High-yield active printed-circuit antenna system for frequency-h

Details High-yield active printed-circuit antenna system for frequency-h High-yield active printed-circuit antenna system for frequency-h

1991-03-06

1993-04-27

Hille, Rolf

Communications: radio wave antennas

Antennas

Microstrip

342 25, 342368, 342361, 343853, H01Q 1380, H01Q 21060, H01Q 3260

Patent

active

052066550

ABSTRACT:
A high-efficiency active printed-circuit antenna system for pulsed frequency-hopping space radar electronically scanned in two planes encompasses in its timing diagram the transmission of a horizontal polarization pulse, the reception of echoes from a previous horizontal polarization pulse, the transmission of a vertical polarization pulse and the reception of echoes from a previous vertical polarization pulse. The system comprises several thousand MMIC modules distributed over the antenna and each connected to a printed-circuit radiating element comprising a plurality of dual polarized square patches connected by microstrip lines which excite them with the same amplitude and the same phase at two perpendicular ports. Switching between the two ports procures transmission or reception with horizontal or vertical polarization.

REFERENCES:
patent: Re32369 (1987-03-01), Stockton et al.
patent: 4490719 (1984-12-01), Botwin et al.
patent: 4737793 (1988-04-01), Munson et al.
patent: 4741778 (1988-05-01), Horie et al.
patent: 4893126 (1990-01-01), Evans
patent: 4987425 (1991-01-01), Zahn et al.
Onde Electrique, vol. 69, No. 2, Mar. 1989, Paris, France, pp. 7-14; Pourailly and Guerin: "Avenir des antennes-reseaux actives--Active array antennas in the future".
Microwave Journal, vol. 31, No. 3, Mar. 1988, Dedham, USA, pp. 113-125; Mcllvena; "Monolithic Phased Arrays for EHF Communications Terminals".

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