Accession Number:

AD0274783

Title:

INVESTIGATIONS OF FLUSH-MOUNTED ANTENNAS

Descriptive Note:

Corporate Author:

AERO GEO ASTRO CORP ALEXANDRIA VA

Personal Author(s):

Report Date:

1961-12-31

Pagination or Media Count:

1.0

Abstract:

The principle investigation concerned the farfield effects of a planar system of transverse metallic barriers of minimal height on waves emergent from moderately directive, low-silhouette feed structure. Comparison of measured far-field patterns was made for a number of cases involving both constant and variable barrier spacing. A comparison of representative measured gain values for a metallic barrier structure of large extent with those for a single horizontal reflecting plane was made. Results for cases approximating arithmetic variation of barrier spacing using 3 rates of increase with distance from the feed aperture indicate that the number of barriers for optimum effect is determined by a requisite value of spacing near the feed and a fixed upper limit of spacing associated with spurious grating effects. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE