A Hybrid Mutual Coupling Reduction Technique in a Dual-Band MIMO Textile Antenna for WBAN and 5G Applications
This paper presents a hybrid mutual coupling reduction technique applied onto a dual-band textile MIMO antenna for wireless body area network and 5G applications. The MIMO antenna consists of two hexagonal patch antennas, each integrated with a split-ring (SR) and a bar slot to operate in dual-band...
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2021
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oai:doaj.org-article:b79de9383c004fc78b365fc7c0bfb74a2021-11-18T00:09:05ZA Hybrid Mutual Coupling Reduction Technique in a Dual-Band MIMO Textile Antenna for WBAN and 5G Applications2169-353610.1109/ACCESS.2021.3125049https://doaj.org/article/b79de9383c004fc78b365fc7c0bfb74a2021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9599689/https://doaj.org/toc/2169-3536This paper presents a hybrid mutual coupling reduction technique applied onto a dual-band textile MIMO antenna for wireless body area network and 5G applications. The MIMO antenna consists of two hexagonal patch antennas, each integrated with a split-ring (SR) and a bar slot to operate in dual-band mode at 2.45 GHz and 3.5 GHz. Each patch is dimensioned at <inline-formula> <tex-math notation="LaTeX">$47.2 \times 31$ </tex-math></inline-formula> mm<sup>2</sup>. This hybrid technique results in a simple structure, while enabling significant reduction of mutual coupling (MC) between the closely spaced patches (up to <inline-formula> <tex-math notation="LaTeX">$0.1\lambda$ </tex-math></inline-formula>). This technique combines a line patch and a patch rotation technique, explained as follows. First, a line patch is introduced at an optimized distance to enable operation with a broad impedance bandwidth at both target frequencies. One of the patches is then rotated by 90° at an optimized distance, resulting in a significant MC suppression while maintaining the dual and broad impedance bandwidth. The proposed MIMO antenna is further evaluated under several bending configurations to assess its robustness. A satisfactory agreement between simulated and measured results is observed in both planar and bending conditions. Results show that the MIMO antenna achieves an impedance bandwidth of 4.3 % and 6.79 % in the 2.45 GHz and 3.5 GHz band, respectively. Moreover, very low MC (<inline-formula> <tex-math notation="LaTeX">$S_{21} < -30$ </tex-math></inline-formula> dB) is achieved, with a low (< 0.002) envelop correlation coefficient, and about 10 dB of diversity gain at both desired frequencies using this technique. Even when bent at an angle of 50° at the <inline-formula> <tex-math notation="LaTeX">$x$ </tex-math></inline-formula>- and <inline-formula> <tex-math notation="LaTeX">$y$ </tex-math></inline-formula>-axes, the antenna bent maintained a realized gain of 1.878 dBi and 4.027 dBi in the lower and upper band, respectively. A robust performance is offered by the antenna against the lossy effects of the human body with good agreements between simulated and measured results.Hamza A. MashagbaHasliza A RahimIsmahayati AdamMohd Haizal JamaluddinMohd Najib Mohd YasinMuzammil JusohThennarasan SabapathyMohamedfareq AbdulmalekAzremi Abdullah Al-HadiArif Mawardi IsmailPing Jack SohIEEEarticleArray antennaswearable antennaMIMO antennamutual coupling reductionantenna and propagationbioelectromagneticsElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENIEEE Access, Vol 9, Pp 150768-150780 (2021) |
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DOAJ |
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Array antennas wearable antenna MIMO antenna mutual coupling reduction antenna and propagation bioelectromagnetics Electrical engineering. Electronics. Nuclear engineering TK1-9971 |
