Communications: radio wave antennas – Antennas – With polarization filter or converter
Patent
1981-11-06
1983-08-09
Lieberman, Eli
Communications: radio wave antennas
Antennas
With polarization filter or converter
343779, 343786, H01Q 1913, H01Q 1302
Patent
active
043982000
ABSTRACT:
The crosspolarization components radiated by adjacent orthogonally linearly polarized feed horns of a reflector antenna system are compensated by structural modifications incorporated in the feed horns. In a first embodiment, the modified feed horns have curved walls and included shaped septa. Other embodiments involve the use of shaped walls or shaped septa only. In the case of an offset reflector, asymmetric modifications of the wall shape and septa are employed. For flared feed horns with rectangular cross section, the crosspolarization compensation is provided by curving the forward edges of the horn walls convexly or concavely as required.
REFERENCES:
patent: 2712067 (1955-06-01), Kock
patent: 3031664 (1962-04-01), Wielobob
patent: 4042935 (1977-08-01), Ajioka et al.
patent: 4109253 (1978-08-01), Chu
patent: 4115782 (1978-09-01), Han et al.
Amgott Allen E.
General Electric Co.
Lieberman Eli
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