Interference suppression

Details Interference suppression Interference suppression

1951-06-20

1977-03-01

Wilbur, Maynard R.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 5R, 343 11R, 343 13R, 343100LE, G01S 736, H04B 700

Patent

active

040104699

ABSTRACT:
4. A system for reducing the effect of unwanted signals directed toward a receiver intended to receive reflected pulsed signals through an antenna having a radiation pattern that includes a desired main lobe and undesired additional areas, which includes: means for receiving said reflected pulsed signals; other means for receiving said unwanted signals; means for combining the outputs of both said receiving means in opposition; means periodically adjusting the output of one of said receiving means relative to the other to provide a minimum output of said combining means; and means holding constant the adjustment of said adjusting means between said periodic adjustments.

REFERENCES:
patent: 2279031 (1942-04-01), Cockerell et al.
patent: 2446244 (1948-08-01), Richmond
patent: 2494339 (1950-01-01), Keister
patent: 2502454 (1950-04-01), Grieg

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