Wave transmission lines and networks inventions 04/09

20090108953 - Multi-junction waveguide circulator with overlapping quarter-wave transformers: An improved multi-junction waveguide circulator overlaps two quarter-wave dielectric transformer sections so that the transitional sections occur concurrently in the same length of waveguide. Consequently, the two quarter-wavelength sections require a total length of between one-quarter wavelength and one-half wavelength, with no air gap between the two sections along the... Agent: Hogan & Hartson LLPIPGroup, Columbia Square

20090108954 - Quasi active mimic circulator: A circulator capable of simultaneous transmit and receive operations, high frequency, and high isolation and broadband performance comprising: an antenna port; a transmission port; a receiving port; wherein each port is connected to a 90 degree combiner/divider for splitting an input signal into two output components, the said output components... Agent: Maurice M. Lynch

20090108963 - Integral variable termination for alarm system devices: Disclosed is a system for quickly and easily installing end-of-line termination devices at the end of alarm system signal circuits. The termination devices in this invention are both variable and integral to the housing of the alarm system devices. Each alarm system device is constructed with a receptacle at the... Agent: Law Office Of Gary Light, P.C. Attn: Peter Papavasiliou

20090108964 - ethernet coupling: Improved coupler for Ethernet over twisted pair. An improved coupler has a first common mode choke for connecting an Ethernet PHY to the primary winding of a transformer. The secondary winding of the transformer connects through a second common mode choke for connection to a twisted pair line. In one... Agent: Blakely Sokoloff Taylor & Zafman LLP

20090108955 - Semiconductor device and method for adjusting characteristics thereof: The object of the invention is to provide a semiconductor device including signal-transmission interconnections preferable for transmitting high frequency signal and capability to adjust characteristics of the above signal-transmission interconnections. A semiconductor device according to the present invention consists of a signal-transmission interconnection 20 for transmission of signals, a MOS... Agent: Wenderoth, Lind & Ponack, L.L.P.

20090108965 - Rf step attenuator: A broadband, high-speed RF step attenuator implemented using long-lifetime PIN diode switches is presented which provides step attenuation across a significant portion of the entire RF frequency spectrum while maintaining minimal insertion loss, return loss, and harmonics.... Agent: Jessica Costa

20090108956 - Circuit topology for multiple loads: A circuit topology for multiple loads includes a driving terminal, a first node coupled to the driving terminal and a second node via a first branch transmission line, a first receiving terminal which is a test point configured to detect errors of the circuit topology coupled to the first node... Agent: PCe Industry, Inc. Att. Steven Reiss

20090108957 - Phase shifter: A phase shifter includes a metal plate, a support portion, a slot, a coupling portion, and a ground portion. The phase shifter effectively improves signal coupling efficiency, and inhibits noise generated with the change of phase shift due to signal transmission. The phase shifter is advantageous in smaller volume, easy... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090108958 - Noise filter array: A noise filter array includes filter elements, each of which includes an LC parallel resonant circuit having a coil and a capacitor and an LC series resonant circuit having a coil and a capacitor, are arranged substantially parallel to one another in an array and integrally provided. Grounding capacitors that... Agent: Murata Manufacturing Company, Ltd. C/o Keating & Bennett, LLP

20090108959 - Contour-mode piezoelectric micromechanical resonators: A contour mode micromechanical piezoelectric resonator. The resonator has a bottom electrode; a top electrode; and a piezoelectric layer disposed between the bottom electrode and the top electrode. The piezoelectric resonator has a planar surface with a cantilevered periphery, dimensioned to undergo in-plane lateral displacement at the periphery. The resonator... Agent: Townsend And Townsend And Crew, LLP

20090108961 - Electroacoustic component: An electroacoustic component operates with guided acoustic waves and includes a first substrate, a second substrate, a metallic layer and an intermediate layer. The first substrate (S1) is made from a monocrystalline LiTaO3. The metallic layer is arranged between the first substrate and the intermediate layer. The intermediate layer is... Agent: Slater & Matsil, L.L.P.

20090108960 - Surface acoustic wave resonator, and surface acoustic wave filter: A surface acoustic wave resonator has piezoelectric substrate (11), IDT (13) formed of a plurality of electrode fingers (12) disposed on piezoelectric substrate (11), and reflectors (14) disposed near the opposite ends of IDT (13). IDT (13) has a gradation region where the electrode finger pitch of the plurality of... Agent: Wenderoth, Lind & Ponack L.L.P.

