Far-field nulling technique for reducing the susceptibility to c

Details Far-field nulling technique for reducing the susceptibility to c Far-field nulling technique for reducing the susceptibility to c

1984-06-15

1986-11-18

Lieberman, Eli

Communications: directive radio wave systems and devices (e.g.,

Directive

Including polarized signal communication transmitter or...

343778, 333156, 342427, H01Q 2106, H01Q 2124

Patent

active

046238913

ABSTRACT:
A technique for reducing cross-polarized signals in the axis of four-port al-polarized antennas. The resulting lower cross-polarized signals reduce a tracking antenna's susceptibility to tracking errors and to breaklocks. Some energy from the transmission line connected to the (V) port is coupled, after proper attenuation and phase adjustment, and transmitted through the (H) port, thereby nulling out the (V) cross-polarized pattern.

REFERENCES:
patent: 3028591 (1962-04-01), Hattingly
patent: 3308468 (1967-03-01), Hannan
patent: 3618092 (1971-11-01), Waineo
patent: 4198641 (1980-04-01), Gibson

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