Title :
Passive coded transponder using an acoustic-surface-wave delay line
Author :
Davies, D.E.N. ; Withers, M.J. ; Claydon, R.P.
Author_Institution :
University College London, Department of Electronic & Electrical Engineering, London, UK
Abstract :
A tapped acoustic-surface-wave delay line is used to produce a passive coded transporder for short-range applications. The technique is particularly convenient for operation in the v.h.f. band. It requires very low interrogation power, of the order of 2 mW, and an operating bandwidth of about 1 MHz.
Keywords :
acoustic surface wave devices; radio receivers; radio transmitters; ultrasonic delay lines; 1 MHz; VHF; passive coded transponder; tapped acoustic surface wave delay line;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19750125
