Wave transmission lines and networks inventions 10/07

20070247255 - Reducing stray capacitance in antenna element switching: An antenna array may include an antenna element configured to receive an RF signal. A PIN diode may selectively couple the antenna element to an RF source. Biasing the PIN diode may cancel the received RF signal at a stub coupled to the diode thereby reducing stray capacitance of the... Agent: Carr & Ferrell LLP

20070247256 - Wideband attenuator circuits and methods: Embodiments of the present invention include wideband attenuator circuits and methods. In one embodiment the present invention includes a first divider circuit coupled in series with two or more second divider circuits. The divider circuits include resistance and capacitance values that may be set according to particular relationships. In one... Agent: Chad R. Walsh, Fountainhead Law Group PC

20070247257 - Electronically tunable active duplexer: This invention provides a novel electronically tunable active duplexer for wireless transceiver applications. It relates to an active duplexer with full-duplex operation, permitting simultaneous transmission and reception of signals at same or different frequencies. It incorporates varactors, instead of fixed or mechanically adjustable capacitors, in phase shifting networks enabling one... Agent: Nucleus Remodeling, Inc.

20070247259 - Branching filter: A branching filter suppresses the effect of a ripple at a high frequency side of a first band-pass filter having a relatively low frequency passband and achieves sufficient pass band widths of the first and second band-pass filters. The branching filter includes a first band-pass filter having a relatively low... Agent: Murata Manufacturing Company, Ltd. C/o Keating & Bennett, LLP

20070247258 - Filter device substrate and filter device: A filter device substrate 1 of the present invention is formed by stacking a plurality of ceramic layers 12, 14, and includes a filter chip mounting portion for mounting a transmission filter chip 2 and a reception filter chip 3. Arranged on a surface of one ceramic layer 12 are... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20070247260 - Electronic device: An electronic device includes: a substrate; a first film provided on a major surface of the substrate; and a crystalline second film covering at least a part of the end surface and provided on the first film and the substrate. The end surface has an inclined surface which is inclined... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070247261 - Low-loss tunable radio frequency filter: A tunable radio frequency (RF) filter is provided. The RF filter comprises a signal transmission path having an input and an output, a plurality of resonant elements disposed along the signal transmission path between the input and the output, and a plurality of non-resonant elements coupling the resonant elements together.... Agent: VistaIPLaw Group LLP

20070247262 - Variable radio frequency band filter: A variable radio frequency band filter capable of varying the resonance frequency band comprises a housing having a support; a number of resonator rods arranged along the longitudinal direction of the housing; at least one tuning rod positioned on top of the resonator rods; a tuning support extending through the... Agent: Drinker Biddle & Reath (dc)

20070241836 - Efficient wired interface for differential signals: A plurality of differential signal transmitters can transmit data signals differentially through a plurality of conductive signal lines. Ones of the signal lines can be shared between transmitters, and others of the signal lines need not be shared between transmitters.... Agent: N. Kenneth Burraston Kirton & Mcconkie

20070241837 - Matrix switch: Four SP4T switches (31-34) are grouped in twos to form two switch pairs. First conductive lines (411-414, 421-424) are arranged in fours between the SP4T switches (31, 34; 32, 33) constituting the switch pairs. Each of four second conductive lines (51-54) connects to a corresponding one of different conductive lines... Agent: Blakely Sokoloff Taylor & Zafman

20070241838 - Noise suppression circuit: A small-sized noise suppression circuit capable of suppressing noise in a wide frequency range is realized. A noise suppression circuit has first and second inductors inserted in series in a first conductive line, and a series circuit configured to have a third inductor and a first capacitor connected in series.... Agent: Oliff & Berridge, PLC

20070241839 - High frequency multilayer bandpass filter: In a multilayer bandpass filter, capacitances are produced between a ground electrode provided in a ground electrode formation layer and capacitor electrodes provided in a capacitor electrode formation layer. A plurality of inductor electrodes are defined by via-electrodes and line electrodes such that loop planes of inductor electrodes at least... Agent: Murata Manufacturing Company, Ltd. C/o Keating & Bennett, LLP

20070241840 - Electronic part and manufacturing method thereof: An electronic part includes: a substrate; a comb-shaped electrode having a plurality of electrode fingers arranged parallel to one another on the upper surface of the substrate; and a protective film formed on the upper surface of the substrate so as to cover the comb-shaped electrode. The protective film has... Agent: Wenderoth, Lind & Ponack L.L.P.

