Wave transmission lines and networks inventions 08/06

20060192627 - Resonant structure and method for lumped element in nonreciprocal device: A structure according to the present invention relates to the non-reciprocal microwave device such as circulator/isolator and includes the circuit, a ferrite member and a dielectric film. The circuit has three arms, each composed of two branches incorporating multiple strips. The branches are folded over a ferrite and isolated from...

20060192628 - System and method for automatic tuning of a magnetic field generator: An automatic tuning system for a magnetic field generating tuned circuit includes a processor configured to maintain the resonant frequency of a tuned circuit equal to a reference frequency. The tuned circuit is driven by a power amplifier whose output provides an amplified signal at the reference frequency. The tuned...

20060192629 - Apparatus for wideband transmission conversion from coplanar waveguide to parallel transmission line: A transmission line conversion apparatus connecting a parallel transmission line to a coplanar waveguide (CPW) is provided. To this end, the CPW including a transmission line composed of a signal line and a ground line which is formed on one surface of a dielectric substrate, and a parallel transmission line...

20060192630 - Filtering function-equipped high frequency switching circuit: Two lines Ai1 (i=1 or 2) are connected to an input terminal In. The line Ai1 is grounded via a capacitor Ci1. The line Ai1 and a line Bi1 form a coupled line. One end of the line Bi1 is connected to a positive pole of a diode Di1 which...

20060192631 - Dual mode antenna switch module: A dual mode antenna switch module (ASM) comprises a UMTS TX port; a UMTS RX port; and a UMTS duplexer, comprising a common port, a TX port coupled to the UMTS TX port and an RX port coupled to the UMTS RX port. The ASM further comprises an antenna port;...

20060192632 - Front end module: A front end module (2) comprises: a triplexer (11) for separating the AMPS band, the PCS band and the GPS band from one another; a duplexer (12) for separating transmission signals and reception signals in the AMPS band from each other; and a duplexer (13) for separating transmission signals and...

20060192633 - Surface acoustic wave duplexer: A surface acoustic wave branching filter reduces deterioration of the insertion loss and improves the isolation characteristics. The surface acoustic wave filter includes first ends of a first acoustic wave filter, having a relatively low passband, and a second acoustic wave filter, having a relatively high passband, connected to a...

20060192634 - Low profile ceramic rf filter: A low profile ceramic filter for connection to an antenna, a transmitter and a receiver. The filter filters an incoming signal from the antenna to the receiver and an outgoing signal from the transmitter to the antenna. The filter has a ceramic core with through-holes that extend between sides of...

20060192635 - Lead frame and a method for producing a surface mount type piezoelectric vibrator using the same, a resin mold construction of a piezoelectric vibrator, a surface mount type piezoelectric vibrator, and an oscillator, an electronic unit and a wave timepiec: To provide a lead frame that allows the mass production of a small surface mount type piezoelectric vibrator with high reliability and stable quality and a surface mount type piezoelectric vibrator manufacturing method using the lead frame. A lead frame comprising a pair of side frames having a positioning hole,...

20060192636 - Surface acoustic wave filter: A surface acoustic wave filter capable of obtaining a low insertion loss and wide bandwidth characteristic is provided. The surface acoustic wave filter includes a piezoelectric substrate; a pair of reflective electrodes formed on the piezoelectric substrate; and a plurality of comb electrodes formed between the pair of reflective electrodes...

20060192639 - High-frequency filter using coplanar line resonator: A high-frequency filter includes a substrate; a ground conductor disposed on one main surface of the substrate and having an opening; a center conductor making up a coplanar line resonator together with the substrate and the ground conductor; and an input line and an output line each of which has...

20060192638 - Minaturized parallel coupled line filter using lumped capacitors and grounding and fabrication method thereof: A parallel coupled line filter is miniaturized by using lumped capacitors and grounding the capacitors. The parallel coupled line filter includes a parallel coupled line, a first capacitor connected to one of two input ports of the parallel coupled line, and a second capacitor connected to one of two output...

20060192637 - Passive component: A passive component comprising one input electrode layer constituting an input terminal, one output electrode layer constituting an output terminal, and four shield electrode layers constituting shield terminals, all formed in the lowermost dielectric layer by via holes. The input electrode layer is connected electrically with an input-side resonance electrode,...

20060192640 - Production method for chip-form film-forming component: A description is given of a high frequency filter comprising microstrips. The filter comprises at least two resonators (16, 18) which each have, as frequency-determining elements, a first straight microstrip section (28) and a second straight microstrip section (30), which are parallel next to each other, and also a capacitor...

20060186968 - Surface acoustic wave device, duplexer, and communications equipment: A SAW device D1 according to the present invention comprises a ladder-type SAW device T1 for transmission and a ladder-type SAW device R2 for receiving on a main surface of a piezoelectric substrate. The ratio (LT/PT) of the width LT of electrode fingers to the pitch PT between the electrode...

20060186969 - Low-loss filter and frequency multiplexer: A waveguide filter with a signal input port at a first end and a signal output port at a second end includes a dielectric core of moldable material where the outer surface of its periphery has a metal layer with nonmetallized openings positioned at opposite ends of the filter to...

