Compact Y-shape antenna for dual polarized wideband response

Abstract

A novel design of compact Y-shape microstrip antenna for wideband dual polarized response is proposed. A stub in Y-shape patch, tunes the resonance frequency of second order TM20 mode with respect to fundamental TM10 mode and an optimum spacing between them yields bandwidth of more than 260 MHz (>25%). Between two modes, surface currents show orthogonal variations in their directions that yields dual polarized response across the bandwidth. The antenna exhibits broadside pattern with peak gain of more than 6 dBi.