Multimode diagonal feed horn

Details Multimode diagonal feed horn Multimode diagonal feed horn

1981-01-12

1983-06-14

Lieberman, Eli

Communications: radio wave antennas

Antennas

Wave guide type

H01Q 1302

Patent

active

043886256

ABSTRACT:
In the past, conventional diagonal horns have been used for providing high gain and equalization of the beam widths in the E and H planes. However, a problem has existed in such horns in that cross-polarized lobes are present in the intercardinal lobes which deleteriously affect the horn's polarization purity. To overcome this, the diagonal horn technique is utilized in a multiflare pyramidal horn. Preferably, the pyramidal horn has two pyramidal sections each having a different flare angle. These flare angles are set so that the E and H fields will be tapered to improve equalization of the beam widths in the intercardinal planes to that in the E and H planes and to reduce the cross-polarized lobes in the intercardinal planes. The result is a compact diagonal horn having high gain without the polarization difficulties previously found in the intercardinal planes of such prior diagonal horns.

REFERENCES:
patent: 2851686 (1958-09-01), Hagaman
patent: 3068478 (1962-12-01), Hagaman
patent: 3287730 (1966-11-01), Kerr
patent: 3662393 (1972-05-01), Cohn
patent: 3680145 (1972-07-01), Beguin
patent: 3821741 (1974-06-01), D'Oro et al.

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