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Array antennas wearable antenna MIMO antenna mutual coupling reduction antenna and propagation bioelectromagnetics Electrical engineering. Electronics. Nuclear engineering TK1-9971 Hamza A. Mashagba Hasliza A Rahim Ismahayati Adam Mohd Haizal Jamaluddin Mohd Najib Mohd Yasin Muzammil Jusoh Thennarasan Sabapathy Mohamedfareq Abdulmalek Azremi Abdullah Al-Hadi Arif Mawardi Ismail Ping Jack Soh A Hybrid Mutual Coupling Reduction Technique in a Dual-Band MIMO Textile Antenna for WBAN and 5G Applications |
| description |
This paper presents a hybrid mutual coupling reduction technique applied onto a dual-band textile MIMO antenna for wireless body area network and 5G applications. The MIMO antenna consists of two hexagonal patch antennas, each integrated with a split-ring (SR) and a bar slot to operate in dual-band mode at 2.45 GHz and 3.5 GHz. Each patch is dimensioned at <inline-formula> <tex-math notation="LaTeX">$47.2 \times 31$ </tex-math></inline-formula> mm<sup>2</sup>. This hybrid technique results in a simple structure, while enabling significant reduction of mutual coupling (MC) between the closely spaced patches (up to <inline-formula> <tex-math notation="LaTeX">$0.1\lambda$ </tex-math></inline-formula>). This technique combines a line patch and a patch rotation technique, explained as follows. First, a line patch is introduced at an optimized distance to enable operation with a broad impedance bandwidth at both target frequencies. One of the patches is then rotated by 90° at an optimized distance, resulting in a significant MC suppression while maintaining the dual and broad impedance bandwidth. The proposed MIMO antenna is further evaluated under several bending configurations to assess its robustness. A satisfactory agreement between simulated and measured results is observed in both planar and bending conditions. Results show that the MIMO antenna achieves an impedance bandwidth of 4.3 % and 6.79 % in the 2.45 GHz and 3.5 GHz band, respectively. Moreover, very low MC (<inline-formula> <tex-math notation="LaTeX">$S_{21} < -30$ </tex-math></inline-formula> dB) is achieved, with a low (< 0.002) envelop correlation coefficient, and about 10 dB of diversity gain at both desired frequencies using this technique. Even when bent at an angle of 50° at the <inline-formula> <tex-math notation="LaTeX">$x$ </tex-math></inline-formula>- and <inline-formula> <tex-math notation="LaTeX">$y$ </tex-math></inline-formula>-axes, the antenna bent maintained a realized gain of 1.878 dBi and 4.027 dBi in the lower and upper band, respectively. A robust performance is offered by the antenna against the lossy effects of the human body with good agreements between simulated and measured results. |
| format |
article |
| author |
Hamza A. Mashagba Hasliza A Rahim Ismahayati Adam Mohd Haizal Jamaluddin Mohd Najib Mohd Yasin Muzammil Jusoh Thennarasan Sabapathy Mohamedfareq Abdulmalek Azremi Abdullah Al-Hadi Arif Mawardi Ismail Ping Jack Soh |
| author_facet |
Hamza A. Mashagba Hasliza A Rahim Ismahayati Adam Mohd Haizal Jamaluddin Mohd Najib Mohd Yasin Muzammil Jusoh Thennarasan Sabapathy Mohamedfareq Abdulmalek Azremi Abdullah Al-Hadi Arif Mawardi Ismail Ping Jack Soh |
| author_sort |
Hamza A. Mashagba |
| title |
A Hybrid Mutual Coupling Reduction Technique in a Dual-Band MIMO Textile Antenna for WBAN and 5G Applications |
| title_short |
A Hybrid Mutual Coupling Reduction Technique in a Dual-Band MIMO Textile Antenna for WBAN and 5G Applications |
| title_full |
A Hybrid Mutual Coupling Reduction Technique in a Dual-Band MIMO Textile Antenna for WBAN and 5G Applications |
| title_fullStr |
A Hybrid Mutual Coupling Reduction Technique in a Dual-Band MIMO Textile Antenna for WBAN and 5G Applications |
| title_full_unstemmed |
A Hybrid Mutual Coupling Reduction Technique in a Dual-Band MIMO Textile Antenna for WBAN and 5G Applications |
| title_sort |
hybrid mutual coupling reduction technique in a dual-band mimo textile antenna for wban and 5g applications |
| publisher |
IEEE |
| publishDate |
2021 |
| url |
https://doaj.org/article/b79de9383c004fc78b365fc7c0bfb74a |
| work_keys_str_mv |
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