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7423498 Compact multilayer circuit  
A compact multilayer signal processing system. In the illustrative embodiment, the system is adapted for use with microwave signals. The system includes a first mechanism for receiving an input...
7417515 On-chip TX/RX antenna switching  
An on-chip antenna switching scheme for Gigahertz frequencies where for the transmission path a first on-chip switching means is coupled between an on-chip power amplifier and an antenna. In the...
7411471 High-frequency switch  
A high-frequency switch operating in a millimeter wave band that includes a signal path having a λ/4 transmission path, for part of two or more branch signal paths that branch from an input...
7391284 High-frequency switch  
A high-frequency switch includes a transmission terminal, an antenna terminal, a reception terminal, and a voltage-control terminal; a first diode, the cathode thereof being electrically connected...
7373171 Front end module  
A front end module comprises a diplexer, a first duplexer, and a second duplexer. The first duplexer is connected to the diplexer through a first high frequency switch and separates transmission...
7372345 Circuit for connection of at least two signal sources with at least one signal output  
In a circuit for connection of at least two signal sources with at least one signal output, the signal sources are connected with a control unit. The control unit activates or deactivates the...
7368971 High power, high frequency switch circuits using strings of power transistors  
High power, high frequency switches include a transmission line having at least three portions that are serially coupled between an input port and an output port to define at least two nodes and to...
7321274 RF switch  
A RF switch can be used in a wide frequency range and can be manufactured at a low cost. The RF switch changes a signal passing through a waveguide with a variable device that is switchable between...
7286001 High-frequency switching device and semiconductor device  
The first terminals of a plurality of resistor elements are connected to the intermediate connection points of a plurality of FETs connected in series, and a voltage, having a phase opposite to...
7280006 High-frequency switch circuit device  
A high frequency switch circuit device includes: at least one distributed element of at least one transmission line; at least two lumped elements of at least one resistor and at least one...
7250829 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...
7230508 Compact high-power beam hopping switch network  
A switch network for switching network inputs to network outputs includes an initial terminal, an intermediate, and a final terminal layer of switches. The initial terminal layer of switches...
7205864 Distributed matrix switch  
The present invention relates to an electrical space switch matrix having m input ports and n output ports, the switch matrix comprising (m.n)/(i.j) switch blocks, each having i input ports and j...
7199635 High-frequency switching device and semiconductor  
The first terminals of a plurality of resistor elements are connected to the intermediate connection points of a plurality of FETs connected in series, and a voltage, having a phase opposite to...
7197284 Antenna switches including field effect transistors  
The present invention provides a transceiver circuit that includes a transmission amplifier coupled with an antenna input/output node. The transmission amplifier is configured to amplify...
7193487 Multilayer board switch matrix  
A multi-layer cross connect having high isolation between signal channels, the multi-layer cross connect comprising: (a) a multi-layer circuit board having a top and bottom orientation and...
7183875 High frequency switching component with electrostatic surge elimination  
A high frequency switching component for being connected to a transmission circuit, a reception circuit, and an antenna to be used for switching to either a state in which the transmission circuit...
7173471 High frequency switching circuit and semiconductor device  
Four switching circuit sections consisting of four FETs connected in series are provided between a plurality of input/output terminals which output and input a high frequency signal. Gate control...
7171234 High-frequency switch circuit  
A high-frequency switch circuit is provided for switching a connection between a common transmission circuit and antenna side circuit in a plurality of transmitting and receiving systems. The...
7146137 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...
7130655 High-frequency switch circuit  
A high-frequency switch circuit is provided for switching a connection between a common transmission circuit and an antenna side circuit in a plurality of transmitting and receiving systems. The...
7129805 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.
7123884 RF switch  
A radio frequency (RF) switch which is used in an RF unit of a communication apparatus and which has less of an insertion loss during a transmission. A strip line disposed in the RF switch is...
7123114 Switchable combiner and integrated combining apparatus for using it  
A switchable combiner and apparatus for providing intergrated combiner unit, which can reduce problem due to frequent substitution of unit. The apparatus for providing intergrated combiner unit...
7106146 High frequency switch  
A signal line, which branches into four more from a connecting line on the input side via a branch point and has the branch signal lines including λ/4 transmission lines at their parts, and FETs...
7098755 High power, high linearity and low insertion loss single pole double throw transmitter/receiver switch  
A high performance single-pole-double-throw (SPDT) Transmitter/Receiver (T/R) FET switch utilizes a plurality of multi-gate FETs in series to realize low insertion loss, low harmonic distortion and...
7054795 Method for selecting optimized lengths of a segmented transmission line and a transmission line resulting therefrom  
A method for optimizing the segment lengths of a segmented transmission line, comprising the steps of modeling the electrical performance of the segmented transmission line, and evaluating the...