20090108962 - Dielectric filter for base station communication equipment: In a dielectric filter (1) for base station communication equipment, a rectangular solid dielectric block (2) is provided with a plurality of 1/4 wavelength resonators (3A1-3A4;3B1-3B4), which are arranged along side planes (2c,2d) of the dielectric block and extend in parallel to each other and to the side planes (2c,2d).... Agent: Frommer Lawrence & Haug

20090102581 - Interconnect for surfing circuits: An interconnect for surfing circuits is presented. The interconnect includes at least one control signal line, at least one data signal line, and at least one variable capacitor coupled to the at least one control signal line and the at least one data signal line, wherein the capacitance of the... Agent: Pvf -- Sun Microsystems Inc. C/o Park, Vaughan & Fleming LLP

20090102574 - Matrix balun: An active input matrix balun and a method for the same. The matrix balun has one input transmission line with an RF-in terminal for receiving a single ended RF-in signal and a first output transmission line with a first RF-out terminal and an adjacent second output transmission line with a... Agent: Venable LLP

20090102576 - Balun circuit and frequency converting apparatus: A balun circuit is provided that includes a first coupling line in which an unbalanced line thereof is connected to a first terminal and a balanced line thereof is electrically connected to a second terminal, a second coupling line in which an unbalanced line thereof is electrically connected to the... Agent: Jianq Chyun Intellectual Property Office

20090102575 - Direct coaxial interface for circuits: In general, in accordance with an exemplary aspect of the present invention, a low-loss interface for connecting an integrated circuit such as a monolithic microwave integrated circuit to an energy transmission device such as a waveguide is disclosed. In one exemplary embodiment, the interface comprises a coaxial structure such as... Agent: Snell & Wilmer L.L.P. (main)

20090102577 - Compact magic-t using microstrip-slotline transitions: The design of a compact low-loss Magic-T is described. The planar Magic-T incorporates a compact microstrip-slotline tee junction and small microstrip-slotline transition area to reduce slotline radiation. The Magic-T produces broadband in-phase and out-of-phase power combiner/divider responses, has low in-band insertion loss, and small in-band phase and amplitude imbalance.... Agent: Nasa Goddard Space Flight Center

20090102578 - Broadband planar magic-t with low phase and amplitude imbalance: A planar Magic-T that incorporates complementary microstrip-slotline tee junction and microstrip-slotline transition area to produce a compact broadband out-of-phase combining structure with minimum loss due to slotline radiation. The Magic-T structure layout is symmetric which causes the structure to be less dependent on the transmission line phase variation. The Magic-T... Agent: Nasa Goddard Space Flight Center

20090102579 - Frequency division coupling circuit and applications thereof: A frequency division coupling circuit includes first and second trace segments and first and second segregation modules. The first and second trace segments function to convey a first signal in a first frequency range and the first trace segment conveys a second signal in a second frequency range. A first... Agent: Garlick Harrison & Markison

20090102580 - Systems, methods, and apparatus for electrical filters and input/output systems: An electronic filtering device includes continuous trace on a dielectric substrate and a dissipation layer communicatively coupled to the trace. The dissipation layer may include disconnected metal particles, which may be embedded in a substrate, for example in an epoxy. The continuous trace may be meandering, for example crenulated, coil... Agent: Seed Intellectual Property Law Group PLLC

20090102582 - Resonator device with shorted stub and mim-capacitor: At microwave frequencies, the use of transmission lines as a design element becomes interesting due to the small wavelengths. Inductors as part of an on-chip resonator can be made with a shorted stub, which is a transmission line, shorted at the end. Placing a MIM-capacitor at the beginning of the... Agent: Nxp, B.v. Nxp Intellectual Property Department

20090096556 - High-frequency electric field coupler, communication system, and communication apparatus: A high-frequency electric field coupler is provided for use in a contactless communication system propagating high frequency signals in a wide band utilizing electric field coupling. The coupler includes a coupling electrode and a resonance unit operating to increase the amplitude of an electrical charge accumulated at the coupling electrode... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20090096555 - Motherboard: A motherboard includes a signal control chip, a signal switch chip connected to the signal control chip via a plurality of first transmission lines, and a complex connector configured for connecting to a first type of transmission device or a second type of transmission device. The signal control chip is... Agent: PCe Industry, Inc. Att. Steven Reiss

