Accession Number:

AD0261020

Title:

POLARIZATION VARIATION OF ELLIPTICALLY-POLARIZED RADIATORS

Descriptive Note:

Corporate Author:

OHIO STATE UNIV RESEARCH FOUNDATION COLUMBUS ANTENNA LAB

Personal Author(s):

Report Date:

1960-10-31

Pagination or Media Count:

1.0

Abstract:

Three general theorems giving conditions for a radiating system to exhibit stationary polarization, stationary gain and the coincidence of stationary polarization and gain in a prescribed direction are presented these differ significantly from the earlier theorems of Bouix because of a sign error in his work. A necessary and sufficient conditi n for the polarization invariance of a circularly-p larized radiator is derived. The theorems are applied to a number of circularly polarized sources and antennas which are broadly directional. The polarization change with respect to aspect for the radiators possessing a direction of stationary polarization at the pattern maximum is small however, in the case of the helix, whose pattern maximum is not in the direction of tationary polarization, the change is comparatively large. The polarization variation which occurs en these antennas are used as the elements of an array or the primary feed of a reflector is considered. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE