Patent ID: 6104250
Filing Date: 2000-08-15
Classification: G01S,H03B,H03L

Abstract:
A method for controlling a car radar oscillator of the FM/CW type for generating a linear frequency sweep by the use of a phase-locked loop, said method comprising the steps of:forming at least two phase-locked loops, a first phase-locked loop being formed as a linearization loop, and being utilized to generate a repeated linear frequency sweep, and a second phase-locked loop being formed as an oscillator loop, the oscillator loop utilizing each linear frequency sweep generated in the linearization loop as a reference signal for controlling the oscillator frequency to provide a repeated linear oscillator frequency sweep, wherein the oscillator frequency is in the GHz range, the linearization loop is limited to a bandwidth in the kHz range, and the oscillator loop is limited to a bandwidth in the MHz range.