Technique for reducing near-in sidelobes of an offset antenna

Details Technique for reducing near-in sidelobes of an offset antenna Technique for reducing near-in sidelobes of an offset antenna

1979-08-22

1980-10-28

Lieberman, Eli

Communications: radio wave antennas

Antennas

Wave guide type

343840, H01Q 1302, H01Q 1913

Patent

active

042310431

ABSTRACT:
The present invention relates to technique for reducing near-in sidelobes of an offset antenna. The method comprises positioning at least one piece of microwave absorbing material on a sector of the edge of the reflecting surface of the offset main reflector closest to the focal point of the antenna. The material is positioned on the portion of the edge of the reflecting surface nearest the focal point of the main reflector in such a manner as to achieve substantial selective reduction of the near-in sidelobes generated by the antenna.

REFERENCES:
patent: 2597313 (1945-06-01), Gardner
patent: 3101473 (1963-08-01), Fenlon
patent: 3156917 (1964-11-01), Parmeggiani
patent: 3314071 (1967-04-01), Lader et al.
patent: 3995274 (1976-11-01), Schwartz et al.
Peters et al.; IEEE Trans. EMC-6, No. 1, Jan. 1964, RFI Reduction by Control of Antenna Sidelobes, pp. 1-11.
Yokol, et al.; Low-Sidelobe Paraboloidal Antenna with Microwave Absorber, Elec. & Comm. in Japan, vol. 54-B, No. 11, pp. 34-39.
Hamid et al.; Radiation Characteristics of Dielectric-Loaded Horn Antennas, Electronic Letters, vol. 6, No. 1, Jan. 8, 1970, pp. 20-21.
Ashton et al.; Rectangular Horn with Dielectric-Slab Insert; Electronic Letters, vol. 9, No. 2, Jan. 25, 1973, pp. 26, 27.

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