Wave transmission lines and networks inventions 07/08

20080180188 - Microfluidic apparatuses with nanochannels: In some embodiments of the present invention, the buried silicon oxide technology is employed in the fabrication of fluid channels, particularly nanochannels. For example, a fluid channel can be made in a buried silicon oxide layer by etching the buried oxide layer with a method that selectively removes silicon oxide... Agent: Agilent Technologies Inc.

20080180189 - Phase shifter and bit phase shifter using the same: A phase shifter includes a first signal path in which a first unit is disposed to advance a phase of a signal; a second signal path in which a second unit with no shunt capacitor is disposed to change the phase of the signal such that the changed phase is... Agent: Sughrue Mion, PLLC

20080180190 - Phase shifter circuit: A full range phase shifter circuit includes a power divider, a hybrid coupler, a differential phase shifter, a power combiner and switched attenuators. The power divider, hybrid coupler, differential phase shifter and power combiner comprise lumped elements and can be integrated in semiconductor processes, decreasing the circuit size of the... Agent: Joe Mckinney Muncy

20080180191 - Variable phase shifter: A variable phase shifter is provided. In the variable phase shifter, a fixed substrate, which is a dielectric substrate, is fixedly mounted in a housing and has at least one arc-shaped microstrip line on one surface thereof. A rotation substrate, which is a dielectric substrate, is rotatably mounted in the... Agent: Cha & Reiter, LLC

20080180192 - Layered low-pass filter: A layered low-pass filter includes: a first coil and a second coil that are connected in series and that are located between an input terminal and an output terminal in terms of circuit configuration; and a capacitor located between a ground and a node between the first and second coils... Agent: Oliff & Berridge, PLC

20080180193 - Dual mode piezoelectric filter, method of manufacturing the same, high frequency circuit component and communication device using the same: A dual mode piezoelectric filter includes a piezoelectric material layer composed of a piezoelectric thin film of the high-cut type formed on a substrate, a first electrode and a second electrode formed on one of the major surfaces of the piezoelectric material layer with a gap provided therebetween, a third... Agent: Hamre, Schumann, Mueller & Larson P.C.

20080174380 - Method and circuit for providing rf isolation of a power source and an rf device employing such a circuit: A radio frequency (RF) device includes electronic circuitry having a radio frequency section and power connectors for electrically connecting the electronic circuitry to at least one power source for providing the device with power. At least one quarter wavelength transmission line is connected between the power connectors and the electronic... Agent: Kenyon & Kenyon LLP

20080174381 - Two-port isolator, characteristic adjusting method therefor, and communication apparatus: A two-port isolator includes a metal case having an upper metal case portion and a lower metal case portion, a resin case integrated with the case, a permanent magnet member, a center electrode assembly including a ferrite member and center electrodes, and a laminated base. The intersection angle between the... Agent: Murata Manufacturing Company, Ltd. C/o Keating & Bennett, LLP

20080174382 - System method and apparatus for a three-line balun with power amplifier bias: A balun that includes a first conductor, a second conductor, and a third conductor. The first conductor has a first length. The first conductor also has a first end connected to a first balanced power amplifier output port. The second conductor has substantially the same first length. The second conductor... Agent: Sterne, Kessler, Goldstein & Fox P.l.l.c.

20080174383 - Differential impedance matching circuit and method with harmonic suppression: Matching network circuits and a method are shown for suppressing a harmonic frequency in a matching network. The circuits and method involve impedance matching first and second differential input nodes to a single ended output node using a first reactive impedance selected to pass a resonant frequency. They also involve... Agent: Francissen Patent Law, P.c.

20080174384 - Translational switching system and signal distribution system employing same: A translational switch system includes first and second translational switches, and a signal bus coupled therebetween. The first translational switch includes one or more inputs configured to receive a respective one or more first input signals, a first plurality of outputs, and a second plurality of outputs. The second translational... Agent: Clifford B. Perry

20080174385 - Filter combiner: The invention presents a filter combiner, in particular for mobile communications applications, adapted to be connected to an antenna (12), comprising a first directional coupler (13), connected to at least one first filter (15, 15a, 15b), to an antenna branch (12a), to at least one second filter (17, 17a, 17b),... Agent: Ericsson Inc.

20080174386 - Diplexer and multiplexer using the same: A diplexer provides a high degree of design freedom for satisfying the requirements of electric characteristics so as to realize desired characteristics and at the same time can be downsized and a multiplexer is realized by using such a diplexer. The diplexer includes a filter having a first pass band... Agent: Stites & Harbison Pllc

20080174387 - Filter circuit for reducing emi of differential signal: A filter circuit for reducing electro magnetic interference (EMI) of a differential signal is disclosed. The circuit includes a first passive component set, a second passive component set, and a third passive component set. The first passive component set has a first input/output side and a second input/output side. The... Agent: Jianq Chyun Intellectual Property Office

20080174388 - Compact power-agile filter, particularly for radiocommunication system amplification module: The invention relates to a compact power-agile filter. The filter is a capacitance-weight filter comprising two electromagnetically-coupled oscillating circuits. Each oscillating circuit comprises capacitance weights. Each capacitance weight is controlled by signals. The filter comprises at least one motherboard and one daughterboard which are physically separate. The daughterboard comprises the... Agent: Lowe Hauptman & Berner, LLP

20080174389 - Piezoelectric resonator and piezoelectric thin-film filter: A piezoelectric resonator and a piezoelectric thin-film filter including the piezoelectric resonator. The piezoelectric resonator includes a piezoelectric layer disposed between a pair of conductive layers to form a vibrating region. Outer edges of the vibrating region each have a waveform. The vibrating region includes a peripheral portion extending along... Agent: Dickstein Shapiro LLP

20080174390 - Micro-switching device and method of manufacturing the same: A micro-switching device includes a fixing portion, a movable portion, a first electrode with first and second contacts, a second electrode with a third contact contacting the first contact, and a third electrode with a fourth contact opposing the second contact. In manufacturing the micro-switching device., the first electrode is... Agent: Kratz, Quintos & Hanson, LLP

20080169878 - Low loss combiner for narrowband and wideband rf signals: A combiner includes a circulator having a series of at least three sequential ports such that a signal input into a port is transmitted as an output at the next sequential port. A bandpass filter has a pass band and is coupled to a first port of the circulator such... Agent: Wood, Herron & Evans, LLP

20080169879 - Tunable microwave devices with auto-adjusting matching circuit: An embodiment of the present invention provides an apparatus, comprising a filter; and a matching network coupled to the filter, the matching network including a plurality of voltage tunable dielectric varactors.... Agent: Bill Tucker

20080169880 - Tunable microwave devices with auto-adjusting matching circuit: An embodiment of the present invention provides an apparatus, comprising a delay line and a matching network coupled to the delay line, the matching network including a plurality of voltage tunable dielectric varactors.... Agent: James S. Finn

20080169888 - System and method for effectively performing a clock signal distribution procedure: A system and method for effectively performing a clock signal distribution procedure includes a clock generator configured to generate one or more clock signals that include electronic timing information. A clock load utilizes the electronic timing information from the clock signals to synchronize appropriate system processes. Capacitive coupling means are... Agent: Gregory J. Koerner Redwood Patent Law

20080169881 - Radio frequency assembly and a multiport switch having the same: An RF assembly of a multiport switch is disclosed. The RF assembly includes an RF cavity housing and a cover. The RF cavity housing includes a common port defined by a cavity in a surface of the RF cavity housing and at least another port defined by a trough in... Agent: Agilent Technologies Inc.

20080169882 - Filter including acoustic wave filters connected in parallel: A filter includes: a first acoustic wave filter having acoustic wave filters cascaded, an input stage of the acoustic wave filters including a first multimode filter; a second acoustic wave filter having acoustic wave filters cascaded, an input stage of these acoustic wave filters including a second multimode filter having... Agent: Arent Fox LLP

20080169883 - Lc resonant circuit: An LC resonant circuit. The LC resonant circuit comprises an inductor and a conductor. The inductor is an electrode plate of a capacitor. The conductor is over, under, or on both sides of the inductor and used as the other electrode plate of the capacitor.... Agent: Joe Mckinney Muncy

20080169885 - Piezoelectric thin-film resonator, acoustic wave device and method for fabricating the acoustic wave device: A piezoelectric thin-film resonator includes: a lower electrode provided on a substrate; a piezoelectric film provided on the lower electrode; an upper electrode provided on the piezoelectric film so as to face the lower electrode across the piezoelectric film to thus define a resonance portion; and a weight load film... Agent: Arent Fox LLP

20080169884 - Thin film bulk acoustic wave resonator structure and filter, and radio-frequency module using them: A thin film bulk acoustic wave (BAW) resonator structure and filter which can be fabricated by inexpensive manufacturing techniques and in smaller size than conventional such products are to be provided. The BAW resonator structure and filter have a substrate, a first BAW resonator placed over the substrate, an acoustic... Agent: Miles & Stockbridge PC

