Wave transmission lines and networks inventions 05/08

20080122552 - Surface acoustic wave filter device: A longitudinally-coupled-resonator surface acoustic wave filter device has a sufficient pass-band width, in which a large attenuation in a stop band near the low-frequency side of a pass band and sharp filter characteristics, and low insertion loss in the pass band are achieved. The filter device is a five-IDT longitudinally-coupled-resonator... Agent: Murata Manufacturing Company, Ltd. C/o Keating & Bennett, LLP

20080122553 - Adaptive impedance matching module: An embodiment of the present invention provides an apparatus, comprising an RF input port, an RF output port connected to the RF input port via a multichip adaptive impedance matching module (AIMM), and the multichip AIMM comprising one or more voltage or current controlled variable reactive elements, wherein the multichip... Agent: James S. Finn C/o William Tucker

20080122554 - Balanced/unbalanced filter module and communication apparatus: A balanced/unbalanced filter module includes a switch including a first port that inputs and outputs unbalanced signals in a first frequency band, a second port that inputs and outputs unbalanced signals in a second frequency band, and a third port that inputs and outputs unbalanced signals in these two frequency... Agent: Murata Manufacturing Company, Ltd. C/o Keating & Bennett, LLP

20080122555 - Delay line correlator: A circuit for the analog correlation of a 2.5 GHz signal to remove impairments such as echo, cross talk and intersymbol interference is described. Loop stability in a loop which generates an error signal and tap weights is achieved by providing a further delay from the taps of the delay... Agent: Blakely Sokoloff Taylor & Zafman

20080122556 - Noise filter: In a noise filter, an input side of a signal-line lead is inserted in a first substantially cylindrical ferrite bead, and an output side of the signal-line lead is inserted in a second substantially cylindrical ferrite bead. An input side of a ground lead is inserted in a third substantially... Agent: Murata Manufacturing Company, Ltd. C/o Keating & Bennett, LLP

20080122557 - Boundary acoustic wave filter device: A boundary acoustic wave filter device capable of increasing an out-of-band attenuation includes a dielectric film formed on a piezoelectric substrate, at least one longitudinally coupled resonator boundary acoustic wave filter having a plurality of IDTs disposed along a boundary between the piezoelectric substrate and the dielectric film, and at... Agent: Murata Manufacturing Company, Ltd. C/o Keating & Bennett, LLP

20080122558 - Surface acoustic wave device, transmitter, and transceiver: A surface acoustic wave device comprises a surface acoustic wave element, including: a piezoelectric substrate, a first interdigital transducer unit having a first interdigital transducer and a second interdigital transducer formed on the piezoelectric substrate, and a second interdigital transducer unit having a third interdigital transducer and a fourth interdigital... Agent: Oliff & Berridge, PLC

20080122559 - Microwave filter including an end-wall coupled coaxial resonator: The present invention relates to a microwave filter comprising a plurality of coupled resonators, wherein the plurality of coupled resonators includes at least one coaxial resonator comprising a housing having a lower end wall, a sidewall extending upwardly from the lower end wall and an upper end wall and an... Agent: Nixon & Vanderhye, PC

20080122560 - Three dimensional integrated passive device and method of fabrication: An integrated passive device (20) includes a first wafer (22), a first integrated device (28) formed on a first surface (24) of the wafer (22), and a second integrated device (30) formed on a second surface (26) of the wafer (22), the second surface (26) opposing the first surface (24).... Agent: Meschkow & Gresham, P.L.C

20080116989 - Differential transmission line: A differential transmission line includes: a substrate; a ground conductor layer; and a first and a second signal conductor disposed in parallel to each other on the substrate. The first signal conductor and the ground conductor layer compose a first transmission line, whereas the second signal conductor and the ground... Agent: Mcdermott Will & Emery LLP

