Computationally optimized MIMO antenna with improved isolation and extended bandwidth for UWB applications
Isolation and bandwidth are the two important performance parameters of the multiple-input-multiple-output (MIMO) antenna. A small footprint of an antenna with enhanced isolation and extended bandwidth is highly desirable for space-limited UWB applications. In this paper, we present a compact and co...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2021
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/150232 |
| _version_ | 1811676401111138304 |
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| author | Sharma, Madan Kumar Kumar, Mithilesh Saini, J. P. Singh, Satya P. |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Sharma, Madan Kumar Kumar, Mithilesh Saini, J. P. Singh, Satya P. |
| author_sort | Sharma, Madan Kumar |
| collection | NTU |
| description | Isolation and bandwidth are the two important performance parameters of the multiple-input-multiple-output (MIMO) antenna. A small footprint of an antenna with enhanced isolation and extended bandwidth is highly desirable for space-limited UWB applications. In this paper, we present a compact and computationally optimized MIMO antenna for UWB applications. The proposed antenna consists of two micro-strip-fed semicircular radiating elements. The inverted prism-shaped ground stub is used to enhance isolation. A truncated-shaped partial ground plane with two ground slots is used for impedance matching over the extended UWB. The circular monopole radiating elements of the reference antenna (RA) are converted into semicircular radiating elements for efficient utilization of the available space. The initial design parameters are obtained from the RA. In the next step, the initial design parameters are optimized by a fast and accurate surrogate-assisted optimization model. Using the optimized design parameters, the final design of the antenna is simulated using a computer simulation tool. The prototype of the antenna is fabricated on a Roger substrate (substrate height ‘h’ = 0.8 mm) with a dielectric constant of 3. The manufactured prototype with the size of 31 × 18 mm2 is experimentally evaluated and validated using vector network analyser and anechoic chamber. The proposed MIMO antenna provides extended ultra-wide impedance bandwidth of 3–25 GHz (fractional bandwidth 157%), enhanced isolation S21 ≤ − 27 dB envelope correlation coefficient (ECC = 0.002), good pattern diversity, and constant group delay. Finally, the obtained results are compared with the existing literature. |
| first_indexed | 2024-10-01T02:20:53Z |
| format | Journal Article |
| id | ntu-10356/150232 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:20:53Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1502322021-06-04T04:25:36Z Computationally optimized MIMO antenna with improved isolation and extended bandwidth for UWB applications Sharma, Madan Kumar Kumar, Mithilesh Saini, J. P. Singh, Satya P. School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering Multiple-input-multiple-output Surrogate Optimization Isolation and bandwidth are the two important performance parameters of the multiple-input-multiple-output (MIMO) antenna. A small footprint of an antenna with enhanced isolation and extended bandwidth is highly desirable for space-limited UWB applications. In this paper, we present a compact and computationally optimized MIMO antenna for UWB applications. The proposed antenna consists of two micro-strip-fed semicircular radiating elements. The inverted prism-shaped ground stub is used to enhance isolation. A truncated-shaped partial ground plane with two ground slots is used for impedance matching over the extended UWB. The circular monopole radiating elements of the reference antenna (RA) are converted into semicircular radiating elements for efficient utilization of the available space. The initial design parameters are obtained from the RA. In the next step, the initial design parameters are optimized by a fast and accurate surrogate-assisted optimization model. Using the optimized design parameters, the final design of the antenna is simulated using a computer simulation tool. The prototype of the antenna is fabricated on a Roger substrate (substrate height ‘h’ = 0.8 mm) with a dielectric constant of 3. The manufactured prototype with the size of 31 × 18 mm2 is experimentally evaluated and validated using vector network analyser and anechoic chamber. The proposed MIMO antenna provides extended ultra-wide impedance bandwidth of 3–25 GHz (fractional bandwidth 157%), enhanced isolation S21 ≤ − 27 dB envelope correlation coefficient (ECC = 0.002), good pattern diversity, and constant group delay. Finally, the obtained results are compared with the existing literature. 2021-06-04T04:25:36Z 2021-06-04T04:25:36Z 2020 Journal Article Sharma, M. K., Kumar, M., Saini, J. P. & Singh, S. P. (2020). Computationally optimized MIMO antenna with improved isolation and extended bandwidth for UWB applications. Arabian Journal for Science and Engineering, 45(3), 1333-1343. https://dx.doi.org/10.1007/s13369-019-03888-6 2193-567X 0000-0003-3159-3622 https://hdl.handle.net/10356/150232 10.1007/s13369-019-03888-6 2-s2.0-85065299505 3 45 1333 1343 en Arabian Journal for Science and Engineering © 2019 King Fahd University of Petroleum and Minerals. All rights reserved. |
| spellingShingle | Engineering::Electrical and electronic engineering Multiple-input-multiple-output Surrogate Optimization Sharma, Madan Kumar Kumar, Mithilesh Saini, J. P. Singh, Satya P. Computationally optimized MIMO antenna with improved isolation and extended bandwidth for UWB applications |
| title | Computationally optimized MIMO antenna with improved isolation and extended bandwidth for UWB applications |
| title_full | Computationally optimized MIMO antenna with improved isolation and extended bandwidth for UWB applications |
| title_fullStr | Computationally optimized MIMO antenna with improved isolation and extended bandwidth for UWB applications |
| title_full_unstemmed | Computationally optimized MIMO antenna with improved isolation and extended bandwidth for UWB applications |
| title_short | Computationally optimized MIMO antenna with improved isolation and extended bandwidth for UWB applications |
| title_sort | computationally optimized mimo antenna with improved isolation and extended bandwidth for uwb applications |
| topic | Engineering::Electrical and electronic engineering Multiple-input-multiple-output Surrogate Optimization |
| url | https://hdl.handle.net/10356/150232 |
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