A Low-Profile High-Gain and Wideband Log-Periodic Meandered Dipole Array Antenna with a Cascaded Multi-Section Artificial Magnetic Conductor Structure
This paper presents a low-profile log-periodic meandered dipole array (LPMDA) antenna with wideband and high gain characteristics. The antenna consists of 14 dipole elements. For compactness, a meander line structure is applied to each dipole element to reduce its physical length. As a result, a com...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-10-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/19/20/4404 |
| _version_ | 1811186477090996224 |
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| author | Son Trinh-Van Oh Heon Kwon Euntae Jung Jinwoo Park Byunggil Yu Kichul Kim Jongwoo Seo Keum Cheol Hwang |
| author_facet | Son Trinh-Van Oh Heon Kwon Euntae Jung Jinwoo Park Byunggil Yu Kichul Kim Jongwoo Seo Keum Cheol Hwang |
| author_sort | Son Trinh-Van |
| collection | DOAJ |
| description | This paper presents a low-profile log-periodic meandered dipole array (LPMDA) antenna with wideband and high gain characteristics. The antenna consists of 14 dipole elements. For compactness, a meander line structure is applied to each dipole element to reduce its physical length. As a result, a compact and wideband LPMDA antenna is realized, exhibiting a wide impedance bandwidth of 1.04−5.22 GHz (ratio bandwidth of 5.02:1) for |<inline-formula><math display="inline"> <semantics> <msub> <mi>S</mi> <mn>11</mn></msub></semantics></math></inline-formula>| < −10 dB. To enhance the antenna gain performance while maintaining the wideband behavior, the LPMDA antenna is integrated with a new design of an artificial magnetic conductor (AMC) structure. The designed AMC is realized by combining three AMC structures of different sizes to form a cascaded multi-section AMC structure, of which its overall operating bandwidth can continuously cover the entire impedance bandwidth of the LPMDA antenna. The proposed AMC-backed LPMDA antenna is experimentally verified and its measured −10 dB reflection bandwidth is found to be in the range of 0.84−5.15 GHz (6.13:1). At the main beam direction within the operating frequency bandwidth, the gain of the proposed AMC-backed LPMDA antenna ranges from 7.15−11.43 dBi, which is approximately 4 dBi higher than that of an LPMDA antenna without an AMC. Moreover, the proposed antenna has a low profile of only 0.138<inline-formula> <math display="inline"> <semantics> <msub> <mi>λ</mi> <mi>L</mi></msub></semantics></math></inline-formula>. (<inline-formula><math display="inline"> <semantics> <msub> <mi>λ</mi> <mi>L</mi> </msub> </semantics> </math> </inline-formula> is the free-space wavelength at the lowest operating frequency). |
| first_indexed | 2024-04-11T13:46:07Z |
| format | Article |
| id | doaj.art-50e2a620d5be47e0ab52c37ce65a01e4 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T13:46:07Z |
| publishDate | 2019-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-50e2a620d5be47e0ab52c37ce65a01e42022-12-22T04:21:03ZengMDPI AGSensors1424-82202019-10-011920440410.3390/s19204404s19204404A Low-Profile High-Gain and Wideband Log-Periodic Meandered Dipole Array Antenna with a Cascaded Multi-Section Artificial Magnetic Conductor StructureSon Trinh-Van0Oh Heon Kwon1Euntae Jung2Jinwoo Park3Byunggil Yu4Kichul Kim5Jongwoo Seo6Keum Cheol Hwang7Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 440-746, KoreaDepartment of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 440-746, KoreaTactical Communication Team, Hanwha Systems, Seongnam 13524, KoreaTactical Communication Team, Hanwha Systems, Seongnam 13524, KoreaTactical Communication Team, Hanwha Systems, Seongnam 13524, Korea2nd R&D Institute − 1st Directorate, Agency for Defense Development, Daejeon 34186, Korea2nd R&D Institute − 1st Directorate, Agency for Defense Development, Daejeon 34186, KoreaDepartment of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 440-746, KoreaThis paper presents a low-profile log-periodic meandered dipole array (LPMDA) antenna with wideband and high gain characteristics. The antenna consists of 14 dipole elements. For compactness, a meander line structure is applied to each dipole element to reduce its physical length. As a result, a compact and wideband LPMDA antenna is realized, exhibiting a wide impedance bandwidth of 1.04−5.22 GHz (ratio bandwidth of 5.02:1) for |<inline-formula><math display="inline"> <semantics> <msub> <mi>S</mi> <mn>11</mn></msub></semantics></math></inline-formula>| < −10 dB. To enhance the antenna gain performance while maintaining the wideband behavior, the LPMDA antenna is integrated with a new design of an artificial magnetic conductor (AMC) structure. The designed AMC is realized by combining three AMC structures of different sizes to form a cascaded multi-section AMC structure, of which its overall operating bandwidth can continuously cover the entire impedance bandwidth of the LPMDA antenna. The proposed AMC-backed LPMDA antenna is experimentally verified and its measured −10 dB reflection bandwidth is found to be in the range of 0.84−5.15 GHz (6.13:1). At the main beam direction within the operating frequency bandwidth, the gain of the proposed AMC-backed LPMDA antenna ranges from 7.15−11.43 dBi, which is approximately 4 dBi higher than that of an LPMDA antenna without an AMC. Moreover, the proposed antenna has a low profile of only 0.138<inline-formula> <math display="inline"> <semantics> <msub> <mi>λ</mi> <mi>L</mi></msub></semantics></math></inline-formula>. (<inline-formula><math display="inline"> <semantics> <msub> <mi>λ</mi> <mi>L</mi> </msub> </semantics> </math> </inline-formula> is the free-space wavelength at the lowest operating frequency).https://www.mdpi.com/1424-8220/19/20/4404artificial magnetic conductorlog-periodic dipole array (lpda)low-profilemeandered dipole antennawideband |
| spellingShingle | Son Trinh-Van Oh Heon Kwon Euntae Jung Jinwoo Park Byunggil Yu Kichul Kim Jongwoo Seo Keum Cheol Hwang A Low-Profile High-Gain and Wideband Log-Periodic Meandered Dipole Array Antenna with a Cascaded Multi-Section Artificial Magnetic Conductor Structure Sensors artificial magnetic conductor log-periodic dipole array (lpda) low-profile meandered dipole antenna wideband |
| title | A Low-Profile High-Gain and Wideband Log-Periodic Meandered Dipole Array Antenna with a Cascaded Multi-Section Artificial Magnetic Conductor Structure |
| title_full | A Low-Profile High-Gain and Wideband Log-Periodic Meandered Dipole Array Antenna with a Cascaded Multi-Section Artificial Magnetic Conductor Structure |
| title_fullStr | A Low-Profile High-Gain and Wideband Log-Periodic Meandered Dipole Array Antenna with a Cascaded Multi-Section Artificial Magnetic Conductor Structure |
| title_full_unstemmed | A Low-Profile High-Gain and Wideband Log-Periodic Meandered Dipole Array Antenna with a Cascaded Multi-Section Artificial Magnetic Conductor Structure |
| title_short | A Low-Profile High-Gain and Wideband Log-Periodic Meandered Dipole Array Antenna with a Cascaded Multi-Section Artificial Magnetic Conductor Structure |
| title_sort | low profile high gain and wideband log periodic meandered dipole array antenna with a cascaded multi section artificial magnetic conductor structure |
| topic | artificial magnetic conductor log-periodic dipole array (lpda) low-profile meandered dipole antenna wideband |
| url | https://www.mdpi.com/1424-8220/19/20/4404 |
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