Single tone RF signal generator

摘要

A single tone RF signal generator and a method of generating a single tone RF signal. The single tone RF signal generator includes an output and a power amplifier that has an input. The power amplifier is operable to receive an RF signal including a first harmonic corresponding to a single tone signal to be produced by the signal generator. The power amplifier is also operable to amplify the RF signal. The power amplifier is further operable to provide the amplified RF signal to the output of the signal generator. The single tone RF signal generator further includes a feedback circuit connected between the output of the signal generator and the input of the power amplifier. The feedback circuit is configured to add one or more predistortion harmonics to the RF signal received by the power amplifier for cancelling harmonics in the amplified RF signal provided by the power amplifier.

主权项

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.