Design and Performance Antenna Diversity for MIMO WiMAX Mobile Terminals
Mohannad J Mnati
Mohannad J Mnati, Electronic Technique Dept. Institute of Technology, Baghdad, Iraq.
Manuscript received on October 21, 2013. | Revised Manuscript received on November 01, 2013. | Manuscript published on November 05, 2013. | PP: 210-215 | Volume-3 Issue-5, November 2013. | Retrieval Number: E1937113513/2013©BEIESP
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Abstract: New evolutions in wireless communications have shown using multiple antenna elements at both transmitter and the receiver, it is possible to substantially increase the capacity in a wireless communication system without increasing the transmission power and bandwidth. This system with multiple antenna elements at both link-ends is termed the MIMO (Multiple-Input Multiple-Output) system. In spite of considerable research being done on MIMO systems; the design of realistic diversity antennas on mobile terminals for MIMO systems remains a challenging issue. The main challenge in designing two or more antennas on a small mobile terminal is to achieve a high isolation between the antennas. It is very difficult to achieve a high isolation with the existing handset antennas. This article presents the performance analysis of the multiple-input-multiple-output Diversity antenna fornext generation WiMAX mobile handset applications Planar Inverted-F Antenna (PIFA). Antenna structures considering the practical ground size of a mobile handset proposed to estimate the proposed structures, mutual coupling and envelope correlations were considered. Also the diversity gain and correlation were measured from simulation result. The relationships between all parameters were analyzed based on the measured results.
Keywords: PIFA, Mobile, Antenna, WiMAX, MIMO, Diversity.