Title :
A high precision 24 GHz FMCW-radar based on a fractional-N ramp-PLL
Author_Institution :
Inst. fur Hochfrequenztech., Ruhr-Univ., Bochum, Germany
Abstract :
A 24 GHz FMCW-radar system is presented using a fractional-N phase locked loop ramp generator. This fractional-N ramp generator achieves relative ramp nonlinearities below 10/sup -8/. Among other applications, linear frequency ramps are important tools in high precision FMCW-radar systems. Highly linear frequency ramps make post-measurement error correction feasible. Other important aspects of the high performance FMCW-radar system are the design of the microwave circuit and the digital signal processing of the IF signals.
Keywords :
CW radar; FM radar; error correction; microwave circuits; phase locked loops; radar signal processing; ramp generators; 24 GHz; FMCW-radar; IF digital signal processing; fractional-N PLL ramp generator; fractional-N phase locked loop ramp generator; linear frequency ramps; microwave circuit design; post measurement error correction; relative ramp nonlinearities; 1f noise; Frequency conversion; Logic; Measurement errors; Microwave filters; Phase locked loops; Signal design; Signal to noise ratio; Transfer functions; Voltage-controlled oscillators;
Conference_Titel :
Precision Electromagnetic Measurements, 2002. Conference Digest 2002 Conference on
Conference_Location :
Ottawa, Ontario, Canada
Print_ISBN :
0-7803-7242-5
DOI :
10.1109/CPEM.2002.1034791
