Wave transmission lines and networks inventions 07/06

20060164179 - Multilayer interconnection board: A multilayer interconnection board (10) comprises a dielectric substrate (11), a through-hole (15), a signal line (12) having a large width section (12A) and a small width section (12B) connected with the through-hole (15), and a ground layer (13, 14). A length L (mm) of the small width section (12B)...

20060164180 - Dual gate finfet radio frequency switch and mixer: A method modifies dual gate transistor into a radio frequency switch. The method attaches a first signal input to a first gate of the transistor, attaches a second signal input to the source or drain of the transistor, attaches a common gate contact to the first gate and the second...

20060164181 - Coupling flatness compensated directional coupler: A directional coupler that has improved coupling flatness. The directional coupler includes a first, second and third coupler. Each of the couplers has an input port, an output port, a forward coupled port and a reverse coupled port. The forward coupled port of the first coupler is connected to the...

20060164183 - Bulk acoustic wave resonator and circuit comprising same: The invention relates to a resonator operating with bulk acoustic waves (BAW resonator, BAW=Bulk Acoustic Wave) and band-pass filters constructed of such resonators. To increase the edge steepness of the transmission band of a BAW band-pass filter, the invention proposes reducing the effective coupling of a BAW resonator by using...

20060164182 - Surface acoustic wave filter: A surface acoustic wave filter having at least one transmission line of which one end of a plurality of the transmission lines is connected to the surface acoustic wave element and the other end thereof is connected to a ground, and the transmission lines being divided by a transmission line...

20060164184 - Surface acoustic wave filter, balanced type circuit, and communication apparatus: A surface acoustic wave filter including a piezoelectric substrate, IDT electrodes which are formed on the piezoelectric substrate and are connected to balanced type terminals. Further, IDT electrodes are formed on the piezoelectric substrate and are connected to an unbalanced type terminal, connection electrodes of connecting the IDT electrodes, the...

20060164185 - Phase shifter having power dividing function: Disclosed is a phase shifter having a power dividing function. The phase shifter includes: an input port for receiving a radio frequency (RF) signal; a power dividing unit for dividing the RF signal into a first divided signal of which phase is to be varied and a second divided signal...

20060164186 - Resonator and component with hermetic encapsulation: Proposed is a resonator which works with bulk acoustic waves and is based on a layer structure known in the art, which is arranged over a substrate. According to the invention, the total surface of the layer structure, including all resonators contained therein, is covered with a dielectric layer and...

20060164187 - Band filter using film bulk acoustic resonator and method of fabricating the same: A band filter using a film bulk acoustic resonator and a method of fabricating the same. The method includes the steps of forming a membrane layer on a substrate, forming a plurality of resonators on an upper surface of the membrane layer, depositing a mask layer on a lower surface...

20060164188 - Planar filter, semiconductor device and radio unit: A planar filter has first and second U-shaped open transmission line resonators (103, 105) and a crank-shaped open transmission line resonator (104), so that it is possible to decrease an area to be virtually occupied by the filter on a dielectric substrate (110) and enhance the attenuation characteristic....

20060164189 - Strip line device, member to be mounted on printed wiring board, circuit board, semiconductor package, and its fabricating method: Electromagnetic waves leaking from a power distribution circuit provided on a printed wiring substrate or in a semiconductor package are suppressed, and degradation of the waveform of a signal generated by a high-speed digital circuit. A strip line device comprises an elongated metal plate (10) having a valve action and...

20060164190 - Coaxial waveguide microstructures and methods of formation thereof: Provided are coaxial waveguide microstructures. The microstructures include a substrate and a coaxial waveguide disposed above the substrate. The coaxial waveguide includes: a center conductor; an outer conductor including one or more walls, spaced apart from and disposed around the center conductor; one or more dielectric support members for supporting...

20060158277 - Tunable, maximum power output, frequency harmonic comb generator: A comb frequency generator that is tunable to vary the width of the pulses in the output signal and achieve a maximum power output at different harmonic frequencies. A wavefront compression device receives a sinusoidal input signal and provides wavefront compression to create a compressed signal having a series of...

20060158278 - Differential signal termination block: A termination block provides a pair of coaxial connectors for a differential signal source and a pair of coaxial connectors for connection to a single ended coaxial input. Passive electrical components provide impedance matching while maintaining phase-matched true and complement signal paths for the differential signal....

20060158279 - Non-reciprocal circuit device: A non-reciprocal circuit device is provided with a remarkably smaller size than before and can form a sufficiently large filet and improve reliability of soldering strength at mounting. A gyromagnetic component, a permanent magnet, yokes are included. The permanent magnet is provided at least on one face side of the...

20060158280 - High frequency and wide band impedance matching via: A high frequency and wide band impedance matching via is provided. As an application to multi-layer printed circuit boards, for example, the multi-layer circuit board has several signal transmission traces, several ground layers, signal transmission vias and ground vias. The signal transmission traces and the ground layers are sited on...

