Non-linearity effects in PLL based automotive radar systems

F.G. Jansen, F. Laghezza

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review


In LFMCW radar systems linearity of the frequency ramp is crucial to obtain a clean IF spectrum. PLL based frequency ramp generation is immune to temperature variations and thus provides a robust solution. However, being a closed loop system, the response of a PLL to a frequency ramp input will contain a transient. In this work it was found that this transient causes a single-sided l/f distortion in the IF spectrum. It was shown that the amount of distortion can be controlled by allowing some time for the PLL to settle and by changing the loop-bandwidth of the PLL.

Original languageEnglish
Title of host publication2018 19th International Radar Symposium, IRS 2018
EditorsHermann Rohling
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
Number of pages8
ISBN (Print)978-3-7369-9545-1
Publication statusPublished - 27 Aug 2018
Event19th International Radar Symposium, IRS 2018 - Bonn, Germany
Duration: 20 Jun 201822 Jun 2018


Conference19th International Radar Symposium, IRS 2018


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