A Microstrip MIMO Antenna with Enhanced Isolation for WiMAX Applications

  • Nguyễn Ngọc Lan Saigon University
  • Nguyễn Thị Thu Hằng Saigon University
  • Hồ Văn Cừu Saigon University
DOI: https://doi.org/10.32913/mic-ict-research.v2019.n2.869
Keywords: MIMO antenna, mutual coupling, defected ground structure (DGS), microstrip antenna

Abstract

In this paper, a multiple-input multipleoutput (MIMO) antenna with high isolation is designed using defected ground structure (DGS). The proposed antenna is constructed by two sets of four elements (2×2), which are designed at the central frequency of 3.5 GHz for Worldwide Interoperability for Microwave Access (WiMAX) applications. The antenna is fabricated on a FR4 substrate with an overall size of 144 × 99 × 1.6 mm. Thanks to DGS, the designed MIMO antenna achieves a high isolation of 30 dB and a high radiation efficiency of over 90%. Besides, this MIMO antenna attains a 7.5 dBi gain. There is a good agreement between the simulated S-parameters and the measurement results.

Author Biographies

Nguyễn Ngọc Lan, Saigon University

Nguyen Ngoc Lan received the Master and Ph.D. degrees in School of Electronics and Telecommunications, Hanoi University of Science and Technology, Vietnam, in 2014 and 2019, respectively. Currently, she is a lecturer at the Faculty of Electronics and Telecommunications, Saigon University, Vietnam. Her research interests include microstrip antenna, mutual coupling, MIMO antennas, array antennas, reconfigurable antennas, polarization antennas, metamaterial, and metasurface.

Nguyễn Thị Thu Hằng, Saigon University

Nguyen Thi Thu Hang received the Bachelor and Master degrees from the Ho Chi Minh City University of Technology, Vietnam, in 1999 and 2002, respectively. Currently, she is a lecturer at the Faculty of Electronics and Telecommunications, Saigon University, Vietnam. Her research interests include digital signal processing, FPGA, and integrated circuit design.

Hồ Văn Cừu, Saigon University

Ho Van Cuu received the Ph.D. degree from the Department Telecommunication, Posts and Telecommunications Institute of Technology, Vietnam, in 2006. Currently, he is a lecturer at the Faculty of Electronics and Telecommunications, Saigon University, Vietnam. His research interests include wireless communications and digital communications.

Published
2019-12-31
Issue
Vol 2019 No 2
Section
Regular Articles