20090096547 - Acoustically coupled resonators and method of making the same: An apparatus includes a substrate with a cavity and a two-stage resonator filter fabricated over the cavity. The two-stage resonator filter includes a first stage and a second stage. The first stage includes a first resonator and a second resonator, the second resonator acoustically coupled to the first resonator. The... Agent: Kathy Manke Avago Technologies Limited

20090096548 - Tuning and compensation technique for semiconductor bulk resonators: One or more pn junctions are provided on the resonating bar of a semiconductor bulk resonator. When a reverse bias is imposed upon the pn junction(s), a variable depletion layer results and, hence, capacitance. The depletion layer capacitance allows for variable coupling to the resonator bar. The variable coupling allows... Agent: Stallman & Pollock LLP

20090096549 - Apparatus with acoustically coupled baw resonators and a method for matching impedances: An apparatus includes a first bulk acoustic wave (BAW) device including a first impedance and a second BAW device including a second impedance, wherein the first and second impedances are different and the first and second BAW devices are acoustically coupled.... Agent: Kathy Manke Avago Technologies Limited

20090096550 - Bulk acoustic wave device: An apparatus includes a stacked crystal filter and a bulk acoustic wave resonator, which are acoustically coupled.... Agent: Kathy Manke Avago Technologies Limited

20090096551 - Surface acoustic wave element, surface acoustic wave apparatus, and communication apparatus: The invention provides a surface acoustic wave element having improved heat dissipation and power durability. These characteristics are achieved by configuring the SAW such that either of an input or ground electrode is disposed between serial arm portions of the SAW comprising resonators.... Agent: Birch Stewart Kolasch & Birch

20090096552 - Overlay electromagnetic bandgap (ebg) structure and method of manufacturing the same: Provided is an electromagnetic bandgap (EBG) structure, and particularly, an overlay EBG structure in which a plurality of vias and a plurality of plates are formed at intervals on a central signal line in such a manner that the vias and plates extend vertically from a substrate in order to... Agent: Sughrue Mion, PLLC

20090096553 - Hf antenna system for magnetic resonance measurements: The invention relates to an HF-antenna system for carrying out and/or detecting a magnetic resonance in an object exposed to a main magnetic field which orients the object spins in a desired longitudinal direction (z) comprising at least one first antenna element (1) provided with several conducting sections (11, 12,... Agent: Drinker Biddle & Reath Attn: Intellectual Property Group

20090096554 - 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: Steinfl & Bruno

20090091401 - Method and apparatus for facilitating signal transmission using differential transmission lines: The illustrative embodiments described herein provide an apparatus and method for facilitating signal transmission using differential transmission lines. The apparatus includes a first differential transmission line. The first differential transmission line includes a first plurality of conductors. The first plurality of conductors includes a set of conductors. The apparatus also... Agent: Ibm Corp (ya) C/o Yee & Associates PC

20090091402 - Compact stripline low frequency band reject filter: A low frequency reject filter element is formed on a printed circuit board that utilizes the fact that power transmission in a waveguide is cut-off below a certain frequency. A quasi waveguide cavity is formed in printed circuit board using the top and bottom ground plane of the stripline circuit... Agent: Davidson Berquist Jackson & Gowdey LLP

20090091403 - Contactless transmission of a differential signal between a transmitter and a receiver: A method for the contactless transmission of at least one differential signal between a transmitter and a receiver given the existence of at least one common-mode noise signal, which has a low frequency in comparison with at least one signal to be transmitted, is provided. The suppression of at least... Agent: Brinks Hofer Gilson & Lione

20090091404 - Acoustic wave filter device and duplexer: An acoustic wave filter device includes first to fourth longitudinally coupled resonator type surface acoustic wave filters that are configured such that the first and second longitudinally coupled resonator type surface acoustic wave filters are connected to a first balanced signal terminal, the third and fourth longitudinally coupled resonator type... Agent: Murata Manufacturing Company, Ltd. C/o Keating & Bennett, LLP

