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| Number | Title | Issue Date |
| 7893791 | Gallium nitride switch methodology Devices and systems for using a Gallium Nitride-based (GaN-based) transistor for selectively switching signals are provided. A first transmission line is configured to connect a common connection and a first connection. A first Gallium-Nitride-based (GaN-based) tran... | 02/22/2011 |
| 7864000 | High frequency switching circuit There is provided a high frequency switching circuit that can reduce generation of a harmonic signal without using a boost circuit. A high frequency switching circuit according to an aspect of the invention may include: a first switch having one end connected to a f... | 01/04/2011 |
| 7659794 | Single-pole-double-throw switch integrated with band pass filtering function A single-pole-double-throw switch is provided, which is configured to be integrated with a bandpass filtering function and includes four quarter-wavelength transmission lines connected in series, five resonators connected in parallel to each other, and four transist... | 02/09/2010 |
| 7649430 | 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 a... | 01/19/2010 |
| 7646260 | Switching device with selectable phase shifting modes for reduced intermodulation distortion According to one exemplary embodiment, a switching device with phase selection terminals to select between at least two phase shifting modes to reduce intermodulation distortion in the switching device includes a first phase selection terminal to select a first phas... | 01/12/2010 |
| 7642881 | Vanadium oxide RF/microwave integrated switch suitable for use with phased array radar antenna A circuit including: at least one radio frequency microstrip conductor; and, a least one vanadium oxide region electrically coupled to the at least one radio frequency microstrip conductor; wherein, the at least one vanadium oxide region is substantially conductive ... | 01/05/2010 |
| 7557674 | Matrix switch Four SP4T switches (31-34) are grouped in twos to form two switch pairs. First conductive lines (411-414, 421-424) are arranged in fours between the SP4T swit... | 07/07/2009 |
| 7532087 | Switch circuit The switch circuit 1 includes a common terminal 10 (common port), a plurality of branch terminals 22, 24, a common path P0 connecting the common terminal 10 and a diverging point N, branch paths P1, P2 connecting the ... | 05/12/2009 |
| 7511592 | Switch circuit and integrated circuit A switch circuit includes a balanced line connected between one end of an unbalanced line having another end connected to an input terminal and an output terminal and a balanced line connected between the one end of the unbalanced line and an output terminal. On eac... | 03/31/2009 |
| 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 signal and selectively routing the input signal onto a first signal path... | 09/09/2008 |
| 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 receiving path a second on-chip switching means at an input to an on-ch... | 08/26/2008 |
| 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 connection path via a branch point; an FET, which is shunt-connected betwee... | 08/12/2008 |
| 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 to the transmission terminal, and the anode being electrically connec... | 06/24/2008 |
| 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 signals and reception signals of the N-CDMA from each other. The second... | 05/13/2008 |
| 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 signal sources by transmission of control signals. Each signal source is c... | 05/13/2008 |
| 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 carry a high power, high frequency signal between the input port and... | 05/06/2008 |
| 7359677 | Device and methods for high isolation and interference suppression switch-filter Systems and methods are provided for a stacked die configuration of a high isolation switch and a rejection filter where transmit and receive signals are desired to have a high out-of-band rejection and a low loss band-pass region. In some aspects of the invention t... | 04/15/2008 |
| 7342467 | Variable power coupling device An apparatus and method for providing adaptive control of the output of a radio frequency coupler. A plurality of input signals is provided to a multi-prong divider/combiner, the divider/combiner having a first and a second input terminals communicating a first and ... | 03/11/2008 |
| 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 the first state in which the variable device has a high resistance a... | 01/22/2008 |
| 7300816 | Method of sensor packaging The present invention is directed to a method of making flexible interconnect packaging, in particular, packaging for fingerprint sensor chips. The chip is mounted on a flexible substrate having conductive traces leading to a connector at an end of the substrate. Wi... | 11/27/2007 |
| 7292827 | System and method for providing a single-ended receive portion and a differential transmit portion in a wireless transceiver In an input/output circuit (200), a differential balun (250) is provided that has first and second balun inputs and first and second balun outputs. An antenna (230) is connected to the first and second balun outputs. A differential amplifier ( | 11/06/2007 |
| 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 that of the voltage applied to the gate terminals of the plurality of FE... | 10/23/2007 |
| 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 capacitor; at least one semiconductor device; at least one input terminal; at ... | 10/09/2007 |
| 7268606 | High-frequency signal switching An electronic signal processing apparatus has a signal switch with a first and a second transistor of normally-on type, having main current channels coupled between an internal node and a switch input and output, respectively. A diode provides a switchable signal co... | 09/11/2007 |
| 7265604 | High-frequency switch circuit arrangement A high-frequency switch circuit arrangement. A plurality of stages (for example, two stages) of capacitative elements connected in series (C11 and C12, C21 and C22) are used in a shunt path of a high-frequency component. If a surge voltag... | 09/04/2007 |
| 7253702 | High-frequency switch module A high-frequency switch module, including a laminate constituted of dielectric layers having electrode patterns, the high-frequency switch module also including a high-frequency switch circuit for switching a transmitting circuit and a receiving circuit of transmitt... | 08/07/2007 |
| 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 switch is closed is interposed between a first signal terminal and a secon... | 07/31/2007 |
| 7248129 | Microstrip directional coupler A microwave directional coupler includes a microstrip conductor formed on a dielectric substrate and forming a main transmission line having in and out ports that receive signals to be coupled. A substantially U-shaped microstrip conductor is formed over the dielect... | 07/24/2007 |
| 7239851 | High frequency module The present invention provides a high frequency module having a base substrate unit (2) which has its uppermost layer planarized to form a buildup-forming surface (16), a high frequency circuit unit (3) having multiple wiring layers which are fo... | 07/03/2007 |
| 7233775 | Transmit and receive antenna switch Antenna switches (1,10) in dual-band or multi-band mobile phones are according to a basic idea provided with a serial semiconductor switches (11,21,12,22) per transmitting branch (2,3) and with a further semiconductor switch (13,23) coupl... | 06/19/2007 |
| 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 provides fan-out of the network inputs to widely separated locations in the... | 06/12/2007 |
| 7227495 | Radar fill-level sensing device A radar fill-level sensing device has a high-frequency unit that serves to generate and process radar signals of a predefined frequency and wavelength, an antenna for transmitting and/or receiving the radar signals, as well as circuitry, provided on a circuit board.... | 06/05/2007 |
| 7221922 | Switch circuit and composite high frequency elements A switch circuit for switching the connection of the receiving or transmitting circuits of two communication systems to an antenna circuit, which comprises first and second switch means having two switching elements, the first switch means comprising a first inducta... | 05/22/2007 |
| 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 output ports, where i is less than m and j is less than n; and a plura... | 04/17/2007 |
| 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 that of the voltage applied to the gate terminals of the plurality of FE... | 04/03/2007 |
| 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 communications to be transmitted from the transceiver circuit. The transceiver ... | 03/27/2007 |
| 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 comprising at least a bottom layer and one or more upper layers; (b) a plural... | 03/20/2007 |
| 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 is connected to the antenna, or a state in which the reception circui... | 02/27/2007 |
| 7177619 | 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 gat... | 02/13/2007 |
| 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 voltages are individually applied to gate terminals of four FETs, resp... | 02/06/2007 |
