Non-squinting mast antenna and closed loop control thereof

Details Non-squinting mast antenna and closed loop control thereof Non-squinting mast antenna and closed loop control thereof

1995-11-30

1997-12-02

Wimer, Michael C.

Communications: radio wave antennas

Antennas

Spiral or helical type

343723, H01Q 1108

Patent

active

056941404

ABSTRACT:
A non-squinting helical antenna is divided into segments separated by a coupler. This coupler is preferably a four port coupler which serves as a summation and difference power divider. Such a four port coupler allows the formation of a closed loop for controlling the steering angle of the antenna. The summation and difference signals between segments are monitored, and the ratio of these signals is used to determine and correct error in steering. The steering angle of the antenna can thus be maintained over a range of frequencies within a decibel of error.

REFERENCES:
patent: 3419875 (1968-12-01), Aasted
patent: 3629937 (1971-12-01), Fredriksson et al.
patent: 3702481 (1972-11-01), Koller et al.
patent: 5485170 (1996-01-01), McCarrick

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