Research of Dual-Polarized monopulse microstrip antenna array

A K band Dual-Polarized monopulse microstrip patch antenna array has been designed. The 4*4 retangular patchs and the cross shaped sum-difference network both are optimized by CST.Each polarized antenna array, sum-difference and the feed network are placed on the same layer respectively, which makes this antenna array smaller and compacter. H-shaped apertures are used to promote port-to-port isolation result as −25dB and facilitate the complex microstrip network.