| Patent application number | Description | Published |
|---|
| 20090256644 | RADIO FREQUENCY COMMUNICATION DEVICES AND METHODS - One embodiment relates to a radio frequency (RF) communication device. The RF communication device includes an antenna interface coupled to an antenna that exhibits a time-varying impedance. The RF communication device also includes a test interface coupled to RF test equipment that exhibits a test impedance. A tuning circuit in the RF communications device selectively provides a matched impedance to either the time-varying impedance or the test impedance based on feedback derived from the test interface. Other methods and systems are also disclosed. | 10-15-2009 |
| 20090322421 | POWER EFFICIENT TRANSMITTER WITH HIGH DYNAMIC RANGE - One embodiment of the present invention relates to a method for transistor matching. The power transmitter comprises a first, second, and third amplification path. The paths are selectively activated and deactivated to output a received signal with high efficiency and linearity. The first amplification path is configured to receive a first signal and output a first amplified signal to a first port of a output power combiner when activated and provide an impedance that results in a high reflection factor when deactivated. The second amplification path is configured to receive a second signal with 90° phase shift with respect to the first signal and output a second amplified signal to a second port of the combiner when activated and provide an impedance that results in a high reflection factor when deactivated. The third amplification path is configured to receive a third signal and output a third amplified signal to a third port of the output power combiner when activated and provide an impedance that results in an impedance that matches the output impedance when deactivated. | 12-31-2009 |
| 20100033014 | VOLTAGE SUPPLY ARRANGEMENT AND METHOD FOR PRODUCTION OF ELECTRICAL POWER - A voltage supply arrangement is proposed, which provides a voltage from a first power range in a first operating mode and from a second power range in a second operating mode, to a first electrical load. The voltage supply arrangement includes a voltage converter which is coupled on the input side to a voltage input of the voltage supply arrangement and on the output side to a first connection of a first switch, which is connected at a second connection to a voltage output of the voltage supply arrangement for connection of a first electrical load. The voltage supply arrangement further includes a second switch, which is coupled at a first connection to the voltage input and at a second connection to the voltage output, and a drive circuit, which is configured to set the first and the second switch to the first or the second operating mode in response to a control signal. | 02-11-2010 |
| 20100302106 | Impedance Tuning of Transmitting and Receiving Antennas - The present disclosure relates to impedance tuning of transmitting and receiving antennas. | 12-02-2010 |
| 20100302123 | Wireless Communication Device Antenna With Tuning Elements - The present disclosure relates to wireless communication device antennas with tuning elements. | 12-02-2010 |
| 20100304688 | Minimizing Mutual Couping - Disclosed herein are techniques, systems, and methods relating to minimizing mutual coupling between a first antenna and a second antenna. | 12-02-2010 |
| 20110018625 | ELECTRONIC CIRCUIT AND ELECTRONIC CIRCUIT ARRANGEMENT - In accordance with one exemplary embodiment, an electronic circuit is provided, wherein the electronic circuit comprises a first transistor and also a second transistor coupled in series with the first transistor. Furthermore, the electronic circuit comprises a capacitor, wherein a first terminal of the capacitor is coupled to a control terminal of the second transistor, and wherein a second terminal of the capacitor is coupled to an electrical potential which is dependent on a radio-frequency input signal of the electronic circuit. | 01-27-2011 |
| 20110025414 | PREDISTORTION OF AMPLIFIER INPUT SIGNALS - Described herein are devices, methods, and techniques related to predistortion of amplifier signals based on an operating condition. Predistortion techniques are described that mitigate or eliminate the effects of variable operating conditions, including nonlinear effects, on amplified signals. Nonlinearities may be mitigated by compensating at a baseband signal prior to amplification, generally using scaling and a static characteristic that is valid for a broad range of operating conditions. | 02-03-2011 |
