COMPACT COPLANAR WAVEGUIDE-FED MONOPOLE ANTENNA WITH A FOLDED GROUND STRIP FOR 5-GHz WIRELESS APPLICATIONS

摘要

The design of a compact coplanar waveguide-fed monopole antenna partially surrounded and coupled by a folded ground strip is presented. By properly tuning the gap between the monopole antenna and the ground strip, it is able to operate in the 5-GHz band for wireless application. From the experimental results, a resonant mode excited at around 5.5 GHz is observed with 10-dB bandwidth measured from 4.88 to 6.3 GHz. Good radiation patterns with near omnidirectional pattern in the azimuth plane are also observed.