20080117005 - Comb polarizer suitable for millimeter band applications: There is provided a comb polarizer suitable for millimeter band applications including: a waveguide having an aperture side formed of two separable half waveguides, and a comb shaped conductive unit having a plurality of cogs interposed between two half waveguides for transforming a linear polarized signal to a circular polarized... Agent: Townsend And Townsend And Crew, LLP

20080116991 - Filter having impedance matching circuits: A filter package is provided with a support structure, a filter device having terminals, impedance matching circuits formed on the support structure and electrically connected to at least some of the terminals of the filter device, and at least one electrical ground structure electrically connected to the impedance matching circuits.... Agent: Trop Pruner & Hu, Pc

20080116990 - Method and apparatus for varying an impedance: A method and apparatus for dynamically varying the impedance of a tank circuit whereby, over time, the response of the circuit to a received signal is maximized.... Agent: J. V. Myers & Associates, Pc

20080116988 - Flexible interconnect cable for an electronic assembly: A high speed flexible interconnect cable for an electronic assembly includes a number of conductive layers and a number of dielectric layers. Conductive signal traces, located on the conductive layers, combine with the dielectric layers to form one or more high speed electrical transmission line structures. The cable can be... Agent: Terrance A. Meador Incaplaw

20080116992 - Voltage supply unit for diagnosing electrical disconnection occurring in communication system and apparatus using the voltage supply unit: A voltage supply unit is provided for a communication system provided with a network including a transmission path that consists of a main line and plural branch lines, which are formed as a differential two-wire type of transmission line consisting of first and second communion lines. This unit comprises a... Agent: Nixon & Vanderhye, Pc

20080116993 - Piezoelectric filter, and duplexer and communications apparatus using the same: A piezoelectric filter which has a small circuit scale and device size and can reduce a loss, is provided. The piezoelectric filter (1) has an input impedance smaller than an output impedance. The piezoelectric filter (1) comprises an input terminal (101a), an output terminal (101b), series piezoelectric resonators (102a, 102b,... Agent: Wenderoth, Lind & Ponack L.l.p.

20080116994 - Circuit topology for multiple loads: A circuit topology for multiple loads is provided. In an embodiment, the circuit topology includes a driving terminal (50), a first node (A), a first receiving terminal (10), and a second receiving terminal (20). The driving terminal is coupled to the first node via a main transmission line (11), the... Agent: Pce Industry, Inc. Att. Cheng-ju Chiang

20080116995 - Phase shifter with photonic band gap structure using ferroelectric thin film: Provided are a phase shifter with a photonic band gap (PBG) structure using a ferroelectric thin film. The phase shifter includes a microstrip transmission line acting as a microwave input/output line and a plurality of tunable capacitors arranged in the microstrip transmission line at regular intervals. Electrodes disposed on a... Agent: Cantor Colburn, LLP

20080116996 - Signal detector: A small and inexpensive signal detector is provided, which can be simply used for noise detection as a development tool for development engineers of systems and devices. A signal suppression filter (22) of inhibiting high-frequency signals contained in power voltage and a signal separation filter (23) of inhibiting transmission of... Agent: Oliff & Berridge, Plc

20080116997 - Cylindrical bandstop filters for medical lead systems: A one-piece cylindrical bandstop filter for medical lead systems incorporates parallel capacitive and inductive elements in a compact cylindrical configuration. The compact cylindrical configuration of the bandstop filter does not add significantly to the size or weight of the medical lead system. Preferably, the bandstop filters are of biocompatible materials... Agent: Kelly Lowry & Kelley, LLP

20080116998 - Stacked dielectric band-pass filter: A stacked dielectric band-pass filter is disclosed, which enables widening of a passband to a side of a high band of 8 GHz or more. Within a stacked dielectric block, a pair of first λ/4 resonator electrodes that are formed on approximately the same plane, and connected to input terminals... Agent: Knobbe Martens Olson & Bear LLP

20080116999 - Integrated device and fabricating method thereof: An integrated device is constructed by integrating an FBAR and a tunable capacitor. The integrated device includes a substrate; a resonator formed on the substrate; a driving electrode layer formed on the substrate apart from the resonator; a first electrode layer formed upwardly apart from the substrate and facing the... Agent: Roylance, Abrams, Berdo & Goodman, L.l.p.

