Multiple frequency antenna feed

Details Multiple frequency antenna feed Multiple frequency antenna feed

1987-04-13

1991-08-20

Wimer, Michael C.

Communications: radio wave antennas

Antennas

Plural separate diverse type

343700MS, 343781R, 343786, H01Q 13100, H01Q 13080, H01Q 1380

Patent

active

050418408

ABSTRACT:
A multiple band antenna feed used with parabolic reflector antennas and the like. The feed is arranged as two coaxially disposed waveguides. A planar array of patch elements is disposed at the end of the coaxial waveguides so the energy in each band radiates from a common phase center. This simplifies the arrangement of associated subreflectors.

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"Wide-Band Communication Satellite Antenna Using a Multifrequency Primary Horn", Kumazawa et al, May 1975, IEEE Transactions on Antennas and Progogation, pp. 404-407.
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"A Dual-Polarized 5-Frequency Feed", Williams et al., COMSAT Laboratories, MD.
"Signal Separator for Dual-Frequency Antenna" by W. Hartop, NASA Tech Briefs, 1979.

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