi Ando, Takaya Wada, Kunihiro Komaki
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Patent number: 7583164Abstract: A dielectric resonator with an air (or other dielectric) gap axially interrupting the body of the resonator and circuits employing such resonators. Preferably, the resonator body is conical or a stepped cylinder. However, the invention also is workable with a straight-sided cylindrical resonator body.Type: GrantFiled: September 27, 2005Date of Patent: September 1, 2009Inventors: Kristi Dhimiter Pance, Ronald Francis Hebert, Paul John Schwab
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Patent number: 7579835Abstract: A resonator for magnetic resonance applications has a conductor element that extends from a first conductor end to a second conductor end. During operation of the conductor element at a resonance frequency, a resonance current-oscillates from the first conductor end to the second conductor end and back. The conductor ends are coupled with one another via a circuit that tunes the conductor element to the resonance frequency. The conductor element is fashioned as a multi-layer conductor with a number of layers that have first and second layer ends at the conductor ends. The circuit causes layer currents that are of equal magnitudes to flow in the layers themselves during active operation of the conductor element at the resonance frequency.Type: GrantFiled: November 28, 2006Date of Patent: August 25, 2009Assignee: Siemens AktiengesellschaftInventors: Wilfried Schnell, Markus Vester
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Publication number: 20090206957Abstract: A resonant element is manufactured through a process including a setting step and a forming step. A substrate of the resonant element is made of a dielectric material. A ground electrode is formed on a rear principal surface side of the substrate. Principal-surface electrodes that define resonators together with the ground electrode and the dielectric material are formed on a front principal surface side of the substrate. An electrode protecting layer is formed on substantially entire surfaces on a front principal surface side of the principal-surface electrodes and the substrate. A coupling adjusting electrode with both ends facing a plurality of the principal-surface electrodes is formed on a front principal surface side of the electrode protecting layer. In the setting step, the shape of the coupling adjusting electrode is set in each manufactured lot.Type: ApplicationFiled: April 28, 2009Publication date: August 20, 2009Applicant: MURATA MANUFACTURING CO., LTD.Inventors: Motoharu HIROSHIMA, Soichi NAKAMURA, Yasunori TAKEI, Hirotsugu MORI
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Patent number: 7564399Abstract: The shielded mounting module comprises a cover member and a box member . The box member includes a plurality of bosses formed in the bottom surface. Each of the bosses provide an electrical contact point and are soldered to corresponding electrical pads on a circuit board, for example, grounded pads on the circuit board. The bosses also serve as stand-offs or spacers to mount the module above the surface of the circuit board. In another embodiment, the bosses are formed as a pair of rails.Type: GrantFiled: September 28, 2006Date of Patent: July 21, 2009Assignee: Siemens Milltronics Process Instruments, Inc.Inventor: Micheal Dolson
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Patent number: 7545235Abstract: A unitary resonator assembly for use in dielectric resonator filters and multiplexers. The unitary resonator assembly comprises a plurality of resonators joined by bridges, where the resonators and bridges are all constructed from a single piece of a dielectric material. The unitary resonator assemblies may be used in conjunction with unitary mounting structures that support a unitary resonator assembly in a filter or multiplexer. Also disclosed are 2-pole, 4-pole, and triplet filters implementing a unitary resonator assembly in conjunction with a unitary mounting structure, and a diplexer implementing a unitary resonator assembly in conjunction with a unitary mounting structure.Type: GrantFiled: December 7, 2006Date of Patent: June 9, 2009Inventors: Raafat R. Mansour, Rui Zhang
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Patent number: 7541897Abstract: A dielectric resonator having a line pattern that includes an electrode gap that defines a signal input/output portion provided on an open side, and a ground portion provided on a short-circuited side. The length L in a main direction of a portion of the line pattern in which the signal input/output portion and the ground portion face each other is smaller than one quarter the wavelength of a resonant signal of the resonator. A variable-capacitance element is connected to the signal input/output portion. One end of the variable-capacitance element has a positive potential and the other end of the variable-capacitance element has a negative potential.Type: GrantFiled: November 20, 2007Date of Patent: June 2, 2009Assignee: Murata Manufacturing Co., Ltd.Inventors: Takeshi Okano, Takahiro Baba
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Patent number: 7538638Abstract: A resonator, a filter, and a communication apparatus that can be easily miniaturized even if the resonant frequency is relatively low are provided. Conductor layers are laminated in the state in which they are partially insulated from each other by a dielectric layer. Conductor openings free from any conductor layer in the laminate direction serve as inductive areas, and the portion where the conductor layers oppose each other with the dielectric layer therebetween serves as a capacitive area CA. With this configuration, the resulting resonator serves as a stepped-impedance-structured slot resonator. By increasing the impedance step ratio of the capacitive area to the inductive areas according to this structure, the resonator is miniaturized. Additionally, the conductor loss of the resonator is reduced by suppressing the intrusion of magnetic field energy to the capacitive area. It is thus possible to obtain a small resonator having high Qo.Type: GrantFiled: March 10, 2004Date of Patent: May 26, 2009Assignee: Murata Manufacturing Co., Ltd.Inventors: Seiji Hidaka, Shin Abe
