Power detection in radio frequency systems
AssigneeSkyworks Solutions, Inc.
InventorsFlorinel G. Balteanu, Ashish Vijay Pingale, Kiran Tej Thoomu, Yunyoung Choi
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Abstract
Apparatus and methods for power detection in radio frequency (RF) systems are disclosed. In certain embodiments, a power detection system includes a power amplifier, a directional coupler connected to an output of the power amplifier, and a power detector that generates a differential power detection signal based on a single-ended radio frequency input signal received from the directional coupler. The differential power detection signal indicates an output power of the power amplifier, for example, a root mean square (RMS) output power.
Claims17
A mobile device comprising:
- a transceiver configured to generate a radio frequency transmit signal;
- and
- a front end system including a power amplifier configured to amplify the radio frequency transmit signal to generate a radio frequency output signal, a directional coupler configured to generate a single-ended radio frequency signal based on sensing the radio frequency output signal, and a power detector configured to receive the single-ended radio frequency signal and to generate a differential power detection signal that indicates an output power of the power amplifier.
A power amplifier system comprising:
- a power amplifier configured to amplify a radio frequency transmit signal to generate a radio frequency output signal;
- a directional coupler configured to generate a single-ended radio frequency signal based on sensing the radio frequency output signal;
- and
- a power detector configured to receive the single-ended radio frequency signal and to generate a differential power detection signal that indicates an output power of the power amplifier.
A method of signal power detection in a mobile device, the method comprising:
- generating a radio frequency transmit signal using a transceiver;
- amplifying the radio frequency transmit signal to generate a radio frequency output signal using a power amplifier;
- generating a single-ended radio frequency signal based on sensing the radio frequency output signal using a directional coupler;
- and
- generating a differential power detection signal from the single-ended radio frequency signal using a power detector, the differential power detection signal indicating an output power of the power amplifier.
Dependencies are inferred from the claim text.