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Superstrate-Based Low Observable Cavity-Backed Archimedean Spiral Antenna (2-18 GHz) for Electronic Warfare Applications.

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Title: Superstrate-Based Low Observable Cavity-Backed Archimedean Spiral Antenna (2-18 GHz) for Electronic Warfare Applications.
Authors: Prasad, Christy A.1, Manoj, Abhina A.1, Baghel, Shrikrishan1, Venu, Konidala S.1, Joy, Vineetha1 vineethajoy@nal.res.in, Singh, Hema1
Source: Progress in Electromagnetics Research C. 2026, Vol. 165, p267-275. 9p.
Subjects: Radar cross sections, Spiral antennas, Circular polarization, Surface coatings, Military electronics, Antennas (Electronics), Ultra-wideband antennas
Abstract: A superstrate comprising a dielectric and metasurface pattern, placed at an optimum height from the antenna surface, can facilitate radar cross section (RCS) reduction of the antenna. An optimally designed superstrate will not degrade the radiation performance of the antenna. In this paper, a novel design of low RCS superstrate-based right-handed circularly polarized (RHCP) cavity-backed Archimedean spiral (CBAS) antenna has been presented. The superstrate consists of a resistive sheet-based metasurface pattern on the top layer and a metallic pattern on the bottom surface of a dielectric substrate. It is shown that the proposed thin (0.82 mm) superstrate placed at an optimal height of 19.2 mm from the antenna surface resulted in the RCS reduction of 6-8 dBsm over the operating frequency range (2-18GHz), without any degradation in VSWR (< 2.1), gain (> 3dBi), and axial ratio (< 3dB). Such a low observable, cost-effective, and efficient spiral antenna without any payload constraints can be a preferred choice for electronic warfare applications in aerospace platforms. [ABSTRACT FROM AUTHOR]
Copyright of Progress in Electromagnetics Research C is the property of Electromagnetics Academy 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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  Data: Superstrate-Based Low Observable Cavity-Backed Archimedean Spiral Antenna (2-18 GHz) for Electronic Warfare Applications.
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  Data: &lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Prasad%2C+Christy+A%2E%22&quot;&gt;Prasad, Christy A.&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Manoj%2C+Abhina+A%2E%22&quot;&gt;Manoj, Abhina A.&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Baghel%2C+Shrikrishan%22&quot;&gt;Baghel, Shrikrishan&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Venu%2C+Konidala+S%2E%22&quot;&gt;Venu, Konidala S.&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Joy%2C+Vineetha%22&quot;&gt;Joy, Vineetha&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt;&lt;i&gt; vineethajoy@nal.res.in&lt;/i&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Singh%2C+Hema%22&quot;&gt;Singh, Hema&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt;
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  Data: &lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Radar+cross+sections%22&quot;&gt;Radar cross sections&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Spiral+antennas%22&quot;&gt;Spiral antennas&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Circular+polarization%22&quot;&gt;Circular polarization&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Surface+coatings%22&quot;&gt;Surface coatings&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Military+electronics%22&quot;&gt;Military electronics&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Antennas+%28Electronics%29%22&quot;&gt;Antennas (Electronics)&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Ultra-wideband+antennas%22&quot;&gt;Ultra-wideband antennas&lt;/searchLink&gt;
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  Label: Abstract
  Group: Ab
  Data: A superstrate comprising a dielectric and metasurface pattern, placed at an optimum height from the antenna surface, can facilitate radar cross section (RCS) reduction of the antenna. An optimally designed superstrate will not degrade the radiation performance of the antenna. In this paper, a novel design of low RCS superstrate-based right-handed circularly polarized (RHCP) cavity-backed Archimedean spiral (CBAS) antenna has been presented. The superstrate consists of a resistive sheet-based metasurface pattern on the top layer and a metallic pattern on the bottom surface of a dielectric substrate. It is shown that the proposed thin (0.82 mm) superstrate placed at an optimal height of 19.2 mm from the antenna surface resulted in the RCS reduction of 6-8 dBsm over the operating frequency range (2-18GHz), without any degradation in VSWR (&lt; 2.1), gain (&gt; 3dBi), and axial ratio (&lt; 3dB). Such a low observable, cost-effective, and efficient spiral antenna without any payload constraints can be a preferred choice for electronic warfare applications in aerospace platforms. [ABSTRACT FROM AUTHOR]
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  Data: &lt;i&gt;Copyright of Progress in Electromagnetics Research C is the property of Electromagnetics Academy and its content may not be copied or emailed to multiple sites without the copyright holder&#39;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.&lt;/i&gt; (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.2528/PIERC25073103
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 9
        StartPage: 267
    Subjects:
      – SubjectFull: Radar cross sections
        Type: general
      – SubjectFull: Spiral antennas
        Type: general
      – SubjectFull: Circular polarization
        Type: general
      – SubjectFull: Surface coatings
        Type: general
      – SubjectFull: Military electronics
        Type: general
      – SubjectFull: Antennas (Electronics)
        Type: general
      – SubjectFull: Ultra-wideband antennas
        Type: general
    Titles:
      – TitleFull: Superstrate-Based Low Observable Cavity-Backed Archimedean Spiral Antenna (2-18 GHz) for Electronic Warfare Applications.
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            NameFull: Prasad, Christy A.
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            NameFull: Manoj, Abhina A.
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            NameFull: Baghel, Shrikrishan
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            NameFull: Venu, Konidala S.
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            NameFull: Joy, Vineetha
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            – D: 01
              M: 03
              Text: 2026
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              Y: 2026
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              Value: 165
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            – TitleFull: Progress in Electromagnetics Research C
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