Design a Compact Monopole Printed Antenna for UMTS,LTE and WLAN Applications

In this paper, a new compact design of the printed monopole antenna has been presented. The single layered antenna has been designed to resonate in wideband frequency for UMTS, LTE and WLAN with enhanced bandwidth of more than 1.25GHz.The antenna has a simple structure consisting of a Tshaped and parasitic element in the ground plane. The proposed antenna has a low profile and can easily be fed by using a 50 Ω microstrip line.It is believed that the size of the antenna is about the smallest among the existing internal mobile antennas for UMTS, LTE and WLAN operation. Compact size, low cost, ease of printed and good radiation parameters respect to the previous designs are the most important advantages of the proposed antenna. The antenna has an overall dimension is 67*50*1.6 mm 3 , when printed on a FR-4 substrate of dielectric constant 4.3.The proposed antenna was designed based on the simulations from Computer Simulation Technology (CST), through which the return loss and other antenna parameters were generated such as gain, VSWR and radiation pattern.