Phase-Locked Loops for Electronically Scanned Antenna Arrays
- 1 January 1961
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IRE Transactions on Space Electronics and Telemetry
- Vol. SET-7 (4) , 95-100
- https://doi.org/10.1109/IRET-SET.1961.5008781
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
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