NASA NTRS · 19800000154
Dual-frequency bidirectional antenna
Abstract
Simultaneous two-way communication at 20 and 30 GHz is possible with versatile paraboloid-dish antenna. Developed for two-way communications between Space Shuttle and ground station, antenna includes parabolic reflector, feed horn, waveguide network, and single-axis gimbal mounting. System resolution and accuracy are better than 1 percent.
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Kummer, W. H.. 1980-09-01. Dual-frequency bidirectional antenna. https://ntrs.nasa.gov/citations/19800000154
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