Open AccessA Microstrip MIMO Antenna with Enhanced Isolation for WiMAX Applications
Author(s) -
Nguyễn Ngọc Lan,
Nguyễn Thị Hằng,
Hồ Văn Cừu
Publication year - 2019
Publication title -
research on information comunication technology
Language(s) - English
Resource type - Journals
ISSN - 1859-3534
DOI - 10.32913/mic-ict-research.v2019.n2.869
Subject(s) - wimax , mimo , antenna efficiency , electronic engineering , antenna (radio) , microstrip antenna , isolation (microbiology) , antenna measurement , computer science , 3g mimo , antenna factor , optoelectronics , electrical engineering , telecommunications , physics , engineering , wireless , bioinformatics , biology , beamforming
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.