Frequency-Modulated Continuous-Wave Chirp Frequency Error and Phase Noise Measurement: How to Characterize Frequency-Modulated Continuous-Wave Chirp Using Commercial Oscilloscope

Abstract

Integrated frequency-modulated continuous-wave (FMCW) radars are used in target range and velocity sensing applications [1]. In these systems, the output frequency is linearly modulated over time, typically referred to as an FMCW chirp. The key component in the integrated FMCW radar sensor is the FMCW chirp synthesizer. Most often the chirp synthesizer is implemented by using a frequency-modulated phase-locked loop (PLL).