Hussain, N., Aljaloud, K., Hussain, R., Alqahtani, A. H., Khan, Z. U., Tahir, F. A. and Abbasi, Q. H. (2023) Dual-sense slot-based CP MIMO antenna with polarization bandwidth reconfigurability. Scientific Reports, 13(1), 16132. (doi: 10.1038/s41598-023-42569-1) (PMID:37752140) (PMCID:PMC10522704)
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Abstract
In this letter, a compact, planar circularly polarized (CP) sub-GHz slot-based multiple-input-multiple-output (MIMO) antenna with dual sense CP along with polarization bandwidth reconfigurability is presented. The pentagonal reactively loaded slot is fed by two folded tapered feedlines to achieve CP. The antenna offers left-hand-circular polarization (RHCP) with the as well as right hand circular polarization (LHCP). The antenna exhibit linearly polarization (LP) by exciting two ports simultaneously. Moreover, the antenna CP resonance can be reconfigured by varying the capacitance of the varactor diode. The antenna has a wide −10 dB operating frequency band from 578–929 MHz. while the axial ratio (AR) bandwidth ranges from 490–810 MHz. Moreover, the two elements MIMO are optimized and placed on compact dimensions 100 × 100 × 0.76 mm3 to realize pattern diversity. The antenna’s key characteristics are compact size, wide-band sub-GHz operation, dual sense CP, polarization bandwidth reconfigurability and good MIMO performance. Thus, it is a suitable candidate to be utilized in CubeSats applications in sub-GHz bands.
| Item Type: | Articles |
|---|---|
| Additional Information: | This work was supported by King Saud University, Riyadh, Saudi Arabia under Researchers Supporting Project number (RSP2023R474). This work was also supported in parts by EPSRC grant no EP/X5257161/1. |
| Keywords: | Circular polarization, dual-sense, MIMO, slot antenna, polarization bandwidth reconfigurability. |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Tahir, Dr Farooq and Abbasi, Professor Qammer |
| Authors: | Hussain, N., Aljaloud, K., Hussain, R., Alqahtani, A. H., Khan, Z. U., Tahir, F. A., and Abbasi, Q. H. |
| College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
| Journal Name: | Scientific Reports |
| Publisher: | Nature Research |
| ISSN: | 2045-2322 |
| ISSN (Online): | 2045-2322 |
| Copyright Holders: | Copyright © 2023 The Author(s) |
| First Published: | First published in Scientific Reports 13(1):16132 |
| Publisher Policy: | Reproduced under a Creative Commons license |
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