Broadband corrugated horn antenna

Details Broadband corrugated horn antenna Broadband corrugated horn antenna

1976-06-01

1977-08-02

Lieberman, Eli

Communications: radio wave antennas

Antennas

Wave guide type

333 98M, H01Q 1302

Patent

active

040400611

ABSTRACT:
Broadband (8-18 GHz) operation of a horn antenna with broadband corrugations is achieved by provision of dissipative TM.sub.11 mode suppressor means in the input waveguide feed to the horn. For a conical horn the input feed waveguide is circular and the mode suppressor means comprises a pair of axially extending diametrically spaced conductive wires or rods supported within the waveguide in dielectric foam, or alternatively, a cylindrical resistance card similarly supported coaxially with the waveguide. For a square corrugated horn of this type, the input waveguide is square and the mode suppressor means comprises a pair of parallel spaced axially extending resistance cards located in the planes of the magnetic field nulls in the waveguide.

REFERENCES:
patent: 3413642 (1968-11-01), Cook
patent: 3754273 (1973-08-01), Takeichi et al.

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