Antenna Tuner in Combination with Modified Feedback Receiver for Improved Antenna Matching

A method, comprising:

• transmitting a radio frequency (RF) signal at an at least approximately constant power over a first frequency channel via an antenna;
• while the RF signal is transmitted, setting a directional coupler to provide a forward directed wave through a feedback receiver and measuring a phase and magnitude of the forward directed wave;
• while the RF signal is transmitted, setting the directional coupler to provide a reflected wave through the feedback receiver and measuring a phase and magnitude of the reflected wave;
• based on the measured phases and magnitudes for the forward directed and reflected waves, adjusting an admittance of an antenna tuner to set a matching condition between the antenna tuner and the RF antenna while the first frequency channel is employed.

A transmitter, comprising:

• a transmission path;
• an antenna tuner coupled downstream of the transmission path;
• a radio frequency (RF) antenna coupled downstream of the antenna tuner;
• and
• analysis circuitry coupled between the transmission path and the antenna tuner and having an output coupled to a feedback path coupled to the antenna tuner, wherein the analysis circuitry is configured to determine an impedance mismatch between the transmission path and the RF antenna due to a frequency-independent use case at a given time and is further configured to provide a feedback signal on the feedback path to reduce the impedance mismatch.