A Compact Planar Microstrip Patch Antenna in Commercial Ultra-Wideband Spectrum

A compact microstrip patch antenna of size 35mmx30mmx0.8mm is projected here. The radiator looks like Pillow which attained broad aperture and cover wide spectrum from 3 to 14. 26GHz (130.5%). The antenna offers omnidirectional radiation patterns with stable gain variation and high radiation efficiency in the covered spectrum. The antenna is suitable for many ultra-wideband wireless technologies, especially for indoor communication.