RF CLOCK GENERATOR WITH SPURIOUS TONE CANCELLATION

摘要

A clock generator circuit may generate a target clock signal and may include a pattern generator to generate a pre-distorted version of a modulation signal from patterns stored by the pattern generator. An up-converter may up-convert the pre-distorted version of the modulation signal and a radio frequency lock oscillator signal to obtain an RF clock signal having a desired frequency tone. A tone detection circuit may receive the RF clock signal and detect a presence of unwanted tones. A controller may write the patterns corresponding to the pre-distorted version of the modulation signal to the pattern generator based on the detected unwanted tones in the RF clock signal.