20080117000 - Filter device: A lattice-type filter circuit includes first and second balanced signal terminals; first and second balanced signal terminals; a first resonator connected to a series arm between the first balanced signal terminal on the input side and the first balanced signal terminal on the output side; a second resonator connected to... Agent: Arent Fox LLP

20080117001 - Filter device: A filter device has a novel structure, satisfying requirements to have balanced input and output, with a small number of configuration elements. The above filter device includes first and second balanced signal terminals on the input side to be connected to an external balance circuit; first and second balanced signal,... Agent: Arent Fox LLP

20080117002 - Base body for a yig filter or yig oscillator: A base element for a YIG band-pass filter or a YIG oscillator is formed from a non-magnetic material and comprises filter chambers, which are formed in the base element, wherein the filter chambers are connected to one another by channels, and YIG elements are disposed in the filter chambers and... Agent: Marshall, Gerstein & Borun LLP

20080117003 - Hairpin microstrip bandpass filter: A microstrip filter having a plurality of hairpin microstrip resonators each having two substantially rectangular legs connected at one end and generally configured in a “U” shape. The microstrip filter may comprise a first of the plural resonators operatively connected to a first feed point, a second of the plural... Agent: Thelen Reid Brown Raysman & Steiner LLP

20080117004 - High-frequency filter having electromagnetically-coupled branch lines: A high-frequency filter for cutting off a specific frequency element of a high-frequency signal, includes a transmission line for transmitting the high-frequency signal; and a plurality of branch lines, formed in a direction which intersects the transmission line, having a coupling part at which the branch lines are electromagnetically coupled... Agent: Sughrue Mion, Pllc

20080111649 - Differential signaling system and display using the same: A differential signaling system includes a pair of differential signal lines having a transmitting end and a receiving end, and a termination resistor and an active impedance compensator connected in parallel between the pair of differential signal lines at the receiving end, wherein the active impedance compensator includes a plurality... Agent: Lee & Morse, P.c.

20080111653 - Delay line calibration: A tunable delay line is calibrated to maintain the delay of the delay line at a desired value or within a desired range of values. In some aspects a signal is passed through a delay line multiple times so that the cumulative delay of the signal through the delay line... Agent: Qualcomm Incorporated

20080111647 - Non-reciprocal circuit element, composite electronic component, and communication apparatus: An isolator includes five center electrodes coupled at radio frequencies to a ferrite member to which a DC bias magnetic field is applied from a permanent magnet. First and third electrodes do not intersect each other. The first and third electrodes intersect the second, fourth and fifth electrodes with electrical... Agent: Murata Manufacturing Company, Ltd. C/o Keating & Bennett, LLP

20080111648 - Non-reciprocal circuit element, composite electronic component, and communication apparatus: An isolator includes first, second, and third center electrodes coupled in a high frequency manner with a ferrite member to which a direct-current magnetic field is applied by a permanent magnet. The first and third electrodes do not intersect with each other, and intersect with the second electrode in a... Agent: Murata Manufacturing Company, Ltd. C/o Keating & Bennett, LLP

20080111650 - Coupling device with electro-magnetic compensation: A coupling device with electro-magnetic compensation is provided. The coupling device includes a first substrate having a first signal line on a top surface of the first substrate and a second substrate having a second signal line on a top surface of the second substrate connected together with a bottom... Agent: Rosenberg, Klein & Lee