20070241841 - Low-loss electro-acoustic component: A component includes a filter having a first structure and a second structure. The component also includes a substrate on which the first and second structures are arranged. The first structure has an approximately uniform layer thickness and an approximately uniform composition. The second structure has an approximately uniform layer... Agent: Fish & Richardson PC

20070241842 - Superconductor filter: A superconductor filter comprises a plurality of resonance elements arranged between input-output lines formed on a substrate. Metal conductor sections serving to inhibit the spatial coupling between the adjacent resonance elements are arranged between prescribed resonance elements, and a prescribed resonance element is coupled with another resonance element by a... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20070241843 - Temperature compensating tunable cavity filter: A high Q cavity resonator loaded with a metallic post and a ceramic disc, the resonator comprising an inner conductive post having a length less than a quarter wavelength. The resonance frequency of the resonator is tunable by changing a distance between a) an outer plate and b) a ceramic... Agent: Buchanan, Ingersoll & Rooney PC

20070241844 - Multi-metal coplanar waveguide: A coplanar waveguide CPW using multi-layer interconnection CMOS technology is provided. In the CPW including an interlayer insulator disposed on a substrate, metal multilayers disposed on the interlayer insulator, and a ground line-a signal line-a ground line formed of an uppermost metal layer, when a ground line of a lowermost... Agent: Ladas & Parry LLP

20070241845 - Pillbox vacuum window: A pillbox vacuum window of the present invention has a first metal part and a second metal part. The first metal part includes a ceramic disk formed with a metallization layer in a peripheral area thereof, a larger diameter cylindrical portion, and a smaller diameter cylindrical portion having an inner... Agent: Sughrue Mion, PLLC

20070236303 - Serpentine guard trace for reducing crosstalk of micro-strip line on printed circuit board: A serpentine guard trace for reducing far-end crosstalk of a micro strip transmission line is provided. The serpentine guard trace reduces receiving-end crosstalk caused by an electromagnetic interference of a signal of a nearby transmission line when transmitting a high speed signal through a micro strip transmission line on a... Agent: Cantor Colburn, LLP

20070236304 - Non-reciprocal circuit element, method for manufacturing the same, and communication device: A non-reciprocal circuit element is equipped with a ferrite-magnet assembly which includes a pair of permanent magnets and a ferrite sandwiched between the permanent magnets. A first center electrode and a second center electrode defined by conducting films are provided on principal surfaces of the ferrite, such that the first... Agent: Murata Manufacturing Company, Ltd. C/o Keating & Bennett, LLP

20070236305 - Compact rf circuit with high common mode attenuation: A compact RF differential circuit has a first differential I/O port comprising a first pair of signal carrying terminals which is connected to a source termination and a second differential I/O port comprising a second pair of signal carrying terminals which is connected to a load termination. The common mode... Agent: Oliff & Berridge, PLC

20070236306 - Miniaturised half-wave balun: A miniaturised half-wave balun comprises a single-ended I/O port comprising a first signal carrying terminal for connection to a source impedance and a differential I/O port comprising second and third signal carrying terminals for connection to a load impedance. First and second transmission line sections of equal length and characteristic... Agent: Oliff & Berridge, PLC

20070236307 - Methods and apparatus for a packaged mems switch: A micro-electro mechanical system (NEMS) device, such as a MEMS switch (100), includes a package seal (104) bonded to a substrate (102), wherein an electrode 106 (e.g., an actuation electrode associated with a switch) is provided on an inner surface (103) of the package seal (104). The MEMS switch (100)... Agent: Ingrassia Fisher & Lorenz, P.C. (fs)

20070236308 - Acoustic wave filter device and duplexer: In an acoustic wave filter device, first and second longitudinally coupled resonator SAW filters are provided on a piezoelectric substrate. The first and second longitudinally coupled resonator SAW filters are connected in parallel to each other. The first and second longitudinally coupled resonator SAW filters are withdrawal-weighted. The withdrawal weighting... Agent: Murata Manufacturing Company, Ltd. C/o Keating & Bennett, LLP

