Title :
Phase-Locked Loops for Electronically Scanned Antenna Arrays
Author :
Breese, M. ; Colbert, R. ; Rubin, W. ; Sferrazza, P.
Author_Institution :
Surface Armament Div., Sperry Gyroscope Co., Div., of Sperry Rand Corp., Great Neck, L. I., N. Y.
Abstract :
This paper describes the ATHESA (Automatic THree-dimensional Electronic Scanned Array) technique for achieving very high antenna gain for deep-space communication systems. Phase coherence over a band of frequencies is established on reception automatically and continuously for either stationary or moving targets by phase-locking the signals from antenna elements separated by many wavelengths to a reference antenna element.
Keywords :
Aerospace electronics; Antenna arrays; Electric breakdown; Fires; Missiles; Phase locked loops; Phased arrays; Plasmas; Telemetry; Testing;
Journal_Title :
Space Electronics and Telemetry, IRE Transactions on
DOI :
10.1109/IRET-SET.1961.5008781
