tailieunhanh - Dual band microstrip antenna for 4G-LTE handheld devices

In this paper, a dual-band antenna that works at 1780 MHz and 2610 MHz has been proposed for 4G-LTE handheld devices. The antenna has been designed on FR4 substrate with sizes of 20 mm × 50 mm × mm to fit the mobile casing. The simulation and measurement results of both return loss and radiation patterns have also been presented. Very good agreement between simulated ans measured data has been obtained. | VNU Journal of Science: Comp. Science & Com. Eng. Vol. 31, No. 1 (2015) 55–59 Dual-band Microstrip Antenna for 4G-LTE Handheld Devices Nguyen Minh Tran, Truong Vu Bang Giang VNU University of Engineering and Technology, Hanoi, Vietnam Abstract The evolution of wireless technology has grown dramatically. In recent years, the fourth generation, 4G-LTE, has been implemented. The 4G expansion firstly demands to construct infrastructures and devices of 4G systems, in which the antenna is an essential part of 4G devices, especially mobile phones. The antenna has to be designed to meet both frequency bands for this new technology and limited size to fit the required housing. All over the world, there are different frequency bands allocated for 4G. Therefore, the multi-band antennas would be very useful. In this paper, a dual-band antenna that works at 1780 MHz and 2610 MHz has been proposed for 4G-LTE handheld devices. The antenna has been designed on FR4 substrate with sizes of 20 mm × 50 mm × mm to fit the mobile casing. The simulation and measurement results of both return loss and radiation patterns have also been presented. Very good agreement between simulated ans measured data has been obtained. c 2015 Published by VNU Journal of Science. Manuscript communication: received 14 January 2015, revised 09 March 2015, accepted 21 March 2015 Corresponding author: Truong Vu Bang Giang, giangtvb@ Keywords: dual- band antenna, 4G-LTE, microstrip antenna. 1. Introduction 4G-LTE, developed by the 3rd Generation Partnership Project, is a standard for wireless data communications technology and an evolution of the previous standards. The goal of 4G technology is to increase the capacity and speed of wireless data networks using new DSP (digital signal processing) techniques and modulations. Currently, Vietnamese Network Service Providers have already accomplished the 3G coverage and provision for users, and preparing to implement 4G technology. The Authority of