7012478 Method and device to control the power of millimeter waves for a V-band TR module  
The invention relates to a method to control the power of millimeter waves for a V-band TR module. According to said method, the output power is detected and controlled at a constant level with an...
7005942 Non-switching adaptable 4-way power splitter/combiner  
A 4-way power splitter/combiner circuit providing a plurality of transmission lines of selected impedance and phase shift to define four amplifier ports into which one to four amplifiers may be...
7005940 Multiband R. F. switching device  
A multiband transformation stage ( 14 ) comprising a common first signal port ( 20 ), a common second signal port ( 26 ) and a signal path ( 50 ) coupled between the first signal port ( 20 ) and...
6998935 Switch matrix  
A switch matrix including a plurality of microstrip pairs arranged to form a grid and switches to couple the microstrip pairs where they cross. Each microstrip pair includes a first microstrip and...
6998933 Millimeter wave switch  
A switch selectively provides one of a first input signal at a first frequency and a second input signal at a second frequency to an output terminal with low insertion loss and high isolation...
6987984 High-frequency switch module  
A high-frequency switch module comprising one band-separating circuit and two switch circuits, the first switch circuit being connected to one circuit separated by the band-separating circuit, and...
6973330 Optimized two-sided wireless modem card component placement  
According to one embodiment of the invention, a compact wireless modem card placement in compliance with thickness requirement of type II PCMCIA standard and type II Compact Flash form factor...
6972637 Transmit/receive combiner using shunt admittance elements for isolation  
Briefly, in accordance with one embodiment of the invention, a combiner may include transmission lines to couple a receive port and a transmit port to an antenna at a common junction. Shunt...
6927647 Two channels, high speed, RF switch  
A dual channel, RF switch with broadband frequency response is provided wherein an RF signal input to a transformer is provided to a first and second biasing circuit. Each biasing circuit includes...
6917258 High frequency switch  
A high frequency switch configured particularly with FET switches. One end of second FET switch is connected between I/O port and reception port and the other end is ground. A parallel unit of...
6909885 RF modulator and switch having high antenna isolation  
An RF modulator/switch selectably couples a locally generated and conducted RF signal or an antenna RF signal to a broadcast radio receiver. A local RF input receives the conducted RF signal. An...
6903623 High isolation switch in balanced lines  
A balanced line switching apparatus that provides high isolation at an expense of a marginal increase of loss. Practical implementation can give as much as 40 dB isolation in a single stage.
6897738 High-frequency switch  
A high-frequency switch includes a transmission terminal, an antenna terminal, a reception terminal, and a voltage-control terminal; a first diode, the cathode thereof being electrically connected...
6882014 Protection circuit for MOS components  
A protection circuit for MOS components. In the protection circuit, a bypass PMOS transistor has a gate, a source and a substrate, all coupled to a first voltage node and a drain coupled to a gate...
6844793 Signal combiner, a signal splitter and a circuit using a combiner and a splitter  
A circuit is provided where impedance converters ( 41-48 ) are provided such that active components (P 1 to P 8 ) can be switched off without power from the other active components leaking away...
6822531 Switched-frequency power dividers/combiners  
Switchable path length coupler/dividers. Coupler/divider operation over multiple frequency bands is provided by using switchable path lengths. In one implementation, a Wilkinson-style device with...
6819201 Balanced high isolation fast state transitioning switch apparatus  
A high speed switching apparatus comprises first and second parallel balanced lines each directed from an input line end to an output line end and adapted to receive equal and opposite currents to...
6801108 Millimeter-wave passive FET switch using impedance transformation networks  
The present invention provides a millimeter-wave passive FET switch by using impedance transformation network to transfer the effective capacitance seen from the drain to source of an FET at...
6798314 Transmit/receive combiner using shunt admittance elements for isolation  
Briefly, in accordance with one embodiment of the invention, a combiner may include transmission lines to couple a receive port and a transmit port to an antenna at a common junction. Shunt...
6768898 Composite high frequency component and mobile communication apparatus including the same  
A composite high frequency component which can be used in three different communication systems and a mobile communication apparatus which includes the same are provided. The composite high...
6765454 Semiconductor device  
A semiconductor device includes a switching element, for example, a Schottky barrier diode, which controls transmission/cutoff of a signal transmitted between two portions of a transmission line....
6734761 Radio-frequency input stage  
A radio-frequency input stage is specified and has a radio-frequency coupling element which couples an air interface to the inputs of parallel-connected radio-frequency resonant circuits. In order...
6731184 High frequency switching component  
A high frequency switching component for being connected to a transmission circuit, a reception circuit, and an antenna to be used for switching to either a state in which the transmission circuit...
Matches 1 - 50 out of 227 1 2 3 4 5 >