Patent ID: 7990186

Claim:
A circuit for signal conditioning consisting of a first stage with a digital/analog converter, a second stage with an I/Q-modulator, the second stage being subsequent to the first stage, and at least one third stage with a mixer, the third stage being subsequent to the second stage, wherein, instead of a multiplicity of independent oscillators, a shared oscillator is provided for the first, second, and third stages, from an output signal of which a respective oscillator signal and clock-pulse signal for each stage of the first, second, and third stages is derived, wherein the oscillator signal and respective clock-pulse signal of the oscillator are supplied via a frequency divider to at least one stage of the first, second, and third stages, or wherein the oscillator signal of the oscillator is supplied via a frequency multiplier to at least one stage, and wherein the oscillator signal of the oscillator is supplied as a reference signal to a frequency synthesizer of at least one stage of the first, second, and third stages.