20070236309 - Cable strand for activating ejection valves: A cable strand for the activation of electrically actuatable injection valves of internal combustion engines having a common-rail injection system, wherein the cable strand connects an engine control device with the injection valves. Electrical cables of the cable strand are molded and/or foamed in a carrier that largely prescribes the... Agent: Robert W. Becker & Associates

20070236310 - Electronic device on substrate with cavity and mitigated parasitic leakage path: An electronic device. The electronic device includes a first electrode and a coating layer. The electronic device is fabricated on a substrate; the substrate has a cavity created in a top surface of the substrate; and the first electrode is electrically coupled to the substrate. The coating layer coats at... Agent: Kathy Manke Avago Technologies Limited

20070236311 - Low-pass filter: A low-pass filter (10) is provided. The low-pass filter includes an input part (100), an output part (120), a high impedance part (140), a first low impedance part (160), and a second low impedance part (180). The input part is electronically connected to the high impedance part for input of... Agent: PCe Industry, Inc. Att. Cheng-ju Chiang Jeffrey T. Knapp

20070236312 - Subwavelength waveguide and delay line with fractal cross sections: 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.... Agent: Heslin Rothenberg Farley & Mesiti PC

20070229181 - Impedance matching apparatus: An impedance matching apparatus has: a storing portion 70 for previously storing, for plural positions which can be taken by a movable portion of a variable impedance element, allowable power values respectively corresponding to the plural positions of the movable portion; and an abnormality determining portion 80 for determining an... Agent: Greenblum & Bernstein, P.L.C

20070229196 - Waveguide transition for production of circularly polarized waves: A waveguide transition for a filling level radar is provided, which has a planar emitting element, which cooperates with two lines, such that circularly polarized electromagnetic transmitting signals can be coupled from the lines into a waveguide. With the thus-existing planar coupling, the necessity for an additional resonance chamber in... Agent: Fay Kaplun & Marcin, LLP

20070229200 - Attenuator: An attenuator includes a main body and a circuit board module, wherein the main body is made of an electrically conducting metal, and an installing portion is concavely disposed between both ends of the main body, and a portion of the circuit board module is disposed on the installing portion... Agent: Bacon & Thomas, PLLC

20070229201 - Filter circuit and method of adjusting characteristics thereof: In a filter circuit, a conductor layer is formed on one side of a dielectric substrate, and a resonator pattern of resonators, input and sections are formed of micro strip lines on the other side of the dielectric substrate. A transmission line coupling the resonators and is also formed of... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070229182 - Apparatus and methods for constructing and packaging waveguide to planar transmission line transitions for millimeter wave applications: Apparatus and methods are provided for constructing waveguide-to-transmission line transitions that provide broadband, high performance coupling of power at microwave and millimeter wave frequencies. More specifically, exemplary embodiments of the invention include wideband, low-loss and compact CPW-to-rectangular waveguide transition structures and ACPS (or CPS)-to-rectangular waveguide transition structures that are particularly... Agent: F. Chau & Associates, LLC

20070229183 - Superconducting device, fabrication method thereof, and filter adjusting method: A superconducting device comprises a dielectric substrate, and a plane-figure type resonator pattern made of a superconductive material and formed on a first face of the dielectric substrate. The resonator pattern has a notch at least a portion of which is round.... Agent: Kratz, Quintos & Hanson, LLP

20070229184 - High speed signal transmission structure: A signal transmission structure includes a driving circuit block, a receiving circuit block, a main transmission line, and a copper patch. The main transmission line connects the driving circuit block to the receiving circuit block for transmitting signals therebetween. The copper patch is arranged at the main transmission line, and... Agent: PCe Industry, Inc. Att. Cheng-ju Chiang Jeffrey T. Knapp

20070229185 - Signal level adjustment method, signal level adjustment system and signal level adjustment circuit: A signal level adjustment system adjusting a level of signal outputted from a signal output circuit is realized. An input buffer threshold adjustment unit sets a threshold of a signal input circuit to a first variable value. A signal level adjustment unit adjusts an output level of a first signal... Agent: Mcginn Intellectual Property Law Group, PLLC

