$Integer boundary spur considerations for fractional-N PLL based FMCW radar$

Integer boundary spur considerations for fractional-N PLL based FMCW radar

Fractional-N phase locked loops (PLLs) offer a low-cost solution to the precision frequency ramp requirements of frequency-modulated continuous-wave (FMCW) radar. In this application, however, the infamous spurious signals generated by these PLLs have not received adequate analysis. In this Letter,...

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Veröffentlicht in:	Electronics letters 2020-07, Vol.56 (14), p.729-732
Hauptverfasser:	Jordan, D.A, Inggs, M.R, Abdul Gaffar, M.Y
Format:	Artikel
Sprache:	eng
Schlagworte:	beat signal CW radar FM radar FMCW radar performance fractional‐N phase locked loops fractional‐N PLL frequency‐modulated continuous‐wave radar Fresnel ripples integer boundary spurs low‐cost solution phase locked loops PLL bandwidth precision frequency ramp requirements radar signal processing Radar, sonar and navigation spur chirps spurious signals spurious‐free dynamic range reduction waveform generation waveform generators
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