DESIGN OF WIDEBAND MICROSTRIP-FED PLANNAR MONOPOLE ANTENNA FOR MULTIBAND APPLICATIONS

摘要

A novel printed wideband monopole antenna for multiband operations is presented. Good impedance matching in a wide dual-band can be achieved by a simple circular monopole and a rectangular conductor-backed plane with a square hole. The measured 10 dB bandwidth for return loss is from 1.78 to 4.19 GHz about 80% and 5.12 to 6.35 GHz about 21.4% which covering all the 2.4/5.2/5.8 GHz WLAN, 2.5/3.5/5.5 GHz WiMAX, DCS (1710-1880 MHz), PCS (1850-1990 MHz), UMT (1920-2170 MHz), and IMT-2000 (1900-2025 MHz) bands applications. Peak antenna gains have been obtained about 3.39 and 3.96 dBi for the lower and upper bands, respectively.