Ultra-Compact Reconfigurable Band Reject UWB MIMO Antenna with Four Radiators
A compact reconfigurable UWB MIMO antenna with four radiators that accomplish on-demand band rejection from 4.9 to 6.3 GHz is presented. An LC stub is connected to the ground plane by activating the PIN diode for each radiator. Two radiators are placed perpendicular to each other to exploit the pola...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-03-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/9/4/584 |
| _version_ | 1797571855597436928 |
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| author | Muhammad Saeed Khan Adnan Iftikhar Raed M. Shubair Antonio-Daniele Capobianco Sajid Mehmood Asif Benjamin D. Braaten Dimitris E. Anagnostou |
| author_facet | Muhammad Saeed Khan Adnan Iftikhar Raed M. Shubair Antonio-Daniele Capobianco Sajid Mehmood Asif Benjamin D. Braaten Dimitris E. Anagnostou |
| author_sort | Muhammad Saeed Khan |
| collection | DOAJ |
| description | A compact reconfigurable UWB MIMO antenna with four radiators that accomplish on-demand band rejection from 4.9 to 6.3 GHz is presented. An LC stub is connected to the ground plane by activating the PIN diode for each radiator. Two radiators are placed perpendicular to each other to exploit the polarization diversity on a compact 25 × 50 mm<inline-formula> <math display="inline"> <semantics> <msup> <mrow></mrow> <mn>2</mn> </msup> </semantics> </math> </inline-formula> FR4 laminate. Two additional radiators are then fixed obliquely on the same laminate (without increasing size) in angular configuration at ±45<inline-formula> <math display="inline"> <semantics> <msup> <mrow></mrow> <mo>∘</mo> </msup> </semantics> </math> </inline-formula> perpendicular to the first two planar radiators still exploiting polarization diversity. The design is validated by prototyping and comparing the results with the simulated ones. On demand band rejection through the use of PIN diodes, wide impedance matching (2–12 GHz), high isolation amongst the radiators, compactness achieved by angular placement of the radiators, low gain variation over the entire bandwidth, band rejection control achieved by adjusting the gap between stub and ground plane, and low TARC values makes the proposed design very suitable for commercial handheld devices (i.e., Huawei E5785 and Netgear 815S housings). The proposed configuration of the UWB MIMO radiators has been investigated first time as per authors’ knowledge. |
| first_indexed | 2024-03-10T20:47:37Z |
| format | Article |
| id | doaj.art-22da135adbb84f2e8b242d5303aef579 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-10T20:47:37Z |
| publishDate | 2020-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-22da135adbb84f2e8b242d5303aef5792023-11-19T20:12:06ZengMDPI AGElectronics2079-92922020-03-019458410.3390/electronics9040584Ultra-Compact Reconfigurable Band Reject UWB MIMO Antenna with Four RadiatorsMuhammad Saeed Khan0Adnan Iftikhar1Raed M. Shubair2Antonio-Daniele Capobianco3Sajid Mehmood Asif4Benjamin D. Braaten5Dimitris E. Anagnostou6Department Electrical and Computer Engineering, COMSATS University Islamabad, Islamabad 45550, PakistanDepartment Electrical and Computer Engineering, COMSATS University Islamabad, Islamabad 45550, PakistanResearch Laboratory of Electronics, Massachusetts Institute of Technology (MIT), Cambridge, MA 02139, USADepartment of Information Engineering, University of Padova, Via Gradenigo 6/b, 35131 Padova, ItalyElectronic and Electrical Engineering, The University of Sheffield, Sheffield S1 4ET, UKDepartment of Electrical and Computer Engineering, North Dakota State University, Fargo, ND 58102, USADepartment of Electrical Engineering, Heriot-Watt University, Edinburgh EH14 4AS, UKA compact reconfigurable UWB MIMO antenna with four radiators that accomplish on-demand band rejection from 4.9 to 6.3 GHz is presented. An LC stub is connected to the ground plane by activating the PIN diode for each radiator. Two radiators are placed perpendicular to each other to exploit the polarization diversity on a compact 25 × 50 mm<inline-formula> <math display="inline"> <semantics> <msup> <mrow></mrow> <mn>2</mn> </msup> </semantics> </math> </inline-formula> FR4 laminate. Two additional radiators are then fixed obliquely on the same laminate (without increasing size) in angular configuration at ±45<inline-formula> <math display="inline"> <semantics> <msup> <mrow></mrow> <mo>∘</mo> </msup> </semantics> </math> </inline-formula> perpendicular to the first two planar radiators still exploiting polarization diversity. The design is validated by prototyping and comparing the results with the simulated ones. On demand band rejection through the use of PIN diodes, wide impedance matching (2–12 GHz), high isolation amongst the radiators, compactness achieved by angular placement of the radiators, low gain variation over the entire bandwidth, band rejection control achieved by adjusting the gap between stub and ground plane, and low TARC values makes the proposed design very suitable for commercial handheld devices (i.e., Huawei E5785 and Netgear 815S housings). The proposed configuration of the UWB MIMO radiators has been investigated first time as per authors’ knowledge.https://www.mdpi.com/2079-9292/9/4/584band rejectedenvelope correlation co-efficientfour element MIMOpolarization diversityultra-wideband multiple input multiple output |
| spellingShingle | Muhammad Saeed Khan Adnan Iftikhar Raed M. Shubair Antonio-Daniele Capobianco Sajid Mehmood Asif Benjamin D. Braaten Dimitris E. Anagnostou Ultra-Compact Reconfigurable Band Reject UWB MIMO Antenna with Four Radiators Electronics band rejected envelope correlation co-efficient four element MIMO polarization diversity ultra-wideband multiple input multiple output |
| title | Ultra-Compact Reconfigurable Band Reject UWB MIMO Antenna with Four Radiators |
| title_full | Ultra-Compact Reconfigurable Band Reject UWB MIMO Antenna with Four Radiators |
| title_fullStr | Ultra-Compact Reconfigurable Band Reject UWB MIMO Antenna with Four Radiators |
| title_full_unstemmed | Ultra-Compact Reconfigurable Band Reject UWB MIMO Antenna with Four Radiators |
| title_short | Ultra-Compact Reconfigurable Band Reject UWB MIMO Antenna with Four Radiators |
| title_sort | ultra compact reconfigurable band reject uwb mimo antenna with four radiators |
| topic | band rejected envelope correlation co-efficient four element MIMO polarization diversity ultra-wideband multiple input multiple output |
| url | https://www.mdpi.com/2079-9292/9/4/584 |
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