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Low-Profile Metasurface Antenna for Broadband RCS Reduction and Omnidirectional Radiation.

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Title: Low-Profile Metasurface Antenna for Broadband RCS Reduction and Omnidirectional Radiation.
Authors: Hu, Liqiu1 (AUTHOR), Li, Sijia1 (AUTHOR) lsj051@126.com, Ji, Kefeng1 (AUTHOR), Wu, Yuhao1 (AUTHOR), Zhang, Zhiyun1 (AUTHOR)
Source: Materials (1996-1944). Jun2026, Vol. 19 Issue 12, p2542. 15p.
Subjects: Radar cross sections, Impedance matching, Antenna design, Radiation, Metamaterial antennas, Planar antennas
Abstract: A low-profile, low radar cross-section (RCS) omnidirectional metasurface antenna is investigated and proposed in this letter. The antenna consists of a top circular patch, a three-layer dielectric substrate, a full metal ground, a multi-layer polarization conversion metasurface, and four short vias for connecting the top patch to the ground. Wideband impedance matching is achieved by modifying an F-shaped feeding structure. The broadband RCS reduction is realized by loading the antenna with the polarization conversion metasurface (PCM) in an appropriate array configuration. The antenna prototype has been fabricated and measured in an anechoic chamber. Experimental results illuminated that the antenna features a low profile of 0.051λ0 (λ0 is the wavelength at 2.35 GHz) and a 10 dB impedance bandwidth of 2.11–2.62 GHz (a fractional bandwidth of 21.56%). Significantly broadband RCS reduction is achieved from 7.05 to 16.96 GHz, with a maximum reduction of –28 dB and an average reduction of –12.51 dB. [ABSTRACT FROM AUTHOR]
Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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Header DbId: egs
DbLabel: Engineering Source
An: 194907616
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PubTypeId: academicJournal
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  Label: Title
  Group: Ti
  Data: Low-Profile Metasurface Antenna for Broadband RCS Reduction and Omnidirectional Radiation.
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  Data: <searchLink fieldCode="AR" term="%22Hu%2C+Liqiu%22">Hu, Liqiu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Sijia%22">Li, Sijia</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> lsj051@126.com</i><br /><searchLink fieldCode="AR" term="%22Ji%2C+Kefeng%22">Ji, Kefeng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wu%2C+Yuhao%22">Wu, Yuhao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Zhiyun%22">Zhang, Zhiyun</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Materials+%281996-1944%29%22">Materials (1996-1944)</searchLink>. Jun2026, Vol. 19 Issue 12, p2542. 15p.
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  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Radar+cross+sections%22">Radar cross sections</searchLink><br /><searchLink fieldCode="DE" term="%22Impedance+matching%22">Impedance matching</searchLink><br /><searchLink fieldCode="DE" term="%22Antenna+design%22">Antenna design</searchLink><br /><searchLink fieldCode="DE" term="%22Radiation%22">Radiation</searchLink><br /><searchLink fieldCode="DE" term="%22Metamaterial+antennas%22">Metamaterial antennas</searchLink><br /><searchLink fieldCode="DE" term="%22Planar+antennas%22">Planar antennas</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: A low-profile, low radar cross-section (RCS) omnidirectional metasurface antenna is investigated and proposed in this letter. The antenna consists of a top circular patch, a three-layer dielectric substrate, a full metal ground, a multi-layer polarization conversion metasurface, and four short vias for connecting the top patch to the ground. Wideband impedance matching is achieved by modifying an F-shaped feeding structure. The broadband RCS reduction is realized by loading the antenna with the polarization conversion metasurface (PCM) in an appropriate array configuration. The antenna prototype has been fabricated and measured in an anechoic chamber. Experimental results illuminated that the antenna features a low profile of 0.051λ0 (λ0 is the wavelength at 2.35 GHz) and a 10 dB impedance bandwidth of 2.11–2.62 GHz (a fractional bandwidth of 21.56%). Significantly broadband RCS reduction is achieved from 7.05 to 16.96 GHz, with a maximum reduction of –28 dB and an average reduction of –12.51 dB. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.3390/ma19122542
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 15
        StartPage: 2542
    Subjects:
      – SubjectFull: Radar cross sections
        Type: general
      – SubjectFull: Impedance matching
        Type: general
      – SubjectFull: Antenna design
        Type: general
      – SubjectFull: Radiation
        Type: general
      – SubjectFull: Metamaterial antennas
        Type: general
      – SubjectFull: Planar antennas
        Type: general
    Titles:
      – TitleFull: Low-Profile Metasurface Antenna for Broadband RCS Reduction and Omnidirectional Radiation.
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            NameFull: Hu, Liqiu
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            NameFull: Li, Sijia
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            NameFull: Ji, Kefeng
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            NameFull: Wu, Yuhao
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            NameFull: Zhang, Zhiyun
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            – D: 15
              M: 06
              Text: Jun2026
              Type: published
              Y: 2026
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              Value: 19961944
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              Value: 19
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              Value: 12
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            – TitleFull: Materials (1996-1944)
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