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Design and performance of large phased arrays of aperture stacked patches

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1 Author(s)
Waterhouse, R.B. ; Dept. of Commun. & Electron. Eng., RMIT Univ., Melbourne, Vic., Australia

We present a technique to achieve large-bandwidth and low-profile printed phased arrays that can give good sky coverage; that is, a reasonable scan range and, therefore, may be suited to applications such as radio astronomy. The microstrip arrays consist of aperture stacked patches and can exhibit VSWR <2:1 bandwidths in excess of an octave over a scanning range of ±45° in the principal planes. A thorough investigation of these microstrip phased arrays is given using an infinite array analysis and a design strategy to achieve broad-band characteristics is proposed. It is shown that the element spacing and the dielectric material thicknesses are critical in optimizing the scan/bandwidth performance

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Antennas and Propagation, IEEE Transactions on  (Volume:49 ,  Issue: 2 )