Pendulum antenna

Details Pendulum antenna Pendulum antenna

1977-04-18

1979-03-06

Smith, Alfred E.

Communications: radio wave antennas

Antennas

With coupling network or impedance in the leadin

343878, 343765, H01Q 326, H01Q 300, H01Q 112

Patent

active

041433785

ABSTRACT:
A pendulum antenna for a microwave landing system is disclosed. The antenna is an elevation scanning antenna of the phased array type. The aperture, phase shifters, drivers and power distribution manifolds form a column-like structure. The column is suspended like a pendulum inside a fiberglass radome and windshield. The column has a degree of freedom limited by stops, damping means, and lock member. The stops set the allowable pitch angle, the damping means prevents the antenna from swinging back and forth from wind gust effects, and the lock member is used to constrain the antenna during transportation. The radome is freely mounted in a base support having adjustable legs for antenna leveling.

REFERENCES:
patent: 2706781 (1955-04-01), Goss, Jr.
patent: 2745098 (1956-05-01), Cady
patent: 3860931 (1975-01-01), Pope et al.
patent: 3968496 (1976-07-01), Brunvoll
patent: 4020491 (1977-04-01), Bieser et al.

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