Title :
Measuring the ramp linearity of extremely linear frequency ramps using a fractional dual loop structure
Author :
Musch, T. ; Schiek, B.
Author_Institution :
Inst. fur Hochfrequenztech., Ruhr-Univ., Bochum, Germany
Abstract :
A dual loop synthesizer concept based on fractional divider techniques for measuring highly linear analog frequency ramps is presented. Due to the excellent sensitivity of the measurement set-up relative nonlinearities as low as 10/sup -9/ are ascertainable. The measurements obtained with the prototype circuit are shown. They prove the expected high sensitivity.
Keywords :
CW radar; FM radar; distance measurement; frequency dividers; frequency synthesizers; linearisation techniques; measurement systems; phase locked loops; analog frequency ramps; extremely linear frequency ramps; fractional divider techniques; fractional dual loop structure; measurement set-up; ramp linearity; relative nonlinearities; sensitivity; Circuits; Frequency conversion; Frequency measurement; Frequency synchronization; Frequency synthesizers; Linearity; Logic; Phase locked loops; Radar; Time measurement;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2000 Conference on
Conference_Location :
Sydney, NSW, Australia
Print_ISBN :
0-7803-5744-2
DOI :
10.1109/CPEM.2000.851141