20080111651 - Thin film piezoelectric vibrator, thin film piezoelectric bulk acoustic wave resonator, and radio-frequency filter using such resonator: A thin film piezoelectric bulk acoustic wave resonator has a multilayer structure including a piezoelectric thin film, a first metal electrode film, and a second metal electrode film. At least a part of the piezoelectric thin film is interposed between the first and second metal electrodes. A resonance part and... Agent: Stanley P. Fisher Reed Smith LLP

20080111652 - Compact switchable filter for software-defined radio: A switchable bandpass filter includes a coupled line segment (comb) including a plurality of coupled transmission lines of substantially equal lengths that are each connected or otherwise coupled to the common RF ground at their first end, a plurality of adjustable capacitors each coupled proximate a second end of respective... Agent: Fulbright & Jaworski L.l.p.

20080111654 - Transmission arrangement: The invention relates to a microwave transmission arrangement (10) comprising a carrier substrate (1), with a microstrip transmission line, on a first side of the carrier substrate (1), said carrier substrate (1) comprising at least one opening (2; 2′) forming a waveguide input/output opening to a waveguide arrangement. The transmission... Agent: Ericsson Inc.

20080106349 - Adaptive impedance matching apparatus, system and method: An embodiment of the present invention provides an apparatus, comprising an RF matching network connected to at least one RF input port and at least one RF output port and including one or more voltage or current controlled variable reactive elements and wherein the RF matching network is adapted to... Agent: James S. Finn C/o William Tucker

20080106350 - Adaptive impedance matching apparatus, system and method with improved dynamic range: An embodiment of the present invention provides an apparatus, comprising an RF matching network connected to at least one RF input port and at least one RF output port and including one or more voltage or current controlled variable reactive elements, a voltage detector connected to the at least one... Agent: James S. Finn C/o William Tucker

20080106351 - Device for controlling the frequency of resonance of an oscillating micro-electromechanical system: A device for controlling the frequency of resonance of an oscillating micro-electromechanical system includes: a microstructure, having a first body and a second body, which is capacitively coupled to the first body and elastically oscillatable with respect thereto at a calibratable frequency of resonance, a relative displacement between the second... Agent: Seed Intellectual Property Law Group PLLC

20080106352 - Coupler to c-pathway device and methodology: The invention is an electromagnetic wave or “EM” coupler for successfully connecting EM waves between an EM generator output and a conductive pathway or “c-pathway” that is not normally considered as an EM transmission medium or line. The coupler includes a dual surface shell-like structure with an electrically conductive outer... Agent: Arthor R. Tilford

20080106353 - High-frequency switch: The present invention provides a high-frequency switch including: a first switching element connected between a first input/output terminal and a second input/output terminal; a second switching element connected between the second input/output terminal and the first switching element; a high-frequency line provided between the first input/output terminal, the first switching... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.c.

20080106354 - Boundary acoustic wave device and method for manufacturing boundary acoustic wave device: A boundary acoustic wave device has a small thickness, which is suitable for thin apparatuses, and can be manufactured at low cost. The boundary acoustic wave device includes a first IDT electrode disposed on a first surface of a substrate, a first insulating film covering the first IDT electrode, a... Agent: Murata Manufacturing Company, Ltd. C/o Keating & Bennett, LLP

20080106355 - Reflection-type bandpass filter: A reflection-type bandpass filter for ultra-wideband (UWB) radio data communications is provided. The reflection-type bandpass filter includes a substrate formed by laminating a conducting layer and a dielectric layer, and a microstrip line made of a conductor of a non-uniform width and provided on the dielectric layer. The width distribution... Agent: Sughrue Mion, PLLC

20080106356 - Ball grid array resonator: A ball grid array ceramic resonator including a substrate having one or more strips of conductive material on opposed first and second surfaces of the substrate. One or more conductive vias extend through the substrate and define termination ends in the respective substrate surfaces. In one embodiment, a plurality of... Agent: Daniel J. Deneufbourg Cts Corporation

20080106357 - Dielectric resonator, voltage-controlled oscillator, and wireless apparatus: 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... Agent: Dickstein Shapiro LLP

