Five-port monopulse antenna feed structure with one dedicated tr

Details Five-port monopulse antenna feed structure with one dedicated tr Five-port monopulse antenna feed structure with one dedicated tr

1985-12-26

1987-12-08

Sikes, William L.

Communications: radio wave antennas

Antennas

Wave guide type

343786, 343840, 343841, H01Q 152, H01Q 1302

Patent

active

047121106

ABSTRACT:
An antenna feed structure for use with a parabolic reflector in amplitude-comparison monopulse radar applications employs a dedicated transmit feed centered within a four-port receive array of conventional element spacing to eliminate the need for a circulator or other transmit/receive device while retaining satisfactory receive array performance. Isolation pins placed around the transmit port act to decouple it from the receive ports, and a double waveguide run to the transmit port reduces uneven heating and related phase imbalance in adjacent receive waveguide runs.

REFERENCES:
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patent: 4096482 (1978-06-01), Walters
patent: 4241353 (1980-12-01), Salvat et al.
Sciambi, "Five Horn Feed Improves Monopulse Performance", Microwaves, Jun. 1972, pp. 56-58.

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