Title :
Two-frequency secondary radar incorporating passive transponders
Author :
Davies, D.E.N. ; Makridis, H.
Author_Institution :
University College London, Department of Electronic & Electrical Engineering, London, UK
Abstract :
A radar technique incorporating a simultaneous transmission on different frequencies is described. It is used with passive transponders employing nonlinear diodes that mix the two carrier frequencies and use one of the intermodulation frequencies to generate a reply from the transponder.
Keywords :
radar receivers; radar systems; radar transmitters; nonlinear diodes; passive transponders; two frequency secondary radar;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19730438
