Accession Number : AD0259769

Title :   CRITERIA FOR CONICALLY SCANNED TRACKING ANTENNAS

Corporate Author : JOHNS HOPKINS UNIV SILVER SPRING MD APPLIED PHYSICS LAB

Personal Author(s) : CHESTON,T.C.

Report Date : FEB 1961

Pagination or Media Count : 1

Abstract : Criteria for conical-scan type tracking antennas are analyzed in a generalized way, with particular reference to cross-over gain, modulation sensitivity and radiation pattern. The analysis covers amplitude and phase comparison methods. It is shown that the radiation patterns of interest are not, as generally believed, the individual static patterns, but their RF vector sumAND DIFFERENCE. A method of measuring these sum and difference patterns is suggested. (Author)

Descriptors :   *ANTENNA RADIATION PATTERNS, *NUTATING ANTENNAS, *RADAR ANTENNAS, *RADAR TRACKING, AMPLIFIERS, AMPLITUDE MODULATION, ANTENNA LOBES, MATHEMATICAL ANALYSIS, MEASUREMENT, PHASE SHIFT CIRCUITS, RADAR EQUIPMENT, TRACKING

Distribution Statement : APPROVED FOR PUBLIC RELEASE