Wave transmission lines and networks inventions 02/07

20070040626 - Flexible interconnect cable with coplanar waveguide: A high speed flexible interconnect cable 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 transmission line structure may be realized as... Agent: Terrance A. Meador Incaplaw

20070040627 - Transmission line pair and transmission line group: A transmission line pair has two transmission lines placed adjacent to each other in parallel to a signal transmission direction of the transmission lines as a whole. Each of the transmission lines includes a first signal conductor which is placed on one surface of a substrate formed from a dielectric... Agent: Mcdermott Will & Emery LLP

20070040628 - Transmission line pair: In a transmission line pair including a first transmission line and a second transmission line which is so placed in adjacency that a coupled line region to be coupled with the first transmission line is formed, in the coupled line region, the first transmission line includes a first signal conductor... Agent: Mcdermott Will & Emery LLP

20070040629 - Nrd guide converter and connected structure of dielectric and conductor: 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... Agent: Young & Thompson

20070040630 - Electronic circuit unit having low transmission loss: In an electronic circuit unit for transmitting power through a transmission line 103 formed of a conductor pattern, a matching circuit 101 is connected to an output end of a power amplifier 102. The matching circuit 101 comprises a first conductor pattern 14 having bend portions P1 to P4 provided... Agent: Beyer Weaver & Thomas, LLP

20070040631 - Method and apparatus for electrically adjusting delay in radio-frequency systems: An apparatus and method for providing an electrically adjustable RF delay in which a splitter splits an input signal into two signal paths, one signal path providing a delay fixed at an integral number of wavelengths of a desired center frequency and both signal paths providing electrically adjustable attenuation. A... Agent: Patent Administrator Katten Muchin Rosenman LLP

20070040632 - Insulation of anti-resonance in resonators: A cancellation circuit to remove the anti-resonance signal from a resonator. Micro-mechanical and surface and bulk acoustic wave resonators include an anti-resonance in an output signal. This has an undesirable effect on certain types of systems in their function and performance. An anti-resonance cancellation circuit removes the anti-resonance from the... Agent: Berkeley Law & Technology Group

20070040633 - Acoustic surface wave filter module and method of manufacturing the same: In order to reduce the parts required for matching of an SAW filter module, the SAW filter module 10 obtains matching for coupling SAW filters 10A to 10D with RF-IC 20 using impedance matching circuits 11A to 11D. The real part of output impedance Z saw of the SAW filter... Agent: Jordan And Hamburg LLP

20070040634 - Transmission line: One transmission line includes a first signal conductor which is placed on one surface of a substrate formed from a dielectric or semiconductor and which is formed so as to be curved toward a first rotational direction within the surface, and a second signal conductor which is formed so as... Agent: Mcdermott Will & Emery LLP

20070040635 - Device for non-contacting transmission of electrical signals between two relatively moving parts, with reduced perturbing radiation: A device for non-contacting transmission of electrical signals between one part moving relative to another part has at least one strip conductor pair for symmetrical signal transmission attached on a first of the two parts, in which strip conductor pair the electrical signals are supplied from a transmission module for... Agent: Schiff Hardin, LLP Patent Department

20070035355 - Method for suppressing resonant effect between capacitors connected in parallel: A method for suppressing the resonant effect between capacitors connected in parallel is disclosed. By adjusting the length of the transmission line of the shunt capacitors, the performance of the shunt capacitors, which can be applied on various types of filtering circuits, can be improved in the desired bandwidth.... Agent: Bacon & Thomas, PLLC

20070035356 - Integrated load impedance sensing for tunable matching networks: An impedance matching system may be used, for example, for impedance matching between a transmitter/receiver front-end and an antenna in a mobile communication device. In a tuneable impedance matching system according to the invention a tuneable impedance matching circuit (508) is used also as a measuring circuit for obtaining a... Agent: Ware Fressola Van Der Sluys & Adolphson, LLP

20070035357 - Thickness tapered substrate launch: A technique for interconnecting monolithic microwave integrated circuits (MMICS) on a substrate, and a method for fabricating substrate sections that facilitate such interconnection. A MMIC is positioned in a gap in the substrate, on which are formed conventional microwave transmission lines for purposes of MMIC interconnection. On each side of... Agent: Tarolli, Sundheim, Covell & Tummino L.L.P.

