Ultra wideband phased array antenna

Details Ultra wideband phased array antenna Ultra wideband phased array antenna

1993-03-31

1995-02-14

Hajec, Donald

Communications: radio wave antennas

Antennas

With spaced or external radio wave refractor

343753, 343793, H01Q 1906

Patent

active

053899393

ABSTRACT:
An ultra wideband (UWB) phased array antenna using a frequency-multiplexing, space-fed lens with a UWB feed horn achieves multi-octave bandwidth. The lens includes two UWB radiating apertures with relatively narrow band phase shifters connecting corresponding radiating elements of the arrays. Each aperture multiplexes the incoming UWB signal into separate frequency bands so that the phase shifters need only be tuned to these narrower frequency bands, and are set to form a beam in the desired direction. For wide instantaneous bandwidth operation, the beams from the various frequency bands are collimated in the same direction. For multi-mode operation, the beams corresponding to the various frequency bands are formed in different directions. The phase shifters need have a maximum phase shift of 360 degrees.

REFERENCES:
patent: 3568184 (1971-03-01), Drabowitch
patent: 3631503 (1974-12-01), Tang et al.
patent: 4010471 (1977-03-01), Smith
patent: 4091387 (1978-01-01), Profera
patent: 5087922 (1992-02-01), Tang et al.
"Waveguide Handbook," N. Marcuvitz, pp. 280-285, Dover Publication, 1951.

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