Dual-band asymmetric planar dipole antenna backed by conducting reflector for WLAN applications

Abstract

This paper proposes a dual-band planar antenna composed of asymmetric dipole elements backed by a conducting reflector that is realized by incorporating a LC trap circuit. The proposed antenna achieves the 2.4 GHz and 5 GHz dual-band operations for the purpose of WLAN applications. It is shown that the measured gains were 3.0 dBi at 2.44 GHz, 5.3 dBi at 5.25 GHz, and 5.8 dBi at 5.6 GHz, respectively. It is also confirmed that this antenna approximately retains a unidirectional property and a superdirectivity as well.