20060158281 - Saw ladder filter: A SAW filter useful in cellular telephone communications includes SAW resonator elements provided in a series and parallel branches for forming a ladder filter network, and SAW resonator elements connected in parallel and provided in the series branch of the SAW filter for providing improved ESD protection to the SAW...

20060158282 - Filters with improved rejection band performance: A filter is delineated that may have an input for receiving an input signal including a plurality of different frequencies and an output for passing an output signal within a first frequency band. The filter may include a circuit coupled between the input of the filter and the output of...

20060158283 - Piezoelectric thin film resonators: A piezoelectric thin film resonator is formed on a base substrate such as made of Si in which the resonance frequency is substantially determined by the lateral size not by the thickness of the resonator, whereby a resonator for use in TCXO, etc. is provided by the thin film technique,...

20060158284 - Method of manufacturing vertically separated acoustic filters and resonators: An apparatus including vertically separated acoustic resonators are disclosed. The apparatus includes a first acoustic resonator on a substrate and a second acoustic resonator vertically separated above the first acoustic resonator. Because the resonators are vertically separated above another, total area required to implement the resonators is reduced thereby savings...

20060158285 - Partial suspended open-line resonator for parallel coupled line filters: The present invention disclosed a partial-suspended open-line resonator for parallel-coupled line filter for size shrinking and well resonant response. The partial-suspended open-line resonator comprises one open conductive line, one etched ground structure having a lattice adjacent to the conductive line, wherein the lattice is formed on a ground plane. Furthermore,...

20060158286 - Defected ground structure for coplanar waveguides: A defected ground structure for coplanar waveguides comprises two ground planes and one wire positioning between two ground planes. A gap is between each ground plane and the wire, respectively. Each ground plane is symmetrical to the other, and has at least one defected structure. More, each defected structure includes...

20060152296 - Non-reciprocal circuit element: The invention relates to a non-reciprocal circuit element (1) having a plurality of strip conductor elements (2) insulated electrically from one another, which conductor elements are embedded in a multilayer core (3) of ferrimagnetic material and are arranged in superposed conductor planes in such a way that the conductor elements...

20060152297 - Method for conversion of waveguide modes, mode-converting arrangement and antenna arrangement: The invents relates to a method for conversion of waveguide modes from a mode of type TM01 to mode of type TE11 for transmission of power within the microwave range. The invention also relates to a mode-converting arrangement and an antenna arrangement with such a mode converting arrangement. The mode-converting...

20060152298 - Transition between a rectangular waveguide and a microstrip line: The transition between a rectangular waveguide and a microstrip line consists of a ribbed rectangular waveguide realised in a foam bar in synthetic material of which the metallized base under the rib continues in the form of a foam plate constituting a substrate for the microstrip line, the rib having...

20060152299 - Printed circuit board for connection with an external connector: A multi-layered printed circuit board (PCB) for connection with an external connector. The external connector has a signal pin and an outer conductor. The printed circuit board includes a first conductive reference plane, a signal trace, a second conductive reference plane, a characteristic impedance member, and a third conductive reference...

20060152300 - Semiconductor device: At least one of wiring areas divided by substrate dividing slits includes a region on which none of the strip conductors is located, the region having a U-shape as viewed in plan and enclosing one of the strip conductors on three sides. The length of the enclosed strip conductor is...

20060152301 - Switching circuit for an electromagnetic source for the generation of acoustic waves: A switching circuit for an electromagnetic source for generating acoustic waves has at least one first capacitor connected in parallel with a series circuit formed by a second capacitor and an electronic switch. The switching circuit is connected to a coil of the electromagnetic source, and the first and second...

20060152303 - Electrically tunable notch filters: An embodiment of the present invention provides n apparatus, comprising a wireless telephone handset comprising an antenna connection; a diplexer coupled to the antenna connection; a transmit section connected to a first port of the diplexer; a receive section connected to a second port of the diplexer; and wherein the...

20060152302 - Switching circuit for an electromagnetic source for the generation of acoustic waves: Electrodes (2) and (3) are formed on the front face (1A) and the rear face (1B) of a dielectric substrate (1). Fan-shaped apertures (4A) and (4B) forming a resonator (4) are formed in the electrodes (2) and (3) such that the fan-shaped aperture (4A) opposes the fan-shaped aperture (4B). Accordingly,...

20060152304 - Electrically tunable notch filters: This invention provides a notch filter including a main transmission line, a coupling mechanism, and at least one electrically tunable resonator coupled to the transmission line through the coupling mechanism. A tunable dielectric varactor or a microelectromechanical variable capacitor is provided in each of the resonators....

20060152305 - Vertically separated acoustic filters and resonators: An apparatus including vertically separated acoustic resonators are disclosed. The apparatus includes a first acoustic resonator on a substrate and a second acoustic resonator vertically separated above the first acoustic resonator. Because the resonators are vertically separated above another, total area required to implement the resonators is reduced thereby savings...

