Air and Metal Vias Combined Metamaterial-Based Lens for Radiation Performance Enhancement of Short-Pulse Tapered Slot Antenna
A post-wall-structured tapered slot antenna (PWTSA) loaded with an embedded metamaterial-based lens (metalens) is proposed and investigated for short-pulse applications. The proposed embedded metalens consists of not only a metallic delay lens, but also an airy acceleration region surrounding the le...
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MDPI AG
2021
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oai:doaj.org-article:7027d7ef62204b2e8152b870416272192021-11-25T17:25:16ZAir and Metal Vias Combined Metamaterial-Based Lens for Radiation Performance Enhancement of Short-Pulse Tapered Slot Antenna10.3390/electronics102228452079-9292https://doaj.org/article/7027d7ef62204b2e8152b870416272192021-11-01T00:00:00Zhttps://www.mdpi.com/2079-9292/10/22/2845https://doaj.org/toc/2079-9292A post-wall-structured tapered slot antenna (PWTSA) loaded with an embedded metamaterial-based lens (metalens) is proposed and investigated for short-pulse applications. The proposed embedded metalens consists of not only a metallic delay lens, but also an airy acceleration region surrounding the lens, which is different from the conventional metalenses used in various tapered slot antennas and can exhibit a small equivalent permittivity. Therefore, the embedded metalens has a large usable range of permittivity and does not increase the size of the original prototype PWTSA. The post-wall structure and metalens of the proposed antenna can help it achieve a comprehensive and balanced performance, including a high fidelity, low cross-polarization, stable main-lobe direction and gain enhancement. The simulated and measured results show that without any increase in antenna size, the proposed antenna enhances the realized gain by 6.4 dB over the frequency range from 9 to 26 GHz and achieves a stable radiation with the offset of the main-lobe direction being confined to 2° up to 24.9 GHz. Furthermore, the cross-polarization levels are less than −20 dB and the fidelity is kept high for the short-pulse radiation with the frequency spectrum up to 30 GHz.Yifan YinQiuyi ZhangShunli LiMDPI AGarticlegain enhancementmetamaterial-based lenspost-wall structurestable radiationtapered slot antennaElectronicsTK7800-8360ENElectronics, Vol 10, Iss 2845, p 2845 (2021) |
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DOAJ |
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gain enhancement metamaterial-based lens post-wall structure stable radiation tapered slot antenna Electronics TK7800-8360 |
| spellingShingle |
gain enhancement metamaterial-based lens post-wall structure stable radiation tapered slot antenna Electronics TK7800-8360 Yifan Yin Qiuyi Zhang Shunli Li Air and Metal Vias Combined Metamaterial-Based Lens for Radiation Performance Enhancement of Short-Pulse Tapered Slot Antenna |
| description |
A post-wall-structured tapered slot antenna (PWTSA) loaded with an embedded metamaterial-based lens (metalens) is proposed and investigated for short-pulse applications. The proposed embedded metalens consists of not only a metallic delay lens, but also an airy acceleration region surrounding the lens, which is different from the conventional metalenses used in various tapered slot antennas and can exhibit a small equivalent permittivity. Therefore, the embedded metalens has a large usable range of permittivity and does not increase the size of the original prototype PWTSA. The post-wall structure and metalens of the proposed antenna can help it achieve a comprehensive and balanced performance, including a high fidelity, low cross-polarization, stable main-lobe direction and gain enhancement. The simulated and measured results show that without any increase in antenna size, the proposed antenna enhances the realized gain by 6.4 dB over the frequency range from 9 to 26 GHz and achieves a stable radiation with the offset of the main-lobe direction being confined to 2° up to 24.9 GHz. Furthermore, the cross-polarization levels are less than −20 dB and the fidelity is kept high for the short-pulse radiation with the frequency spectrum up to 30 GHz. |
| format |
article |
| author |
Yifan Yin Qiuyi Zhang Shunli Li |
| author_facet |
Yifan Yin Qiuyi Zhang Shunli Li |
| author_sort |
Yifan Yin |
| title |
Air and Metal Vias Combined Metamaterial-Based Lens for Radiation Performance Enhancement of Short-Pulse Tapered Slot Antenna |
| title_short |
Air and Metal Vias Combined Metamaterial-Based Lens for Radiation Performance Enhancement of Short-Pulse Tapered Slot Antenna |
| title_full |
Air and Metal Vias Combined Metamaterial-Based Lens for Radiation Performance Enhancement of Short-Pulse Tapered Slot Antenna |
| title_fullStr |
Air and Metal Vias Combined Metamaterial-Based Lens for Radiation Performance Enhancement of Short-Pulse Tapered Slot Antenna |
| title_full_unstemmed |
Air and Metal Vias Combined Metamaterial-Based Lens for Radiation Performance Enhancement of Short-Pulse Tapered Slot Antenna |
| title_sort |
air and metal vias combined metamaterial-based lens for radiation performance enhancement of short-pulse tapered slot antenna |
| publisher |
MDPI AG |
| publishDate |
2021 |
| url |
https://doaj.org/article/7027d7ef62204b2e8152b87041627219 |
| work_keys_str_mv |
AT yifanyin airandmetalviascombinedmetamaterialbasedlensforradiationperformanceenhancementofshortpulsetaperedslotantenna AT qiuyizhang airandmetalviascombinedmetamaterialbasedlensforradiationperformanceenhancementofshortpulsetaperedslotantenna AT shunlili airandmetalviascombinedmetamaterialbasedlensforradiationperformanceenhancementofshortpulsetaperedslotantenna |
| _version_ |
1718412355703930880 |