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Publication number: 20090128262Abstract: An apparatus for transmitting power wirelessly is provided. The apparatus comprises: a dielectric resonator which generates evanescent waves in a predetermined direction in order to transmit power; and a loop antenna which is coupled to a surface of the dielectric resonator and supplies power to the dielectric resonator. The dielectric resonator transmits power by means of evanescent waves generated in directions perpendicular to top and bottom surfaces of the dielectric resonator and by radiation in directions parallel to the top and bottom surfaces of the dielectric resonator. Accordingly, efficient power transmission over short and long distance ranges is possible.Type: ApplicationFiled: April 30, 2008Publication date: May 21, 2009Applicant: Samsung Electronics Co., Ltd.Inventors: Dong-hyun LEE, Kyung-ho PARK, Wee-sang PARK, Jae-hee KIM, Sung-jin MUHN, Dae-woong WOO
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Publication number: 20090121813Abstract: An electronic component includes first and second resonators provided within a layered substrate including stacked dielectric layers. The first resonator includes resonator-forming conductor layers of a first type and a second type. The resonator-forming conductor layers of the first type and the second type are reversed in relative positions of the short-circuited end and the open-circuited end, and are alternately arranged in the stacking direction of the dielectric layers. An input terminal is connected to all of the resonator-forming conductor layers of the first type. The second resonator includes resonator-forming conductor layers of a third type and a fourth type. The resonator-forming conductor layers of the third type and the fourth type are reversed in relative positions of the short-circuited end and the open-circuited end, and are alternately arranged in the stacking direction of the dielectric layers.Type: ApplicationFiled: October 20, 2008Publication date: May 14, 2009Applicant: TDK CORPORATIONInventors: Shigemitsu Tomaki, Noriaki Ootsuka, Yoshikazu Tsuya, Kazushige Shinoda
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Patent number: 7532397Abstract: In order to make a reflection coefficient in boundary surface between materials to be zero and permeate 100% of a light independent of a polarization direction, an optical device made of an optical material composed of a metamaterial prepared by arranging a plurality of at least either of electrical resonators or magnetic resonators each being smaller than a wavelength of a light wave in only a predetermined plane, and at least either of the electrical resonators and the magnetic resonators arranged functioning with respect to s-polarization, wherein at least either of the dielectric constant or the magnetic permeability is controlled in response to the function to induce a Brewster phenomenon in the s-polarization.Type: GrantFiled: June 19, 2006Date of Patent: May 12, 2009Assignee: RikenInventors: Takuo Tanaka, Satoshi Kawata
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Patent number: 7515007Abstract: Provided are an integrated dielectric resonator filter and a clock extraction device using the integrated dielectric resonator filter. The integrated dielectric resonator filter includes: a microwave substrate; a disc type dielectric resonator installed on the microwave substrate and having predetermined diameter and height; an input and output transmission line installed on both sides of the disc type dielectric resonator to transmit input and output signals; and a metal cover enclosing the disc type dielectric resonator to form a predetermined volume, opened toward the input and output transmission line, and closed in an orthogonal direction to the input and output transmission line.Type: GrantFiled: May 26, 2006Date of Patent: April 7, 2009Assignee: Electronics and Telecommunications Research InstituteInventors: Sang Kyu Lim, Sang Soo Lee, Hyun Woo Cho, Je Soo Ko
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Publication number: 20090072929Abstract: A multiple-mode dielectric resonator in which a through hole is formed in a substantially cubic dielectric core so as to pass through opposing surfaces thereof. A conductive support bar is inserted into the through hole. Both ends of the support bar are secured to a cavity, and opposing inside walls defining the cavity are electrically connected to each other (are short-circuited) by the support bar. Therefore, the dielectric core is disposed in the cavity without using a support base, so that the resonance frequencies of TM01 delta modes, which are spurious modes, are considerably separated from frequencies of TE01 delta modes that are used.Type: ApplicationFiled: November 20, 2008Publication date: March 19, 2009Applicant: MURATA MANUFACTURING CO., LTDInventors: Masamichi Ando, Takaya Wada, Kunihiro Komaki
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Publication number: 20090039982Abstract: A dielectric resonator is constructed so as to have a substantially cruciform shape in cross section by including four plate components. A first set of opposed plate components have respective first principal center planes separated from each other and substantially parallel with each other. A second set of opposed plate components also have respective second principal center planes separated from each other and substantially parallel with each other. The first principal center planes are orthogonal to the second principal center planes. With this configuration, a TE01?y mode in which an electric-field vector rotates within the first set of opposed plate components and a TE01?z mode in which an electric-field vector rotates within the second set of opposed plate components are coupled.Type: ApplicationFiled: October 30, 2008Publication date: February 12, 2009Inventors: Masamichi Andoh, Kunihiro Komaki