Patent ID: 9571137
Date: 2017-02-14
CPC Classifications: H03F,H04B,H04L,H05B

Claim:
1. A single tone RF signal generator comprising: an output; a power amplifier having an input, wherein the power amplifier is configured to receive at said input an RF signal including a first harmonic corresponding to a single tone RF signal to be produced by the single tone RF signal generator, amplify the RF signal, and provide the amplified RF signal to the output of the single tone RF signal generator; and a feedback circuit connected between the output of the single tone RF signal generator and the input of the power amplifier, wherein the feedback circuit is configured to add predistortion harmonics to the RF signal received by the power amplifier to cancel harmonics in the amplified RF signal provided by the power amplifier, wherein the predistortion harmonics have frequencies that are overtones of a fundamental frequency of the single tone RF signal.