Improving the security performance in mobile wireless computing network using smart directional antenna

The paper discusses the security issues of the infrastructured wireless network and the ad-hoc wireless network using smart directional antennas, and introduces two newly developed smart directional antennas, DE-ESPAR (dielectric embedded electronically steerable parasitic array radiator) and DE-ESMB (dielectric embedded electronically steerable multiple beam) antenna arrays, and their unique performance in improving security performance in a mobile wireless computing network. The further development of the security system using such smart directional antennas in WLAN is also proposed.