Title :
Frequency translation using variable delay
Author :
Myers, Glen A. ; Amin, Ahmed Fahmy
Author_Institution :
US Naval Postgraduate Sch., Monterey, CA, USA
fDate :
5/1/1990 12:00:00 AM
Abstract :
It is shown how, using clocked delay systems, it is possible to translate the frequency of an applied periodic voltage. The translation can represent an increase or a decrease in frequency. Moreover, the amount of the translation can itself be made to change with time. A clocked delay system is constructed in a straight-forward manner using shift registers. The theory is tested using clock rates that change linearly with time and using clock rates that provide a linear time variation of delay. The resulting frequency translation is measured for sinusoidal, triangular and square wave inputs. The results are in good agreement with the theory
Keywords :
delays; frequency convertors; shift registers; applied periodic voltage; clocked delay systems; frequency translation; shift registers; sinusoidal input; square wave inputs; triangular input; variable delay; Charge coupled devices; Circuits; Clocks; Delay effects; Doppler shift; Frequency; Phase modulation; Shift registers; Strontium; Voltage;
Journal_Title :
Acoustics, Speech and Signal Processing, IEEE Transactions on