20070035358 - Dual mode filter based on smoothed contour resonators: A planar filter has a planar resonator including a conductive region having smoothed contours and supporting a first resonating mode propagating along a first conductive path and a second resonating mode propagating along a second conductive path perpendicular to the first conductive path. The planar filter also has a conductor-free... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20070035359 - High frequency switch: To provide a high frequency switch capable of dealing with multiple frequency bands without having plurality of switch circuits. A first diode that conducts due to a bias current when a first switch is closed is interposed between a first signal terminal and a second signal terminal. A strip line... Agent: Pearne & Gordon LLP

20070035360 - Hybrid coupler: In some embodiments, a hybrid coupler is provided with a resistive coupler to conductively tap a transmission line and an electromagnetic coupler to be disposed next to the transmission line to electromagnetically tap it. Other embodiments are disclosed herein.... Agent: Blakely Sokoloff Taylor & Zafman

20070035361 - Signal splitter: A signal splitter comprising an input and a plurality of outputs is provided, wherein alternate outputs are connected to phase shifting devices. The phase shifting devices preferably comprise phase shifting transformers and introduce a phase shift of 180°, so that noise components of alternate outputs are antiphase and cancel one... Agent: Barnes & Thornburg LLP

20070035362 - High frequency composite component: A high-frequency composite component for selectively switching a GSM-system signal path and a DCS-system signal path for a signal transmitted to or received from an antenna terminal by a diplexer. Transmission-side input terminals and reception-side balanced output terminals to be switched by high-frequency switches are included in the GSM and... Agent: Murata Manufacturing Company, Ltd. C/o Keating & Bennett, LLP

20070035363 - Electromagnetic delay line inductance element: To provide an inductance element of a lumped constant type electromagnetic delay line which can easily be made as an ultra-small chip shape and obtain a preferable connection state at each section. Spiral-shaped inductors L0B, L4A, and L4B are formed on a first insulating substrate 15, and inductors L4A and... Agent: Foley And Lardner LLP Suite 500

20070035364 - Titanium-tungsten alloy based mirrors and electrodes in bulk acoustic wave devices: Titanium-tungsten alloy based mirrors and electrodes in bulk acoustic wave devices simplify processing by eliminating the need for adhesion, barrier and seed layers, and preserve the advantages of tungsten layers. Alternate layers of high and low acoustic impedance materials are use, wherein the high acoustic impedance layers are titanium-tungsten alloy... Agent: Blakely Sokoloff Taylor & Zafman

20070035365 - Integrable tunable filter circuit comprising a set of baw resonators: A tunable filter circuit having inputs IN1-IN2 and outputs OUT1-OUT2, comprising at least a primary four-pole circuit including in cascade: a first varactor having a first electrode connected to IN1 and a second electrode; a first inductive resistor connected between the second electrode of the varactor and input IN2, a... Agent: Seed Intellectual Property Law Group PLLC

20070030089 - Two-port non-reciprocal circuit device and communication apparatus: A two-port non-reciprocal circuit device has one end of a first central electrode electrically connected to an input port and the other end thereof electrically connected to an output port. One end of a second central electrode is electrically connected to the output port and the other end thereof is... Agent: Murata Manufacturing Company, Ltd. C/o Keating & Bennett, LLP

20070030090 - Microwave routing element, methods of routing microwaves and systems including same: Microwave routing elements and methods of directing microwaves are disclosed. One routing element comprises an inlet region, a plurality of outlet regions, and junctures positioned between an associated outlet region and the inlet region. Each juncture includes electrodes configured for generating an electrical arc across the juncture to inhibit transmission... Agent: Trask Britt, P.C./ Micron Technology

20070030091 - Rf matching network of a vacuum processing chamber and corresponding configuration methods: A RF matching network is described, and which includes a 1st to nth RF generators, and wherein each RF generator has a different frequency, and wherein the frequencies of the 1st to the nth RF input ports decline in sequence, and wherein between the ith frequency RF input port, and... Agent: Wells St. John P.s.

20070030092 - Programmable passive equalizer: Embodiments of a programmable passive equalizer are described herein.... Agent: Lee & Hayes, PLLC C/o Portfolioip

20070030093 - Broadband coupler technique for electrical connection to power lines: Disclosed is a power line broadband communication system having broadband coupler devices capable of direct electrical connection to an energized power line. The coupler includes a conductive portion movable by an adjustable member from a non-conducting retracted position spaced apart from the power transmission line to a forward conducting position... Agent: At&t Corp.

