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| Number | Title | Issue Date |
| 8185062 | Configurable antenna assembly A configurable antenna assembly includes an antenna structure and a configurable antenna interface. The antenna structure is operable, in a first mode, to provide a first antenna structure and a second antenna structure, wherein the first antenna structure receives ... | 05/22/2012 |
| 8027646 | Communication system and method for filtering and attenuating a signal between an antenna system and a base station A communication system is supplied for filtering and attenuating a receive signal in between a bi-directional antenna system and a bi-directional base station system. In the communication system, a first circulator is configured to receive a receive signal from a fi... | 09/27/2011 |
| 8014732 | Programmable antenna assembly and applications thereof A programmable antenna assembly includes a configurable antenna structure, a configurable antenna interface, and a control module. The configurable antenna structure includes a plurality of antenna elements that, in response to an antenna configuration signal, are c... | 09/06/2011 |
| 7983626 | Antenna impedance matching device and method for a portable radio telephone A device for matching an antenna impedance in a portable radio telephone having transmission and receiving circuits, a foldable casing enclosing the radio, the foldable casing movable between an unfolded position and a folded position, an antenna movable between an ... | 07/19/2011 |
| 7933562 | RF transceiver with adjustable antenna assembly A radio frequency (RF) transceiver includes a baseband processing module, a configurable receiver section, a configurable transmitter section and a configurable antenna assembly. The baseband processing module converts outbound data into an outbound symbol stream, c... | 04/26/2011 |
| 7917096 | Antenna interface circuits including multiple impedance matching networks that are respectively associated with multiple frequency bands and electronic devices incorporating the same An electronic device includes an antenna, a radio frequency circuit, and an impedance matching circuit that is connected between the antenna and the radio frequency circuit. The impedance matching circuit includes a plurality of impedance matching networks that are ... | 03/29/2011 |
| 7848712 | CMOS RF switch for high-performance radio systems A wireless device includes high-performance CMOS RF switches that include serially connected transistors coupled between an input terminal and an output terminal, with an inductor coupled from the input to the output that resonates out the capacitance of the transis... | 12/07/2010 |
| 7840191 | Baluns for multiple band operation A small size, low cost balun is formed on a substrate, such as gallium arsenide, as an integrated passive device. Multiple baluns are formed on a same substrate, allowing multi-band operation. For example, symmetrical transformers are provided for two different band... | 11/23/2010 |
| 7761061 | Programmable antenna assembly and applications thereof A programmable antenna assembly includes a configurable antenna structure, a configurable antenna interface, and a control module. The configurable antenna structure includes a plurality of antenna elements that, in response to an antenna configuration signal, are c... | 07/20/2010 |
| 7650120 | High frequency module A high frequency module comprises: a switch circuit connected to two antenna terminals; a diplexer connected to two reception signal terminals and the switch circuit; and a diplexer connected to two transmission signal terminals and the switch circuit. Each of the d... | 01/19/2010 |
| 7457591 | Transceiver assembly A transceiver assembly including an antenna input/output transition, a transmit module, a receive module, and a diplexer. The diplexer has opposing planar surfaces and the transmit module, receive module and antenna input/output transition are placed on the same pla... | 11/25/2008 |
| 7412210 | High frequency module A high frequency module comprises: a switch circuit connected to first and second antenna terminals; a first diplexer connected to first and second reception signal terminals and the switch circuit; a second diplexer connected to first and second transmission signal... | 08/12/2008 |
| 7398103 | High-frequency module and mobile communication apparatus using the same A high-frequency module includes a diplexer, first and second high-frequency switches, a SAW duplexer, first and second LC filters functioning as first and second filters, and an SAW filter functioning as a third filter, the module defines a unit that integrates fro... | 07/08/2008 |
| 7373114 | Signal transmission circuit, signal output circuit and termination method of signal transmission circuit This invention provides a signal transmission circuit, a signal output circuit, and a termination method of a signal transmission circuit capable of preventing the re-reflection of the signal at a transmitting node of a transmission path even when an impedance of a ... | 05/13/2008 |
| 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 |
| 7366466 | Wireless communication device interconnectivity A wireless communication device that is attached or included in an electronic object, such as a portable computer, having its own separate communication system. The separate communication system has an antenna for receiving and transmitting wireless communications, ... | 04/29/2008 |
| 7359681 | Transmitting apparatus and method of mobile communication terminal A mobile communication terminal transmitter comprises a detecting unit for detecting at least one of a first power level and a first power of reflection; a baseband signal processing unit for outputting at least one of a bias voltage and a power control signal, wher... | 04/15/2008 |
| 7353020 | Radio access point testing apparatus and method of testing radio access point A reception sensitivity is measured at a high precision. An access terminal function portion includes the transmitter part and receiver part of a communication terminal in a radio communication system. A path switch part effects switching so as to connect the input ... | 04/01/2008 |
| 7349465 | Line interface system A transceiver system is disclosed for use in a telecommunication system. The transceiver system includes a transmission circuit with a differential transmitter input coupled via a transmitter input stage to a differential input of a transmission amplifier in an embo... | 03/25/2008 |
| 7349674 | Apparatus and method for separating transmit and receive signals for time division duplexing radio system A receiver is protected by reducing a transmit leakage signal leaked when a transmit signal is radiated through the antenna by using three circulators (transmitter, antenna, and receiver). The transmitter and antenna circulators output the transmit leakage signal to... | 03/25/2008 |
| 7349673 | Adaptive radio transceiver with an antenna matching circuit An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged ... | 03/25/2008 |
| 7343015 | Method and apparatus for high fidelity wireless stereophonic transmission utilizing dual frequency carriers A method and system is disclosed for transmitting two related channels of signals through the air. A first channel of signals is modulated with a first carrier frequency, and a second channel of signals is modulated with a second carrier frequency. The modulated fir... | 03/11/2008 |
| 7330703 | Transceiver for bidirectional frequency division multiplexed transmission The present invention relates to a transceiver for bidirectional frequency division multiplexed transmission, a communication system including one or more transceivers. Optionally, the communication system is a communication system for a digital subscriber line. The... | 02/12/2008 |
| 7314997 | High speed data communication link using triaxial cable A high speed data communication link has a circuit for providing a differential signal having first and second opposite phase components and a triaxial cable connected to receive the positive phase component of the signal on the inner conductor and the negative phas... | 01/01/2008 |
| 7290718 | Radio terminal A radio terminal includes a first case which includes an operation unit and a first antenna, and a second case which includes a display unit and a second antenna and which is foldably connected to the first case via a hinge. The radio terminal performs short-range r... | 11/06/2007 |
| 7286228 | Method and apparatus for measuring circularly polarized rotating electromagnetic wave using magnetic field A method and apparatus for measuring a circularly polarized rotating electromagnetic wave using a magnetic field are provided. The method and apparatus are used to measure properties of a circularly polarized rotating electromagnetic wave occurring in nature by usin... | 10/23/2007 |
| 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 |
| 7283793 | Package filter and combiner network A transceiver front end circuit includes an antenna terminal capable of being coupled to an antenna. A first balun circuit has a single input that is coupled to the antenna terminal, and a pair of balanced outputs coupled to a corresponding pair of balanced receiver... | 10/16/2007 |
| 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 |
| 7277677 | Control device for antenna matching circuit A control device for an antenna matching circuit is configured to output an adjusting signal for changing impedance of an element in the antenna matching circuit based on change over time in signal power ratio of a reflected signal from the antenna matching circuit ... | 10/02/2007 |
| 7269391 | Tunable transceiver front end A transceiver front end includes a transmit/receive (T/R) switch, a first balun, a second balun, a low noise amplifier, a power amplifier, and compensation circuitry. The T/R switch is operably coupled to an antenna for receiving inbound radio frequency (RF) signals... | 09/11/2007 |
| 7260211 | Method and circuit for adapting the impedance of an analog telecommunication connection The invention relates to a method and a circuit for adapting the impedance in a telecommunication connection comprising a speech path and a data path having modems. Conductive properties measured by the modems are used to precisely adjust the impedance on the speech... | 08/21/2007 |
| 7257125 | Quality of service half-duplex media access controller A computer program product, apparatus, and method for communicating on a half-duplex channel includes transmitting a first frame; terminating transmission of the first frame when a collision is detected during the transmission; and transmitting a second frame before... | 08/14/2007 |
| 7245887 | High speed CMOS transmit-receive antenna switch A high-speed CMOS transmit/receive antenna switch includes a first transistor, a second transistor and a parasitic compensation network. The first transistor is operably coupled to an antenna, to a transmit path, and to receive a transmit/receive (T/R) control signa... | 07/17/2007 |
| 7239889 | Antenna system for GSM/WLAN radio operation An antenna system with two antennas provides the possibility to operate at least two different radio communication systems with one radio communication system operating on one single antenna of the antenna system and another radio communication system operating on b... | 07/03/2007 |
| 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 |
| 7239289 | Device and method for antenna matching in portable wireless terminal with built-in antenna Disclosed is an antenna matching device of a folder type portable wireless terminal with a built-in antenna. In the antenna matching device, a π-type matching circuit is connected between an built-in antenna and a duplexer, one end of a passive element is shunted b... | 07/03/2007 |
| 7212627 | Line interface with analog echo cancellation A line interface performs echo cancellation without the use of a hybrid filter network and includes a transmit path having a line driver, a single matching network terminating the line, and a single transformer. The transformer uses split windings on both the primar... | 05/01/2007 |
| 7206553 | Method and apparatus for impedance matching in an amplifier using lumped and distributed inductance An impedance matching circuit (140) includes a capacitive element (C1, 220), having a capacitance C, coupled in parallel with an output node (215) of the matching circuit, and an inductor (L1, 225) coupled in series ... | 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 |
