| 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 |
| 20090298448 | STRATEGY FOR USING THE ENVELOPE INFORMATION WITHIN A CLOSED LOOP POWER CONTROL SYSTEM - A power control system includes a reference path filter used to suppress high frequencies in an input signal and generate a filtered envelope signal, a reference path amplifier to scale the filtered input signal based on a gain signal and generate a reference signal, a signal path amplifier to amplify an RF modulated signal and generate a signal path output signal scaled by a gain of an actuator signal, and a power detector to detect a power associated with the signal path output signal. The system includes an ADC to receive, pre-filter and convert the detected envelope signal into a measurement signal, and a comparator block to receive the reference signal and the measurement signal, and generate an error signal based on the difference, and a controller to generate the actuator signal for controlling the gain of the signal path amplifier based on the error signal. | 12-03-2009 |
| 20100022192 | Systems and Methods for Transmitter/Receiver Diversity - Systems and methods for transmitter/receiver diversity for wireless communication systems are described herein. | 01-28-2010 |
| 20100061279 | Transmitting and Receiving Wireless Signals Via Dual Antennas - Systems, methods, and devices to transmit and receive wireless signals are described. | 03-11-2010 |
| 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 |
