Design of Compact Planar Antenna with WLAN/WiMAX Applications Using Slotted Conductor-Backed Plane

Abstract

A compact microstrip-fed monopole antenna is proposed for wireless local area network (WLAN) and worldwide interoperability for
microwave access (WiMAX) applications. The main features of the proposed antenna are the compact dimensions and band-operating
characteristics that are obtained without modifying the radiator or the ground plane. The size of the antenna is 18mm × 18mm × 0.8mm. By
Using of a pair of mirror г-shaped slots in the conductor-backed plane, the proposed antenna can operate in multiband. The -10 dB s11
bandwidths of them are (2.3 - 2.5 GHz), (3.1 - 4.2 GHz), and (4.6 – 7.5 GHz), respectively, which can cover both the WLAN bands (2.4-2.484
GHz, 5.15-5.35 GHz, and 5.725-5.825 GHz) and the WiMAX bands (3.4-3.69 GHz and 5.25-5.85 GHz). Good omnidirectional radiation
pattern characteristics and enough gains are obtained over the operating bands.