Novel Beam Scan Method of Fabry–Perot Cavity (FPC) Antennas
A new beam scanning method of a Fabry–Perot cavity (FPC) antenna is proposed. To obtain high gain in a target direction with a reduced sidelobe level (SLL), we devised a tapered partially reflective surface (PRS) as a superstrate. Moreover, to attain various beam scanning directions, a phase-control...
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MDPI AG
2021-11-01
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Online Access: | https://www.mdpi.com/2076-3417/11/22/11005 |
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author | Wook Jang Yeong-geun Jeon Han-jun Maeng Jongyeong Kim Dongho Kim |
author_facet | Wook Jang Yeong-geun Jeon Han-jun Maeng Jongyeong Kim Dongho Kim |
author_sort | Wook Jang |
collection | DOAJ |
description | A new beam scanning method of a Fabry–Perot cavity (FPC) antenna is proposed. To obtain high gain in a target direction with a reduced sidelobe level (SLL), we devised a tapered partially reflective surface (PRS) as a superstrate. Moreover, to attain various beam scanning directions, a phase-controllable artificial magnetic conductor (AMC) ground plane with a broad reflection phase range and high reflection magnitudes was introduced. In the proposed method, a new formula to satisfy an FP resonance condition in a cavity for a scanned beam is also suggested. According to the formula, the FPC antenna can precisely scan the main beam in designed target directions with well-maintained high gain, which has been hardly achievable. In addition, our method demonstrates the potential of electrical beam-scanning antennas by employing active RF chips on the AMC cells. To validate the method, we fabricated a prototype FPC antenna for a scanned beam at <i>θ</i> = 30°. Furthermore, we conducted an additional simulation for a different beam scanning angle as well. Good agreement between the expected and experimental results verifies our design approach. |
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issn | 2076-3417 |
language | English |
last_indexed | 2024-03-10T05:42:54Z |
publishDate | 2021-11-01 |
publisher | MDPI AG |
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spelling | doaj.art-1419df4d3dee4ef79a639acb9eb663e02023-11-22T22:22:12ZengMDPI AGApplied Sciences2076-34172021-11-0111221100510.3390/app112211005Novel Beam Scan Method of Fabry–Perot Cavity (FPC) AntennasWook Jang0Yeong-geun Jeon1Han-jun Maeng2Jongyeong Kim3Dongho Kim4Department of Electrical Engineering, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 05006, KoreaDepartment of Electrical Engineering, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 05006, KoreaDepartment of Electrical Engineering, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 05006, KoreaThe Specific Radar Team, Hanwha Systems, 491-23, Gyeonggidong-ro, Namsa-myeon, Cheoin-gu, Yongin-si 17121, Gyeonggi-do, KoreaDepartment of Electrical Engineering, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 05006, KoreaA new beam scanning method of a Fabry–Perot cavity (FPC) antenna is proposed. To obtain high gain in a target direction with a reduced sidelobe level (SLL), we devised a tapered partially reflective surface (PRS) as a superstrate. Moreover, to attain various beam scanning directions, a phase-controllable artificial magnetic conductor (AMC) ground plane with a broad reflection phase range and high reflection magnitudes was introduced. In the proposed method, a new formula to satisfy an FP resonance condition in a cavity for a scanned beam is also suggested. According to the formula, the FPC antenna can precisely scan the main beam in designed target directions with well-maintained high gain, which has been hardly achievable. In addition, our method demonstrates the potential of electrical beam-scanning antennas by employing active RF chips on the AMC cells. To validate the method, we fabricated a prototype FPC antenna for a scanned beam at <i>θ</i> = 30°. Furthermore, we conducted an additional simulation for a different beam scanning angle as well. Good agreement between the expected and experimental results verifies our design approach.https://www.mdpi.com/2076-3417/11/22/11005Fabry–Perot cavity (FPC) antennaartificial magnetic conductor (AMC)partially reflective surface (PRS)beamforminghigh gainbeam scanning |
spellingShingle | Wook Jang Yeong-geun Jeon Han-jun Maeng Jongyeong Kim Dongho Kim Novel Beam Scan Method of Fabry–Perot Cavity (FPC) Antennas Applied Sciences Fabry–Perot cavity (FPC) antenna artificial magnetic conductor (AMC) partially reflective surface (PRS) beamforming high gain beam scanning |
title | Novel Beam Scan Method of Fabry–Perot Cavity (FPC) Antennas |
title_full | Novel Beam Scan Method of Fabry–Perot Cavity (FPC) Antennas |
title_fullStr | Novel Beam Scan Method of Fabry–Perot Cavity (FPC) Antennas |
title_full_unstemmed | Novel Beam Scan Method of Fabry–Perot Cavity (FPC) Antennas |
title_short | Novel Beam Scan Method of Fabry–Perot Cavity (FPC) Antennas |
title_sort | novel beam scan method of fabry perot cavity fpc antennas |
topic | Fabry–Perot cavity (FPC) antenna artificial magnetic conductor (AMC) partially reflective surface (PRS) beamforming high gain beam scanning |
url | https://www.mdpi.com/2076-3417/11/22/11005 |
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