Accession Number:

AD0411252

Title:

OPTIMUM APERTURE STUDY.

Descriptive Note:

Final rept.,

Corporate Author:

MARTIN CO BALTIMORE MD

Personal Author(s):

Report Date:

1963-06-01

Pagination or Media Count:

55.0

Abstract:

Efforts were directed to study the applicability of the Wiener-Spencer theorem to antennas. This theorem states that minimum standard deviation of the far-field power pattern occurs when the illumination function corresponds to the lowest mode of vibration of a membrane stretched across the aperture opening. This final report studies various representative distributions and farfield power patterns for different antennas. Also presented are the analytical solutions of optimum illumination distribution for linear, square, circular and elliptical antennas, and the respective expressions for far-field power diffraction pattern, and the zeroth and second moments. The illuminations and far-field patterns for the optimum and nonoptimum cases are plotted. A comparison is made of various nonoptimum distributions and the optimum distributions as determined by the Wiener-Spencer theorem. Moreover, estimates are given of the cost and effort required for the hardware implementation of the antennas with the optimum illumination. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE