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Design of a Linear FMCW Radar Synthesizer with Focus on Phase Noise
Norwegian University of Science and Technology, Faculty of Information Technology, Mathematics and Electrical Engineering, Department of Electronics and Telecommunications.
2012 (English)MasteroppgaveStudent thesis
Abstract [en]

The linear FMCW radar has become more popular in recent years mainly due to advances in digital signal processing and the good performance of the radar at close ranges. What puts limits to the performance is mainly phase noise. Because trans- mission and reception happen simultaneously, the phase noise will limit the maxi- mum power that should be used and hence also the ability to detect weak targets. By ensuring during the design process that the phase noise is low, the radar’s perfor- mance will thus get better. This thesis describes the construction of a FMCW radar frequency synthesizer where the focus is mainly on phase noise. The functionality of the circuit is shown to be successful, but there is more phase noise than what is predicted. Several causes for this are discussed. Important background theory about radars, phase noise and phase-locked loops is presented and several simulations are performed in order to get a better understanding. The conclusion of the work is that it is not very hard to build a synthesizer, but in order to tweak the phase noise performance to be as good as the linear theory tells it to be, careful attention must be paid during all stages of the design.

Place, publisher, year, edition, pages
Institutt for elektronikk og telekommunikasjon , 2012. , 164 p.
Keyword [no]
ntnudaim:6889, MTEL elektronikk, Radioteknikk og kommunikasjon
URN: urn:nbn:no:ntnu:diva-16787Local ID: ntnudaim:6889OAI: diva2:536458
Available from: 2012-06-21 Created: 2012-06-21

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