Abstract

A novel single-layer wideband cavity-backed E-shaped microstrip patch antennais proposed. By cutting a U-slot on the E-shaped patch and introducing a rectangle metallic cavity backed on the substrate just under the patch, the proposed antenna can generatevery wide impedance bandwidths. Through a two-section microstrip line impedance transformer, the designed microstrip antenna is fed by a 50Ω coplanar microstrip transmission line. The obtained impedance bandwidth reaches about 47%.

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