20060186970 - Printed circuit board including a notch filter for attenuating radio frequency interference: A printed circuit board (PCB) including a notch filter, or other suitable filter, is implemented in a communication device for attenuating RFI in transmissions sent from the communication device. The filter includes filter line that runs between at least two conductor layers on the PCB, in a substantially repeating pattern,...

20060186971 - Temperature compensation for silicon mems resonator: Thermally induced frequency variations in a micromechanical resonator are actively or passively mitigated by application of a compensating stiffness, or a compressive/tensile strain. Various composition materials may be selected according to their thermal expansion coefficient and used to form resonator components on a substrate. When exposed to temperature variations, the...

20060186972 - Dielectric resonator with variable diameter through hole and circuit with such dielectric resonators: In accordance with the principles of the present invention, a dielectric resonator is provided with a longitudinal through hole with a diameter that varies as a function of height of the resonator so as to increase the frequency spacing between the fundamental mode and the spurious modes....

20060186973 - Radio frequency integrated circuit having a physical layer portion integrated therein: A ZigBee-compliant radio frequency LSI includes a physical layer portion and a modulator. The physical layer portion has an RF portion, a demodulator, a data transmission and reception control, and a transfer mode determination portion. The transmission and reception control converts, during reception, symbol data received by the demodulator into...

20060181364 - Apparatus for reducing noise: An apparatus for electromagnetically connecting surface equipment to a rotating downhole tool string comprises a plurality of electrical conductors, first and second differential interfaces, and at least one electromagnetic shield. The plurality of electrical conductors have first ends terminating at the surface equipment and second ends terminating at the downhole...

20060181365 - Waveguide to microstrip transition: A first waveguide to microstrip transition, the waveguide having a top, a bottom, a first sidewall, a second sidewall and a closed end. A transition slot normal to a longitudinal axis of the waveguide intersects the top and the first sidewall. A probe having a 90 degree bend is arranged...

20060181366 - Demultiplexer and surface acoustic wave filter: A branching filter includes a first filter with a relatively low passband and having a first temperature property-improvement thin film, and a second filter with a relatively high passband and having a second temperature property-improvement thin film. In the branching filter, the thickness of the first temperature property-improvement thin film...

20060181367 - Phase shifting waveguide and module utilizing the waveguides for beam phase shifting and steering: A waveguide is disclosed that shifts the phase of the signal passing through it. In one embodiment, the waveguide has an impedance structure on its walls that resonates at a frequency lower than the frequency of the signal passing through the waveguide. This causes the structure to present a capacitive...

20060181368 - Mems type resonator, process for fabricating the same and communication unit: A MEMS resonator and a method for manufacturing thereof are provided, in which an adsorption of a beam into a substrate in a wet process when manufacturing a MEMS is prevented and other oscillation modes, which are unnecessary, than a required oscillation mode are not mixed at the time of...

20060181369 - Balanced acoustic wave filter: In an acoustic wave filter device, first and second surface acoustic wave filter sections implemented by longitudinally coupled resonators are arranged on a piezoelectric substrate. The first and second surface acoustic wave filter sections include first to third interdigital transducers and fourth to sixth interdigital transducers, respectively, arranged in a...

20060181370 - Laminated filter with improved stop band attenuation: Disclosed herein is a laminated filter with improved stop band attenuation, which is adopted in devices using a radio frequency, such as communication systems and/or broadcasting systems. The laminated filter forms cross capacitive coupling as feeding lines of input lead and/or output lead are coupled to a resonator pattern, and...

20060176123 - High-frequency switch in multi-layer substrate: A switch module consists of a build-up multi-layer structure and some passive devices. The build-up multi-layer structure has multitudes of conductive layers and dielectric layers laminated upon each another. At least one dielectric layer is interfered between any two conductive layers. Any one passive device is a portion of at...

20060176124 - Mems based rf components and a method of construction thereof: A three dimensional waveguide is integrated with a MEMS structure to control a signal in various RF components. The components include switches, variable capacitors, filters and phase shifters. A controller controls movement of the MEMS structure to control a signal within the component. A method of construction and a method...

20060176125 - Micro-resonator, band-pass filter, semiconductor device and communication apparataus: A micro-resonator of a single structure which outputs signals of two resonance frequencies of mutually opposite phases and in which different resonance frequencies are adjusted independently is provided. The micro-resonator includes: an oscillation portion 6 sustained with a gap by support portions 8 [8A, 8B] and an input electrode 3...

20060176126 - Manufacturing film bulk acoustic resonator filters: A film bulk acoustic resonator filter may be formed with a plurality of interconnected series and shunt film bulk acoustic resonators formed on the same membrane. Each of the film bulk acoustic resonators may be formed from a common lower conductive layer which is defined to form the bottom electrode...

