| Patent application number | Description | Published |
|---|
| 20080261544 | Techniques for improved adaptive impedance matching - An embodiment of the present invention provides an apparatus, comprising an RF matching network connected to at least one RF input port and at least one RF output port and including one or more voltage or current controlled variable reactive elements; and wherein the RF matching network is tuned to optimize the RF matching network and wherein said tuning is limited by a predetermined number of tuning steps that are taken within a transmit burst and/or limited by the magnitude of each step taken within a transmit burst and/or limited to the steps only being allowed between bursts. | 10-23-2008 |
| 20080268803 | Techniques for antenna retuning utilizing receive power information - An embodiment of the present invention provides a method, comprising using a received signal strength indicator (RSSI) to acquire information about received power in a receiver and using the received power information to tune an antenna tuner connected to the receiver. | 10-30-2008 |
| 20080274706 | Techniques for antenna retuning utilizing transmit power information - An embodiment of the present invention provides a radio frequency (RF) transceiver, comprising a transmitter, a receiver, an antenna connected to the transmitter and the receiver via a tuner, a power detector adapted to acquire information about transmit power, and wherein the tuner tunes the antenna based upon the transmit information to optimize the antenna in both the receive and transmit bands. | 11-06-2008 |
| 20080278237 | Techniques to reduce the power consumption of an RF log-amp detector - An embodiment of the present invention provides an RF log-amp detector, comprising a pre-amplifer at the input of the RF log-amp detector, a plurality of limiters with variable gain connected to the pre-amplifier, wherein the gain of the preamplifier is set to its minimum and the dynamic range is expanded by modifying the amplification gain of the plurality of limiters, thereby increasing the dynamic range and reducing accuracy, after which a coarse measurement of a power level is taken and wherein the RF log-amp detector then defines which pre-amplification level is required based on the course measurement to bring the signal at the output of the preamp within an optimum dynamic range of the log-amp and wherein the pre-amplification gain is then set while the gain of the plurality of limiters are set to their minimum value with the RF log-amp then performing a second measurement with higher accuracy and calculating the final measurement from fine measurements and the pre-amplification gain. | 11-13-2008 |
| 20080280570 | Hybrid techniques for antenna retuning utilizing transmit and receive power information - An embodiment of the present invention provides an apparatus, comprising a transceiver, an antenna tuner connecting said transceiver to an antenna, a power sensor adapted to acquire measurements about transmit power, a receive signal strength indicator (RSSI) adapted to acquire measurements about receive power and wherein said tuner tunes said antenna based upon said transmit and receive measurements to optimize said antenna in both the receive and transmit bands. | 11-13-2008 |
| 20090036089 | System, apparatus and method for frequency based current reduction in wireless portable devices - An embodiment of the present invention provides a method, comprising reducing power consumption in a wireless device by adapting the bias current of active devices in the apparatus to the RF carrier frequency of the wireless device. | 02-05-2009 |
| 20110014886 | TECHNIQUES FOR IMPROVED ADAPTIVE IMPEDANCE MATCHING - An embodiment of the present invention provides a method for limiting tuning of a matching network having variable reactive elements coupled to a variable load impedance to at least reduce an undesirable effect caused by an RF signal. Other embodiments are disclosed. | 01-20-2011 |
