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The Scientific World Journal
Volume 2014, Article ID 725806, 10 pages
http://dx.doi.org/10.1155/2014/725806
Research Article

Design and Optimization of LTE 1800 MIMO Antenna

1Center for Space Science, Universiti Kebangsaan Malaysia (UKM), 43600 Bangi, Malaysia
2Department of Electrical, Electronic and Systems Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia (UKM), 43600 Bangi, Malaysia

Received 16 January 2014; Accepted 23 April 2014; Published 20 May 2014

Academic Editor: Eva Antonino Daviu

Copyright © 2014 Huey Shin Wong et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A multiple input and multiple output (MIMO) antenna that comprises a printed microstrip antenna and a printed double-L sleeve monopole antenna for LTE 1800 wireless application is presented. The printed double-L sleeve monopole antenna is fed by a 50 ohm coplanar waveguide (CPW). A novel T-shaped microstrip feedline printed on the other side of the PCB is used to excite the waveguide’s outer shell. Isolation characteristics better than −15 dB can be obtained for the proposed MIMO antenna. The proposed antenna can operate in LTE 1800 (1710 MHz–1880 MHz). This antenna exhibits omnidirectional characteristics. The efficiency of the antenna is greater than 70% and has high gain of 2.18 dBi.