A compact dual-band wide-beam microstrip antenna array

Abstract

A compact dual-band wide-beam microstrip antenna array with shaded one-dimensional symmetric parasitic patches(SODSPP) is designed in this paper. This array consists of six X band elements, three Ku band elements and two different band feed-networks using three microstrip T-junctions with 2:1 power ratio, with wide bandwidth and low cross-polarization. The design of the 3×2, 3×1 array and SODSPP contribute to broaden beamwidth. Every two driven patches share two parasitic patches to realize miniaturization of the dual-band antenna. Simulation results show that the impedance bandwidths of X and Ku bands are 33% and 16.8%, and the beamwidths in H plane are ±20° and ±28°, respectively.