A Y-Shaped Tri-Band Monopole Antenna with a Parasitic M-Strip for PCS and Wlan Applications

Abstract

A Y-shaped tri-band monopole antenna is proposed in this paper. The antenna consists of a parasitic M-strip and an elliptical slot etched in the ground. With the helps of the parasitic M-strip and the slot, the Y-shaped monopole antenna can easily obtain tri-band characteristic. The proposed antenna has been constructed and tested. The simulated and measured results show that the proposed antenna has three good impedance bandwidths (VSWR < 2) of 220 MHz (about 26% centered at 1.85 GHz), 580 MHz (about 24% centered at 2.4 GHz) and 886 MHz (about 16% centered at 5.4 GHz), which make it easily cover the required bandwidths for PCS band (1850–1990 MHz), and WLAN band (2400–2480 MHz, 5150–5350 MHz, and 5725–5825 MHz) applications.