A compact printed antenna for multiband wireless applications

This paper presents a design of a compact microstrip patch antenna with the ability of controlling the number of bands and the operating frequencies independently. The antenna comprises a main patch and four sub-patches fed by a 50Ω microstrip line. It is designed to generate up to five separate modes to cover the frequency range from 900 MHz to 3 GHz for the operation of wireless devices supporting multiple standards including Global System for Mobile communication (GSM900, 880–960 MHz), Digital Communication System (DCS1800, 1710–1880 MHz), Universal Mobile Telecommunication System (UMTS, 1920–2170 MHz), Wireless Local Area Network (WLAN, 2400–2483.5 MHz) and low band Worldwide Interoperability for Microwave Access (WIMAX, 2.5 to 2.8 GHz) The design verified through both numerical simulation and measurement of an experimental prototype.