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Dual-band, dual-polarization, interleaved cross-dipole and cavity-backed disc elements phased array antenna

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3 Author(s)
Kuan Min Lee ; EMS Lab., Hughes Aircraft Co., El Segundo, CA, USA ; Wang, A.T.S. ; Ruey Shi Chu

In ship, submarine, or airborne satellite communication or multi-function radar operations, dual-band phased array antennas with dual-linear or circular polarizations are needed. We present a dual-band/dual-polarization phased array design using a interleaved cross-dipole radiator and a cavity-backed disk radiator in the same lattice structure. The low band radiator is a disk radiator sitting on top of a dielectric puck in a cavity and the high band radiator is the cross dipole element printed on a low-K dielectric layer above the disk-cavity plane. Dual-linear or circular polarizations can be achieved using these two elements to cover two separate bands with about a 2:1 ratio. This is a relatively low profile, compact and rigid array. Good impedance match for both bands can be obtained over a wide scan volume.

Published in:

Antennas and Propagation Society International Symposium, 1997. IEEE., 1997 Digest  (Volume:2 )

Date of Conference:

13-18 July 1997