Title :
Design and performance of large phased arrays of aperture stacked patches
Author :
Waterhouse, Rod B.
Author_Institution :
Dept. of Commun. & Electron. Eng., RMIT Univ., Melbourne, Vic., Australia
fDate :
2/1/2001 12:00:00 AM
Abstract :
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
Keywords :
antenna phased arrays; electric impedance; microstrip antenna arrays; scanning antennas; VSWR; broadband characteristics; design strategy; dielectric material thickness; element spacing; infinite array analysis; input impedance; large phased arrays; low-profile printed phased arrays; microstrip arrays; microstrip phased arrays; scan range; scan/bandwidth performance optimization; sky coverage; Apertures; Application specific processors; Bandwidth; Costs; Microstrip antenna arrays; Microstrip antennas; Phased arrays; Polarization; Radio astronomy; Space technology;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
