Measurement setup for the analysis of broadband frequency-modulated signals

Extreme linear broadband radio frequency chirp generation is of fundamental interest, e.g. for high-resolution radar systems. The chirp linearity is essential for the accuracy of radar measurements. A linearity analysis is presented in this paper. The developed measurement setup is discussed and measurement results are shown. The results are compared with commercially available measurement equipment. An analysis bandwidth of at least 5.4 GHz in the frequency range between 8 GHz and 13.5 GHz is demonstrated, whereby the concept and setup are not limited to this frequency range. Furthermore, outperforming time-resolution and state of the art low-noise behavior are demonstrated.