Dual band, low sidelobe, high efficiency mirror antenna

Details Dual band, low sidelobe, high efficiency mirror antenna Dual band, low sidelobe, high efficiency mirror antenna

1982-06-15

1984-09-11

Lieberman, Eli

Communications: radio wave antennas

Antennas

With spaced or external radio wave refractor

343756, 343779, 343781P, 343909, H01Q 1906, H01Q 19195

Patent

active

044713592

ABSTRACT:
A dual band mirror antenna employing a continuous mirror without a hole. e-by-side feeds for each band and an electromagnetic lens, located behind a rotatable twist reflector (the mirror), collimate beams toward a pair of polarized reflectors located near the twist reflector and tilted to aim the reflected energy toward the twist reflector. One polarized reflector is reflective at the higher radiofrequency band and transparent at the lower radiofrequency band. The other polarized reflector is reflective at both bands. Energy directed back toward the polarized reflectors from the twist reflector passes through the polarized reflectors to free space.

REFERENCES:
patent: 2958863 (1960-11-01), Ramsay
patent: 3005983 (1961-10-01), Chandler
patent: 3281850 (1966-10-01), Hannan
patent: 3754272 (1973-08-01), Goldstone et al.
patent: 3924239 (1975-12-01), Fletcher et al.
patent: 4070678 (1978-01-01), Smedes
patent: 4220957 (1980-09-01), Britt

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