Title :
A highly linear frequency ramp generator based on a fractional divider phase-locked-loop
Author :
Musch, Thomas ; Rolfes, Ilona ; Schiek, Burkhard
Author_Institution :
Inst. fur Hochfrequenztech., Ruhr-Univ., Bochum, Germany
fDate :
4/1/1999 12:00:00 AM
Abstract :
A highly linear analog frequency ramp generator based on a fractional divider concept is presented. The frequency ramp linearity achievable in this fractional phase-locked-loop configuration is better than 10/sup -4/. This value is revealed by numerical simulations as well as by measurements performed. With a prototype synthesizer implemented in a FMCW-radar system suitable for distance and velocity measurements.
Keywords :
CW radar; FM radar; frequency dividers; frequency synthesizers; phase locked loops; FMCW radar; distance measurement; fractional divider phase locked loop; linear analog frequency ramp generator; numerical simulation; velocity measurement; Bandwidth; Circuits; Frequency conversion; Frequency synthesizers; Linearity; Phase locked loops; Radar; Tuning; Velocity measurement; Voltage-controlled oscillators;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
