This thesis presents the development of array antenna for Long term Evolution (LTE) and Wireless Local Area Network (WLAN) applications. In next generation wireless communication it is very essential to improve the coverage area and efficiency of WLAN networks in order to use for long area. LTE can be a great solution acted as wireless backhaul to improve WLAN network. In this thesis two types of antenna as double-sided array antenna and U-slotted parasitically coupled antenna array have been investigated for LTE and WLAN applications. Double-sided array antenna are formed using 4×2 radiating patches by quarter wavelength transmission line contains at the both side of FR-4 substrate. Different dimension of L-slot has been inserted at both side radiating patches. It is found out that the upper side of the array with smaller L-slot capable to excite at upper frequency (5.8 GHz) while at the lower side with bigger L-slot capable to excite at lower frequency (2.6 GHz). Moreover it achieved high gain at both frequencies. U-slotted parasitically coupled antenna array has been designed for bandwidth enhancement and dual-band operation for LTE and WLAN applications. The array is formed by using two driven U-slotted patches feed by quarter wavelength transmission line while another four U-slotted patches are coupled parasitically with driven array.
