Compact, rugged, flush-mounted antenna operates in sum or difference modes with circular polarization. Radiating elements consist of two pairs of centerfed, interleaved spiral slots in conductive aperature plane. At center feedpoint of each slot pair is balanced feed assembly. Center points are fed from split-tube coaxial balun passing through quarter-wave length deep cavity. Circularly polarized patterns represent both rceived and transmitted signals.
Cavity-backed spiral-slot antenna
NASA Tech Briefs ; 5 , 4
1981-04-01
Miscellaneous
No indication
English
Crossed-Slot Cavity-Backed Antenna with Improved Hemispherical Coverage
British Library Conference Proceedings | 2005
|End-Loaded, Cavity-Backed, Cross-Slot Antennas
NTRS | 1991
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