Abstract: A mismatch detector including a directional device adapted to couple signals across the device and a detector coupled to a port on the directional device and configured to measure a reflected power a second detector coupled to a port on the directional device and configured to measure a transmit power. The mismatch detector may be used in wireless communication devices, including, but not limited to mobile wireless devices, base stations, and communication systems.

Abstract: A wireless communication device comprises a transmitter configured to transmit wireless communication signals and a receiver. The receiver comprises a GPS receiver configured to receive GPS signals and a wireless communications receiver configured to receiver wireless communications signals. The wireless communication device also comprise a processor coupled with the receiver and the transmitter, the processor configured to process the GPS signals received by the GPS receiver and the wireless communications signals received by the wireless communication receiver, and to generate the wireless communication signals transmitted by the transmitter.

Abstract: A power amplifier matching circuit is provided. The matching circuit includes a ferro-electric tunable component. A control signal is applied to the tunable component, changing the component's impedance. This changes the impedance of the matching circuit.

Abstract: A crystal oscillator having tunable ferroelectric components. A first ferroelectric capacitor is coupled to an automatic frequency control line for fine tuning the reference frequency. A second ferroelectric capacitor is coupled to temperature compensation control circuitry that applies a correction voltage to the second capacitor to vary the reference frequency in response to ambient temperature changes. A third ferroelectric capacitor has a capacitance that is adjusted and fixed during manufacture to set the initial tolerance of the crystal oscillator at ambient temperature.

Abstract: A wireless communication device comprises a plurality of receive signal paths, each of the receive signal paths is configured to receive signals in a certain frequency bandwidth. The communication device also comprises an amplifier coupled with each of the plurality of receive signal paths. The amplifier is configured to amplify the receive signals associated with each of the plurality of receive signal paths.

Abstract: A wireless communication device comprises a plurality of receive signal paths, each of the receive signal paths is configured to receive signals in a certain frequency bandwidth. The communication device also comprises an amplifier coupled with each of the plurality of receive signal paths. The amplifier is configured to amplify the receive signals associated with each of the plurality of receive signal paths.

Abstract: A wireless communication device comprises a plurality of receive signal paths, each of the receive signal paths is configured to receive signals in a certain frequency bandwidth. The communication device also comprises an amplifier coupled with each of the plurality of receive signal paths. The amplifier is configured to amplify the receive signals associated with each of the plurality of receive signal paths.

Abstract: A wireless communication system includes a location assist system that is configured to interface with a network, such as the Internet, or a server, such as an HTTP server, to obtain GPS information. The GPS information can then be used to provide wireless devices within the wireless communication system with GPS assistance information that allows the wireless devices to quickly and efficiently acquire GPS satellites signals.

Abstract: A system and method for wireless communications includes a wireless communications device. The wireless communications device includes a microstrip, line or trace that has been structured to electrically connect to electrical circuitry and electrical components of the wireless communications device and has been adapted to transmit and to receive wirelessly a short-range wireless communications signal. The microstrip, line or trace is formed from branches of conducting material. One or more of the branches may include a specific absorption rate element, such as a specific absorption rate bracket.

Abstract: A power amplifier matching circuit is provided. The matching circuit includes a ferro-electric tunable component. A control signal is applied to the tunable component, changing the component's impedance. This changes the impedance of the matching circuit.

Abstract: A voltage controlled oscillator incorporating a ferroelectric capacitor in its resonant circuit is provided in order to provide superior phase noise performance and a linear control voltage/capacitance relationship. The resonant circuit may include multiple ferroelectric capacitors and multiple control voltages in order to provide band switching capability and/or increase the tuning range of the oscillator. The feedback loop of the oscillator may also incorporate a ferroelectric capacitor in order to adaptively optimize the feedback.

Abstract: A voltage controlled oscillator incorporating a ferroelectric capacitor in its resonant circuit is provided in order to provide superior phase noise performance and a linear control voltage/capacitance relationship. The resonant circuit may include multiple ferroelectric capacitors and multiple control voltages in order to provide band switching capability and/or increase the tuning range of the oscillator. The feedback loop of the oscillator may also incorporate a ferroelectric capacitor in order to adaptively optimize the feedback.

Abstract: A wireless communication device comprises a power amplifier configured to amplify a power level of a transmit signal to a required transmit power level and a transmission line coupled with the power amplifier. The transmission line is configured to convey the amplified transmit signal. The wireless communication device also comprises a power control circuit that includes a bi-directional coupler detector coupled with the transmission line. The bi-directional coupler detector is configured to sense a forward power level and a reflected power level in the transmission line. The power control circuit may be configured to adjust the required transmit power level based at least in part on the forward and reflected power levels sensed by the bi-directional coupler detector. The power control circuit may also adjust an impedance of an impedance matching circuit based at least in part on the reflected power level sensed by the bi-directional coupler detector.

Abstract: A system and a method for providing a global positioning system (GPS) enabled antenna system are provided. The GPS enabled antenna may be used, for example, on a wireless communications device such as a wireless handset. The wireless communications device may include a switching module that can selectively switch communications signals between the antenna and one of a plurality of communications band circuits. A respective impedance matching circuit may be provided between the switching module and particular communications band circuitry to match or to tune the antenna to the particular communications band circuitry.

Abstract: A method and apparatus is disclosed for improving performance of a communication receiver. In one embodiment a method and apparatus is configured to process a communication signal by adjusting the amplification level of the signal and monitoring for a corresponding change in the error rate which indicates the increased error rate is caused by an interference or jammer signal. A method and apparatus is disclosed which reduces the error rate if the error rate can be reduced by activating error reducing operations. In one embodiment current flow to a mixer is increased to reduce the error rate. The apparatus may be further configured to periodically monitor the error rate during periods when error reducing operations are active. If the monitoring determines the error rate has sufficiently decreased then the receiver operation is restored to normal operation. Phase offset adjustment may also occur to further reduce the error rate.

Abstract: A wireless communication device comprises a transmitter configured to transmit wireless communication signals and a receiver. The receiver comprises a GPS receiver configured to receive GPS signals and a wireless communications receiver configured to receive wireless communications signals. The wireless communication device also comprises a processor coupled with the receiver and the transmitter, the processor configured to process the GPS signals received by the GPS receiver and the wireless communications signals received by the wireless communication receiver, and to generate the wireless communication signals transmitted by the transmitter.

Abstract: A base station comprise a GPS receiver configured to periodically locate and receive information from GPS satellites, and a transmitter configured to periodically transmit the received GPS satellite information to at least one of a plurality of GPS enabled devices. The GPS enabled device receives the information, stores it, and then uses the stored information to automatically acquire GPS satellites when it receives a position request.

Abstract: A wireless communication device comprises a power amplifier configured to amplify a power level of a transmit signal to a required transmit power level and a transmission line coupled with the power amplifier. The transmission line is configured to convey the amplified transmit signal. The wireless communication device also comprises a power control circuit that includes a bi-directional coupler detector coupled with the transmission line. The bi-directional coupler detector is configured to sense a forward power level and a reflected power level in the transmission line. The power control circuit may be configured to adjust the required transmit power level based at least in part on the forward and reflected power levels sensed by the bi-directional coupler detector. The power control circuit may also adjust an impedance of an impedance matching circuit based at least in part on the reflected power level sensed by the bi-directional coupler detector.

Abstract: A system and method for wireless communications includes a wireless communications device. The wireless communications device includes a microstrip, line or trace that has been structured to electrically connect to electrical circuitry and electrical components of the wireless communications device and has been adapted to transmit and to receive wirelessly a short-range wireless communications signal. The microstrip, line or trace is formed from branches of conducting material. One or more of the branches may include a specific absorption rate element, such as a specific absorption rate bracket.

Abstract: GPS functionality is added to a wireless communication device in an efficient and cost effective manner. Briefly, the present invention has a common mixer constructed to be used for a GPS signal and another signal or a common IF filter constructed to be used for a GPS signal and another signal. In one embodiment, a common mixer and IF filter are used for both PCS and GPS signals. In another embodiment, a band select switch may be used to select either the PCS signal or the GPS signal. Alternatively, a duplexer or diplexer may couple the GPS signal and the PCS signal to the common mixer. In this way, a common mixer is enabled to be used for both GPS and PCS. A dual band local oscillator may be configured to output a local oscillator signal facilitating selection of a GPS IF signal, a PCS IF signal or a cellular CDMA IF signal, using a common IF filter.