Apparatus for eliminating amplitude modulation interference in c

Details Apparatus for eliminating amplitude modulation interference in c Apparatus for eliminating amplitude modulation interference in c

1971-08-03

1980-09-23

Hubler, Malcolm F.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 18E, G01S 736, G01S 1368

Patent

active

042246229

ABSTRACT:
The signal received through the fixed nonscanning transmitting lobe of the antenna in LORO conically scanning radar systems is demodulated to derive the interfering amplitude modulation. This modulation is then used to apply an amplitude modulation to the signal received through the scanning lobe that is equal and opposite in phase to the interfering modulation, thereby cancelling the interfering modulation and leaving only the modulation due to the conical scanning. Applications to both mechanically and electrically scanned systems are described.

REFERENCES:
patent: 2464258 (1949-03-01), Prichard
patent: 2946049 (1960-07-01), Stotz
patent: 3095565 (1963-06-01), Schelisch
patent: 3281837 (1966-10-01), Van Hijfte

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