20070229187 - High-frequency circuit: A high-frequency circuit is composed of a L-shape transmission path 11, a first branch line 12 and a second branch line 13 having a different line length from each other. A bent point A and a branch point B, from which the branch lines 12 and 13 are branched, are... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070229186 - Compact stabilized full-band power amplifier arrangement: High frequency power amplification modules comprise a dielectric substrate supporting a stepped impedance transition coupled to the input of a power amplifier and a symmetrically disposed stepped impedance transition connected to the output of the power amplifier. The power amplification modules are oriented in an electromagnetic energy field so that... Agent: Eugene S. Indyk

20070229188 - Microstrip transmission line device and method for manufacturing the same: There is disclosed a microstrip transmission line device according to an embodiment of the invention which includes a substrate, a resistor layer, and a metal conductive layer. The substrate is made of an insulating or dielectric material and has a back face where a metal layer to be grounded is... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070229189 - High frequency module: A high frequency module incorporates a layered substrate. The layered substrate has a bottom surface and a top surface. Terminals are disposed on the bottom surface. SAW filters and inductors are mounted on the top surface. The layered substrate incorporates: a first conductor layer connecting the SAW filters to the... Agent: Oliff & Berridge, PLC

20070229190 - Low-pass filter and low-pass filter array: A low-pass filter comprises a capacitor, first and second varistors, a resistor, and first to third external electrodes. The capacitor includes a dielectric body and first to third internal electrodes. The first internal electrode is connected to the third external electrode physically and electrically. The second internal electrode is connected... Agent: Oliff & Berridge, PLC

20070229191 - Surface acoustic wave element and surface acoustic wave device comprising the element: A surface acoustic wave element comprises a first surface acoustic wave element unit formed on a surface of a piezo-electric substrate, and a second surface acoustic wave element unit formed on the surface of said piezo-electric substrate adjacent to said first surface acoustic wave element unit. Each of said first... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070229192 - Elastic boundary wave device, resonator, and filter: An elastic boundary wave device includes a LiNbO3 substrate, an electrode exciting an elastic wave and provided on the substrate, and a silicon oxide film provided on the substrate to cover the electrode, and parameters of the elastic boundary wave device have any one of ranges, where “θ” is a... Agent: Arent Fox PLLC

20070229193 - Balanced acoustic wave filter: An acoustic wave filter device includes a piezoelectric substrate and a longitudinally coupled resonator surface acoustic wave filter unit provided on the piezoelectric substrate. The surface acoustic wave filter unit includes first to fifth IDTs arranged in a surface wave propagation direction. The first, third, and fifth IDTs are connected... Agent: Murata Manufacturing Company, Ltd. C/o Keating & Bennett, LLP

20070229194 - Balanced saw filter:

20070229195 - Band-pass filter: A band-pass filter (10) includes a first resonator (140), a second resonator (160), a third resonator (180), an input part (100), and an output part (120). The input part is for receiving electromagnetic signals. The first resonator is electronically connected to the input part, and includes a first groove (1400).... Agent: PCe Industry, Inc. Att. Cheng-ju Chiang Jeffrey T. Knapp

20070229197 - Dielectric resonance apparatus, oscillation apparatus, and transmission/reception apparatus: A substantially circular electrode 3 is arranged on a surface 2A of a dielectric substrate 2 of a TM010-mode resonator 1. A coupling line 5, which extends along a diameter of the substantially circular electrode 3, is arranged on a back surface 2B of the dielectric substrate 2, and back-surface... Agent: Dickstein Shapiro LLP

20070229198 - Component for impedance change in a coplanar waveguide and method for producing a component: A component is provided for an impedance change in a coplanar waveguide which includes two grounding conductors and a signal line lying between the grounding conductors, as well as a conducting connecting element, which has a covering surface for the two grounding conductors and the signal line, and is electrically... Agent: Kenyon & Kenyon LLP

20070229199 - Nanometer electromechanical switch and fabrication process: The present invention describes nano-scale fabrication technique used to create a sub-micron wide gap across the center conductor of a coplanar waveguide transmission line configured in a fixed-fixed beam arrangement, resulting in a pair of opposing cantilever beams that comprise an electro-mechanical switch. Accordingly, a nanometer-scale mechanical switch with very... Agent: Smith Hopen, Pa