20070030095 - Antenna duplexer and wireless terminal using the same: A technology which can realize a high-performance multiband operation in a compact circuit configuration and is advantageous for a wireless terminal of GSM system for which the further increase of the demands is expected in the future is provided. Provided is a multiband switch type antenna duplexer adopted in a... Agent: Mattingly, Stanger, Malur & Brundidge, P.C.

20070030094 - Duplexer and communication apparatus: A duplexer includes transmission-side and reception-side band filters respectively including a plurality of surface acoustic wave resonators connected together to define a ladder circuit. Each of the surface acoustic wave resonators includes a 47° to 58° rotated, Y-cut, X-propagating LiNbO3 substrate and an IDT electrode provided on the LiNbO3 substrate.... Agent: Murata Manufacturing Company, Ltd. C/o Keating & Bennett, LLP

20070030096 - Duplexer and ladder type filter: A duplexer includes an antenna terminal, a first filter connected to the antenna terminal, and a second filter connected to the antenna terminal. At least one of the first filter and the second filter is a ladder type filter in which a parallel resonator and multiple series resonators are included,... Agent: Arent Fox PLLC

20070030097 - Polarized high-order mode electromagnetic wave coupler and its coupling method: The a polarized high-order mode electromagnetic wave converter and its coupling method uses bifurcate structure to divide the input wave into two signals with the same amplitude but opposition phases, which are then inputted into a circular main waveguide through waveguide so that the input wave could convert into linearly... Agent: John S. Egbert Egbert Law Offices

20070030098 - Digital phase shifter: Digital phase shifter, comprising series connection of controlled phase shifting bits (3a-3k), each of them inserts determinate amount of phase delay of the passing signal, wherein the phase change occur in response to the control signal switching the phase cells 3k and applied to its steering terminal 4k for a... Agent: Banner & Witcoff

20070030099 - Band pass filtering circuit fitted with acoustic resonators: A band pass filtering circuit based on a quadripole includes a serial branch having a first acoustic resonator presenting a frequency of resonance and a frequency of anti-resonance and mounted in serial with a first capacitor; a parallel branch having a second acoustic resonator resulting from the same manufacturing process... Agent: Seed Intellectual Property Law Group PLLC

20070030100 - Ltcc based electronically tunable multilayer microstrip-stripline combline filter: An embodiment of the present invention provides an apparatus, comprising a multilayer filter including a first resonator on a first layer of dielectric material or low-temperature-co fired-ceramic, a second resonator coupled to the first resonator on a second layer of dielectric material or low-temperature-co fired-ceramic, a third resonator coupled to... Agent: James S. Finn

20070030101 - Switch circuit: A switch circuit 1 includes a unit circuit including capacitors 12, 14, an inductor 20, and a FET 30 (switching element). The capacitors 12, 14 are provided in a path P1 (first path) connecting I/O terminals 92, 94. The capacitors 12, 14 are serially connected to each other. To the... Agent: Sughrue Mion, PLLC

20070030102 - 2d transmission line-based apparatus and method: A power combiner comprising an LC lattice structure is shown, together with a method for generating a planar wave front. The LC structure can comprise constant or voltage dependent capacitors. Either the delay or the characteristic impedance of the two-dimensional transmission line formed by the LC lattice structure are kept... Agent: Alessandro Steinfl, Esq. C/o Ladas & Parry

20070024387 - Rotary signal couplers: A rotary signal coupler having first and second portions 3a, 3b which are rotatable relative to one another and each have a plurality of pairs of inductive communication elements 34a, 34b and capacitive elements 35a, 36a, 35b, 36b which pairs are chosen to have resonant frequencies compatible with the frequency... Agent: Nixon & Vanderhye, PC

20070024388 - Slabline structure with rotationally offset ground: A slabline structure includes a first slabline having a first orientation and a second slabline having a second orientation that is rotationally offset from the first orientation. The slabline structure also includes a transition interposed between the first slabline and the second slabline.... Agent: Agilent Technologies Inc.