20090091405 - Resonator, method for manufacturing filter by using resonator and filter manufactured by the same method: There are provided a resonator for use in a filter, which interprets and reduces intermodulation distortion by analyzing characteristics of current density occurring at resonance and linear and nonlinear characteristics of the filter, a method for manufacturing filters by using the resonator and a filter manufactured by the method. The... Agent: Lowe Hauptman Ham & Berner, LLP

20090091406 - Compact via transmission line for printed circuit board and design method of the same: A compact via transmission line for a printed circuit board having preferred characteristic impedance and capable of miniaturizing the printed circuit board including a multilayer printed circuit board, and extending the frequency range of a via transmission line mounted on the printed circuit board, and a design method of the... Agent: Young & Thompson

20090085688 - Semiconductor circuit, and computing device and communications device using the same: In a semiconductor circuit, an impedance adjustment circuit having the characteristics same as those of a circuit having the nonlinear resistance characteristics is configured to include an operating point calculation circuit automatically calculating an operating point with a reference resistance through feedback control, and an impedance calculation circuit calculating the... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090085696 - Method and apparatus for rf signal transmission in a slider phone: A method and apparatus for internal RF signal transmission between the fixed base portion and the sliding portion of a mobile communication terminal using capacitive coupling are disclosed. The method and apparatus provide internal RF signal transmission when the sliding portion is open (SO) and when the sliding portion is... Agent: Prass LLP

20090085697 - Method and apparatus for analog validation of high speed buses using electromagnetic couplers: In at least one embodiment an apparatus is provided that includes an electromagnetic coupler to provide sampled electromagnetic signals and an electronics component to receive the sampled electromagnetic signals from the electromagnetic coupler, to amplify and recover a derivative-like output signal, and to provide recovered sampled electromagnetic signals to an... Agent: Intel Corporation C/o Intellevate, LLC

20090085689 - Digitally tuned, integrated baluns with enhanced linearity for multi-band radio applications: An integrated balun includes a low pass filter and a high pass filter that are formed on a semiconductor chip using tunable reactive elements. The outputs of the low pass filter and the high pass filter are tied together to form the single ended output of the balun. The inputs... Agent: The Law Offices Of John C. Scott, LLC C/o Intellevele, LLC

20090085690 - Switching device, and testing apparatus: Provided is a switching apparatus connecting a transmission line designated among transmission lines, between input and output terminals, and preventing a signal at the terminal from leaking to a control wiring, becoming a noise, and being superposed onto a signal at the other end. The switching apparatus includes: a plurality... Agent: Jianq Chyun Intellectual Property Office

20090085691 - Printed circuit board with embedded chip capacitor and chip capacitor embedment method: A printed circuit board having an embedded chip capacitor is disclosed. According to an embodiment of the present invention, a printed circuit board having an embedded chip capacitor can include a first conductive layer; a second conductive layer, placed away from the first conductive layer; a chip capacitor, placed between... Agent: Staas & Halsey LLP

20090085692 - Elastic wave filter: In an elastic wave filter in which an IDT is configured in a tapered shape, an object of the present invention is to provide a technology capable of suppressing deterioration of attenuation characteristics due to refraction and the like of the elastic wave and also suppressing loss. Then, an input... Agent: Jordan And Hamburg LLP

20090085693 - Filter: A filter being small and having a narrowband filter characteristic is achieved using interdigital-coupled resonators. A first resonator and a second resonator are configured using interdigital-coupled quarter-wavelength resonators respectively. In addition, the first resonator and the second resonator are disposed so as to extend along directions intersecting with each other... Agent: Oliff & Berridge, PLC

20090085694 - Low pass metal powder filter: A low pass filter having a coaxial structure of an inner conductor, an outer conductor and a metal powder composite interposed between the inner and outer conductor. Embodiments include a 50Ω characteristic impedance. The metal powder can be bronze, copper or other metals, mixed in an epoxy carrier.... Agent: Whitham, Curtis & Christofferson, P.C.

20090085695 - Ferrite-piezoelectric microwave devices: Devices for modification of a microwave signal using a magnetically saturated ferrite magnetoelectric device with electrical control are disclosed. The device is useful for microwave resonators, band pass filters, delay lines and phase shifters.... Agent: Ian C. Mcleod Mcleod & Moyne, P.C.