20080169886 - Acoustic wave filter device: In an acoustic wave filter device, a first filter circuit portion includes a first inductor provided in a series arm that couples an input terminal and an output terminal is serially connected to a first acoustic wave resonator, and a second filter circuit portion includes a second inductor provided in... Agent: Murata Manufacturing Company, Ltd. C/o Keating & Bennett, LLP

20080169887 - Integrated bandpass/bandstop coupled line filter: An apparatus and method for attenuating selected frequency bands in a microstrip filter having a plurality of microstrip resonators. The filter comprises plural resonators, a first of the plural resonators is operatively connected to a first feed point and a second of the plural resonators is operatively connected to a... Agent: Duane Morris LLP

20080164959 - Dc-dc converter utilizing respectively separate low-pass filters in feedback control and output voltage smoothing and method of designing the dc-dc converter: A DC-DC converter includes a switching circuit controlled to convert an input DC voltage to a voltage having a repetitively varying waveform, a first low-pass filter circuit that includes a first capacitor and which smoothes the output voltage from the switching circuit, a control circuit applying feedback control to the... Agent: Harness, Dickey & Pierce, P.L.C

20080164960 - Endoscopic capsule: A resonator for magnetic resonance applications has a conductor element proceeding in an extension direction, that operates with a resonance current at a resonance frequency oscillating therein in the extension direction. The conductor element is tuned to the resonance frequency and has an overall length in the extension direction that... Agent: Schiff Hardin, LLP Patent Department

20080157896 - Ultra broadband 10-w cw integrated limiter: The invention provides a novel broadband power limiter having improved frequency characteristics and power capacity, suitable for use with GaAs low-noise amplifier circuits. The power limiter includes a shunt diode circuit and two impedance transformers. The first transformer is a step-down impedance transformer connected between the shunt diode circuit and... Agent: Tyco Technology Resources

20080157902 - Circular and/or linear polarity format data receiving apparatus: The invention relates to the provision of apparatus and a method which allows the reception of broadcast data in both linear and circular polarity data formats and allow data from both formats to be available for selection and usage to generate a user selected channel. The apparatus includes an LNB... Agent: Nixon Peabody LLP - Patent Group

20080157903 - Ultra-high bandwidth interconnect for data transmission: In some embodiments an interconnect includes a waveguide and a transmission line coupled in parallel with the waveguide. Other embodiments are described and claimed.... Agent: Intel Corporation C/o Intellevate, Llc

20080157897 - Method and system for fabrication of integrated tunable/switchable passive microwave and millimeter wave modules: An interconnect module and a method of manufacturing the same. The method of making an interconnect module on a substrate comprises forming an interconnect section on the substrate. The interconnect section comprises at least two metal interconnect layers separated by a dielectric layer. The method further comprises forming a passive... Agent: Knobbe Martens Olson & Bear LLP

20080157898 - Low-pass step attenuator: A filter circuit is constructed as a triplex filter having a high-pass filter, a low-pass filter with attenuation in the passband, and a second low-pass filter without attenuation in the passband. The filter circuit has a frequency response with a high-pass portion, a flat loss portion, and a low-pass portion.... Agent: Alston & Bird LLP

20080157899 - High frequency filter with blocking circuit coupling: An improved high frequency filter displays the following features: the high frequency filter displays transmission behavior with a coupling impedance resonance having at least one blocking point at a frequency, the blocking point at the frequency being adjustable by presetting and/or preselecting a defined capacitive and inductive coupling between two... Agent: Nixon & Vanderhye, Pc

20080157900 - Integrated circuit arrangement to set a phase difference: h) whereby each controllable phase-influencing means (13; 23; 33; 43;) has at least one first tunable capacitive unit (16; 16p, 16n; 46p, 46n), which is connected to the first transmission line and the control unit and is designed to delay the first signal depending on one of the first control... Agent: Muncy, Geissler, Olds & Lowe, Pllc

20080157901 - Device for the propagation of electromagnetic waves with modulated dielectric constant: A microstrip structure comprising a conductive layer whose width varies in such a way as to obtain an effective dielectric constant, which presents a sinusoidal shape modulation. The propagation of electromagnetic waves in materials with electromagnetic properties, which varies along their propagation direction having desirable characteristics, such as the presence... Agent: Paul A. Fattibene Fattibene & Fattibene