20070024389 - Switch circuit: The switch circuit 1 includes a common terminal 10 (common port), a plurality of branch terminals 22, 24, a common path P0 connecting the common terminal 10 and a diverging point N, branch paths P1, P2 connecting the diverging point N and the branch terminals 22, 24 respectively, distributed constant... Agent: Sughrue Mion, PLLC

20070024390 - Vertical comb actuator radio frequency micro-electro-mechanical system switch: A vertical comb actuator radio frequency (RF) micro-electro-mechanical system (MEMS) switch. The RF MEMS switch includes a substrate; first and second signal lines spaced at a predetermined interval from each other and deposited on an upper surface of the substrate; an actuator positioned over the first and second signal lines... Agent: Sughrue Mion, PLLC

20070024391 - Monolithic duplexer and fabrication method thereof: 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... Agent: Sughrue Mion, PLLC

20070024392 - Resonant circuit, filter, and antenna duplexer: There is provided a resonant circuit includes a resonator, an inductor connected in parallel with the resonator, and a capacitor connected in parallel with the resonator. There are also provided a filter and an antenna duplexer having the above-described resonant circuit.... Agent: Arent Fox PLLC

20070024393 - Tunable notch duplexer: A duplexer for bidirectional communication systems includes tunable band reject filters. The tunable band reject filter on the receiver side can be tuned to reject the transmit signal frequency, and the tunable band reject filter on the transmitter side can be tuned to reject the receive signal frequency. Thus, the... Agent: Fenwick & West LLP

20070024394 - Microwave bandstop filter for an output multiplexer: 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... Agent: Clark & Brody

20070024395 - Film bulk acoustic resonator, filter circuit and method for manufacturing a film bulk acoustic resonator: A film bulk acoustic resonator includes a substrate having a cavity at a surface of the substrate; a bottom electrode provided on the surface of the substrate so as to extend over the cavity; a piezoelectric film disposed on the bottom electrode; a top electrode disposed on the piezoelectric film... Agent: C. Irvin Mcclelland Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070024396 - Integrated filter including fbar and saw resonator and fabrication method therefor: An integrated filter including a film bulk acoustic resonator (FBAR) and a surface acoustic wave (SAW) resonator and a method of fabricating the integrated filter. The integrated filter includes: a substrate; a first electrode positioned in a predetermined first area on an upper surface of the substrate; a first piezoelectric... Agent: Sughrue Mion, PLLC

20070024397 - Surface acoustic wave resonator, surface acoustic wave device, and communications equipment: A plurality of IDT electrodes 2 to 7 each having a large number of electrode fingers extending in a direction perpendicular to a propagation direction of a surface acoustic wave propagating on a piezoelectric substrate 1 are arranged on the piezoelectric substrate 1 along the propagation direction, and each of... Agent: Hogan & Hartson L.L.P.

20070024398 - Electronic device and filter: A pair of balanced terminals is connected to a pair of interdigital-coupled quarter-wave resonators in an electronic device. This electronic device has a first resonance mode that resonates at a first resonance frequency f1 higher than a resonance frequency f0 in each of the pair of quarter-wave resonators when establishing... Agent: Oliff & Berridge, PLC

20070024400 - Ferroelectric varactors suitable for capacitive shunt switching: A ferroelectric varactor suitable for capacitive shunt switching is disclosed. High resistivity silicon with a SiO2 layer and a patterned metallic layer deposited on top is used as the substrate. A ferroelectric thin-film layer deposited on the substrate is used for the implementation of the varactor. A top metal electrode... Agent: Dinsmore & Shohl LLP

20070024399 - Filters and antennas for microwaves and millimetre waves, based on open-loop resonators and planar transmission lines: Filter for microwaves and millimetER waves, characterised in that it comprises a planar transmission medium (1) that it includes a conductor strip (3), metallic ground plane (4) and dielectric substrate (2) and in that it includes at least one split rings resonator (5a, 5b, 5c, 5d, 5e and 5f)... Agent: Wolf, Block, Shorr And Solis-cohen LLP

20070024401 - Rf mems switch having asymmetrical spring rigidity: An RF MEMS switch having asymmetrical spring rigidity. The RF MEMS switch has supporting members spaced apart in a certain interval on a substrate, a membrane being a motion member suspended by plural spring members extended on both sides of the membrane, and a bottom electrode being a contact surface... Agent: Sughrue Mion, PLLC