Miniaturized four-port UWB MIMO antennas with triple-band rejection using single EBG structures

This research paper introduces a ultra-wideband (UWB) multiple input multiple output (MIMO)/diversity antenna with three rejected bands using one compact electromagnetic band gap (EBG) structure. The suggested EBG structure rejects three bands at WiMAX, WLAN, and the X-band within the passband of th...

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Bibliographic Details
Published in:International journal of microwave and wireless technologies 2022-03, Vol.14 (2), p.185-193
Main Authors: Thakur, Ekta, Jaglan, Naveen, Dev Gupta, Samir
Format: Article
Language:English
Subjects:
Antennas
Banded structure
Bandwidths
Correlation coefficients
Decoupling
Ground plane
Impedance matching
Metamaterials and Photonic Bandgap Structures
MIMO communication
Radiation
Scientific papers
Substrates
Superhigh frequencies
Ultrawideband
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Summary:This research paper introduces a ultra-wideband (UWB) multiple input multiple output (MIMO)/diversity antenna with three rejected bands using one compact electromagnetic band gap (EBG) structure. The suggested EBG structure rejects three bands at WiMAX, WLAN, and the X-band within the passband of the UWB antenna. To achieve compactness in the conventional EBG structure, two via and square slots are introduced. This structure contributes to better impedance matching by using tapered feedline and slots in the radiating patch. To improve the isolation among all four compact UWB monopoles, decoupling strips are extended from the ground plane. Furthermore, the |S21| is below 17 dB in between the antenna elements and the envelope correlation coefficient is below 0.5, which are tolerable values within the UWB range. Furthermore, different MIMO/diversity characteristics are also discussed. An FR-4 substrate with dimensions of 38 × 45 × 1.6 mm3 is used for the fabrication of the suggested structure.
ISSN:1759-0787
1759-0795
DOI:10.1017/S1759078721000325