20060176127 - Piezoelectric vibrator and method for producing the same, an oscillator, an electronic unit and a wave timepiece: A piezoelectric vibrator production method is disclosed, which can cope with a reduction in piezoelectric vibrator size and improve assembly accuracy and quality. The method of producing a piezoelectric vibrator having an airtight terminal composed of an annular stem, a lead disposed to pass through the stem and formed of...

20060176128 - Piezoelectric vibrator, surface-mounting type piezoelectric vibrator, oscillator, electronic apparatus and wave clock: There is provided a piezoelectric vibrator which achieves the stabilization of the vibrating characteristics by improving the mount accuracy and mount strength to lead of the vibrating piece as well as be more miniaturized without damaging the electrical insulation. A piezoelectric vibrator includes an airtight terminal having two leads, a...

20060176129 - Dual mode ceramic filter: A dual mode ceramic filter has an enclosure with two cavities separated by a wall, and two TM dual-mode resonators, each TM dual-mode resonator positioned in a corresponding cavity. Each TM dual-mode resonator has first and second modes, and a body having a central portion with a plurality of arms...

20060176130 - High q cavity resonators for microelectronics: A cavity resonator is provided which includes a shielded enclosure enclosing a volume and a unitary conductor disposed within the volume, the unitary conductor having a first inductor portion and a transmission line portion. The transmission line portion is included in a transmission line having a reference conductor separated from...

20060176131 - Rf-resonator tuning: A RF-resonator (1) comprises a resonator body (2) with at least one resonant cavity (3). A conductive sheet material forms a surface area of the resonant cavity (3), the conductive sheet material being deformable by application of a mechanical force for tuning the resonator to a target frequency. A method...

20060170513 - Low temperature co-fired ceramic-metal circulators and isolators: A low temperature cofired ceramic-metal (LTCC-M) integrated circulator comprises at least one ferrite disk situated in a magnetic field. The magnetic field is created by a magnet and directed by a ferrous base plate acting as a magnetic return path. A conductor junction having 3 ports couples radio frequency energy...

20060170514 - Monolithically integrated switchable circuits with mems: A reconfigurable circuit and a related method for its use, the circuit including multiple microelectromechanical systems (MEMS) switches connected between selected points in the circuit. The MEMS switches are controlled to select a desired circuit condition, such as an impedance matching condition, and then the switch conditions may be fused...

20060170515 - Impedance matching circuit, and semiconductor element and radio communication device using the same: An impedance matching circuit and a semiconductor element and a radio communication device using the same which is capable of adjusting bandwidth while permitting it to be constructed on the semiconductor element by reducing its occupation area. Since a reactance compensating distributed constant line (31) compensates reactance (BL, XS) of...

20060170516 - Method of increasing the operating frequency in a series-shunt configured pin diode switch: The vertical placement of the series and shunt PIN diodes of a microline series-shunt PIN diode switch results in an increased upper frequency limit of the switch....

20060170517 - Signal transfer system, signal output circuit board, signal receiving circuit board, signal output method, and signal receiving method: There is provided a signal transfer system that has a driver for outputting a signal, a transmission line for transmitting the signal, an insertion-type attenuator, inserted into the transmission line in series, for largely attenuating the low-frequency signal more than a high-frequency signal and an additional-type attenuator, inserted between the...

20060170518 - Narrow bandpass filter installed on a circuit board for suppressing a high-frequency harmonic wave: The present invention is to provide a narrow bandpass filter installed on a circuit board for suppressing a high-frequency harmonic wave, which uses a metal microstrip method to directly build a microstrip circuit corresponding to a narrow bandpass filter on a circuit board of a wireless communication product and uses...

20060170519 - Baw resonator: A BAW resonator includes a resonator region having a piezo-electric layer between two excitation electrodes, wherein an acoustic standing wave forms when operating the BAW resonator at a resonant frequency. Furthermore, the BAW resonator includes a leaky wave reflection structure formed to reflect leaky waves generated when operating the BAW...

20060170520 - Film bulk acoustic resonator and a method for manufacturing the same: A film bulk acoustic resonator (FBAR) including a substrate having an etched air gap therethrough; a resonance part having a first electrode, a piezoelectric film and a second electrode which are laminated in turn above the air gap; and an etching resistance layer disposed between the air gap and the...

20060170521 - Surface acoustic wave device: A surface acoustic wave device includes a piezoelectric substrate that does not restore the pyroelectric effect, and a method for manufacturing the same. A surface acoustic wave element housed in a package includes a piezoelectric substrate having a specific resistance in the range of about 1.0×107 Ω·cm to about 1.0×1013...

20060170522 - Adjustable filter device: An adjustable filter includes an outer conductor, a first inner conductor, and a second inner conductor. The inner conductors are capacitively coupled on the same axis. The further may further include a third inner conductor capacitively coupled to both the first and second inner conductor. The third inner conductor is...

20060170523 - Tunable active inductor: An active inductor capable of tuning a self-resonant frequency, an inductance, a Q factor, and a peak Q frequency by applying a tunable feedback resistor to a cascode-grounded active inductor is disclosed. The tunable active inductor includes a first transistor having a source connected to a power supply voltage and...