20060152306 - Dielectric resonator, dielectric resonator frequency adjusting method, and dielectric resonator integrated circuit: An oscillator comprising a dielectric resonator (DR) has a high controllability and reproducibility of coupling between the dielectric resonator (DR) and an oscillation circuit, and an integrated circuit is reduced in size. The dielectric resonator (DR) (1) is composed of a dielectric substrate (2), grounding conductive layers (3a, 3b) formed...

20060152307 - High-frequency module: The present invention provides an RF module capable of converting electromagnetic waves in the TE mode to balanced electromagnetic waves in the TEM mode without adjustment and outputting the balanced electromagnetic waves while easily realizing miniaturization. The RF module includes: a waveguide (3) in which a half-wavelength TE mode resonator...

20060145777 - Junction between a microstrip line and a waveguide: An arrangement for a junction between a microstripline and a waveguide is provided. The arrangement includes a microstripline fitted on the upper face of a dielectric substrate, a waveguide fitted on the upper face of the substrate and has an opening on at least one end surface and has a...

20060145778 - Waveguide - printed wiring board (pwb) interconnection: An RF interconnection between RF Printed Wiring Boards (PWBs) includes a waveguide transmission line coupled between the RF PWBs. The waveguide feeds are provided as integral parts of each PWB. In one embodiment, the waveguide interconnecting the PWBs is provided as an integral part of a support structure which supports...

20060145779 - High frequency circuit: A high frequency circuit having shunt circuits between a high frequency transmission path 13 and GND, has, for example, two shunt circuits 11 and 12 including active elements 14 and 15 and impedance elements (L1, L2, C). These shunt circuits 11 and 12 are configured in such a manner that...

20060145780 - High power combiner/divider: A power combiner/divider is disclosed that employs triaxial transmission line structures operatively coupled to provide a desired number of input/output ports. A balun is operatively coupled to the triaxial transmission line structures, and is adapted to couple out unbalanced currents flowing therebetween....

20060145781 - Dual band full duplex mobile radio: A dual band full duplex mobile radio is provided that includes a transmit portion including a dual band filter and a receive portion including a dual band filter. The dual band full duplex mobile radio further includes a circulator connecting the transmit portion and the receive portion and configured to...

20060145782 - Multiplexers employing bandpass-filter architectures: A multiplexer, such as a diplexer, is delineated. The multiplexer may be employed in a communications system that may communicate in multiple frequency bands within a predefined range of frequencies, e.g., 2400 MHz-4900 MHz. The communications system may operate in a network, such as a wireless local area network, without...

20060145783 - Method and apparatus for controlling power division in a travelling-wave antenna: This publication discloses a method and apparatus for feeding signal power to an antenna array comprising several antenna elements (1-4). According to the method, the signal power is fed to the antenna elements (1-4) over two transmission lines (a-b) and (c-d), in which case the divisions (e) of one of...

20060145784 - Phase shifter device: A phase shifter device comprising a substrate defining a slot line waveguide having first and second ends and being operably coupled to a microstrip waveguide and a shorting patch is described. The microstrip waveguide and shorting patch are moveable along the slot line waveguide so as to vary the distance...

20060145785 - Piezoelectric resonator and method for manufacturing the same: A piezoelectric resonator includes a substrate, an acoustic mirror formed on the substrate and includes alternately stacked first acoustic mirror material layers and second acoustic mirror material layers having higher acoustic impedance than that of the first acoustic mirror material layers, a piezoelectric film formed on the acoustic mirror, a...

20060145786 - Filter assembly: A filter assembly capable of unbalanced to balanced conversion. An unbalanced to balanced conversion unit is coupled to an input terminal for transforming a received unbalanced signal thereat to a balanced signal and a lattice filter coupled between the unbalanced to balanced conversion unit and two output terminals for eliminating...

20060145787 - Super-resolution optical components and left-handed materials thereof: Super-resolution optical components and left-handed materials thereof are provided. A left-handed material includes a substrate, a plurality of deformed split ring resonators (DSRR), and a plurality of metallic bars, wherein the DSRR and the metallic bars are disposed on the substrate with each DSRR and metal bar alternately arranged....

20060145788 - Tuning arrangement: The present invention relates to an improved tuning arrangement to linearise the sensitivity to frequency changes within a certain frequency range in response to tuner displacements relative to a resonator body. The tuning arrangement comprises a tuner and/or resonator having a non-uniform distribution of the effective dielectric permittivity along the...

20060145789 - Method of manufacturing signal processing apparatus: In a signal processing apparatus for transmitting or processing a signal, a substrate has a recessed portion in a surface of the substrate, a first interconnecting conductor is on the substrate, including at least the recessed portion of the substrate, and a dielectric support film is on the substrate opposite...

20060145790 - Constant contact pressure pim interface: An interface that provides minimum changes in contact pressure over a thermal range is disclosed. The interface is a mated joint of given material, typically metallic, joined by a mechanical fastener or fasteners. The fastener(s) create contact pressure at the joint surface wherein the contact pressure variation over a temperature...