20080100404 - Transmission line transistor attenuator: An attenuator has an input adapted to receive a signal to be attenuated, and an output adapted to output an attenuated signal, and a shunt transmission line transistor having a gate transmission line adapted to receive an attenuator control voltage, a source configured as a source transmission line, and a... Agent: Kathy Manke Avago Technologies Limited

20080100394 - Microstrip to coplanar waveguide transition: Micro-machined microstrip-to-coplanar waveguide transitions for vertically integrated RF systems on chip. In one embodiment, a microstrip line is formed on one surface of a semiconductor wafer and a coplanar waveguide is formed on an opposite surface of the wafer, where the microstrip line and the coplanar waveguide are electrically coupled... Agent: MillerIPGroup, PLC Emag Technologies, Inc.

20080100395 - Switch circuit, front end module and radio terminal including switch circuit: A small-sized, low-cost radio frequency switch circuit, which has good characteristics of isolation between a transmission circuit and a reception circuit, includes a multi-layered substrate; a transmission line provided on the top surface of, or within, the multi-layered substrate; a first diode and a second diode connected respectively to both... Agent: Mcdermott Will & Emery LLP

20080100396 - Broadband hybrid junction and associated methods: The hybrid junction includes four electrically conductive planar windings, circular or rectangular, arranged so as to lie along an imaginary spherical or cylindrical surface. Each of the four electrically conductive windings is rotated from adjacent windings by about forty-five degrees. The four electrically conductive windings are electrically insulated from each... Agent: Allen, Dyer, Doppelt, Milbrath & Gilchrist

20080100397 - Film bulk acoustic resonator filter and duplexer: A film bulk acoustic resonator (FBAR) filter and a duplexer are disclosed. At least one series resonator is positioned between an input port for inputting a frequency signal and an output port for outputting a frequency signal, at least two shunt resonators respectively positioned between the input and output ports... Agent: Roylance, Abrams, Berdo & Goodman, L.L.P.

20080100398 - Method and apparatus for generating arbitrary phase shift using a phase shifter based on adding two perpendicular vectors with variable gains: A radio frequency (RF) phase shifter having an RC-CR circuit that includes a first capacitor having a first capacitor node and a second capacitor node and a first resistor coupled between the first capacitor node and a ground. The RC-CR circuit also includes a second resistor having a first resistor... Agent: Brake Hughes Bellermann LLP C/o Intellevate

20080100399 - Phase shifter: A phase shifter selectively switches between a low-pass filter 13 and a high-pass filter 12 using single pole double throw switches 10a and 10b provided on the input and output sides, respectively, and operatively linked to each other. The single pole double throw switches 10a and 10b include FETs Q1c... Agent: Sughrue Mion, PLLC

20080100400 - Filter package: A filter package includes a pair of spaced circuit boards; a magnetic core between the circuit boards; a plurality of windings on the core extending to at least one of the boards; and a plurality of conductor bars mechanically fastening and electrically interconnecting the circuit boards.... Agent: Iandiorio & Teska

20080100401 - Multi-layered band pass filter: There is provided a multi-layered band pass filter capable of improving a stop characteristic out of a pass band and reducing the entire size of the filter. The multi-layered band pass filter includes a ceramic laminated body having at least first to fifth dielectric layers laminated sequentially therein; first and... Agent: Mcdermott Will & Emery LLP

20080100402 - Monoblock rf resonator/filter: A resonator/filter adapted for direct surface mounting to the surface of a printed circuit board. The resonator/filter comprises a block of dielectric material including at least one resonator through-hole extending therethrough and respective top, bottom and side surfaces defining respective regions of dielectric material covered with conductive material. The top... Agent: Daniel J. Deneufbourg Cts Corporation

20080100403 - Communications interface accessory for power system arrester: A communications interface accessory for an electric power system arrester is described.... Agent: King & Spalding LLP