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A Hybrid Efficient Iterative ACA-PO and Chebyshev Approximation Technique for Fast Radiation Analysis Over a Broad Frequency Band.

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Title: A Hybrid Efficient Iterative ACA-PO and Chebyshev Approximation Technique for Fast Radiation Analysis Over a Broad Frequency Band.
Authors: Wu, Junjun1 wu18792802634@outlook.com
Source: Applied Computational Electromagnetics Society Journal. Feb2026, Vol. 41 Issue 2, p137-143. 7p.
Subjects: Chebyshev approximation, Physical optics, Approximation error, Boundary element methods, Electromagnetic radiation, Iterative methods (Mathematics)
Abstract: In this paper, a novel approach integrated efficient iterative adaptive cross approximation-physical optics (EI-ACA-PO) and Chebyshev approximation technique (CAT) is proposed to efficiently calculate the broadband solution of antenna placed on electrically large platforms. The adaptive cross-approximation (ACA) method is employed to compress the self-impedance matrix of the Method of Moments (MoM) region, and the interaction matrices between the MoM and physical optics (PO) regions. By introducing CAT technology, the iterative hybrid method is capable of efficiently calculating the wideband results. First, the outer surface is divided into two regions. Then, the integral equation is solved by the EI-ACA-PO method to obtain the induced current at the Chebyshev nodes. Afterwards, the current in a desired frequency band is represented by the Chebyshev series. To improve accuracy, the Chebyshev series is matched with the Maehly approximation. The current at any frequency point in the bandwidth can be calculated. Finally, the broadband electromagnetic radiation characteristics can be obtained. [ABSTRACT FROM AUTHOR]
Copyright of Applied Computational Electromagnetics Society Journal is the property of River Publishers 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: A Hybrid Efficient Iterative ACA-PO and Chebyshev Approximation Technique for Fast Radiation Analysis Over a Broad Frequency Band.
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  Data: <searchLink fieldCode="AR" term="%22Wu%2C+Junjun%22">Wu, Junjun</searchLink><relatesTo>1</relatesTo><i> wu18792802634@outlook.com</i>
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  Data: <searchLink fieldCode="JN" term="%22Applied+Computational+Electromagnetics+Society+Journal%22">Applied Computational Electromagnetics Society Journal</searchLink>. Feb2026, Vol. 41 Issue 2, p137-143. 7p.
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  Data: <searchLink fieldCode="DE" term="%22Chebyshev+approximation%22">Chebyshev approximation</searchLink><br /><searchLink fieldCode="DE" term="%22Physical+optics%22">Physical optics</searchLink><br /><searchLink fieldCode="DE" term="%22Approximation+error%22">Approximation error</searchLink><br /><searchLink fieldCode="DE" term="%22Boundary+element+methods%22">Boundary element methods</searchLink><br /><searchLink fieldCode="DE" term="%22Electromagnetic+radiation%22">Electromagnetic radiation</searchLink><br /><searchLink fieldCode="DE" term="%22Iterative+methods+%28Mathematics%29%22">Iterative methods (Mathematics)</searchLink>
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  Label: Abstract
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  Data: In this paper, a novel approach integrated efficient iterative adaptive cross approximation-physical optics (EI-ACA-PO) and Chebyshev approximation technique (CAT) is proposed to efficiently calculate the broadband solution of antenna placed on electrically large platforms. The adaptive cross-approximation (ACA) method is employed to compress the self-impedance matrix of the Method of Moments (MoM) region, and the interaction matrices between the MoM and physical optics (PO) regions. By introducing CAT technology, the iterative hybrid method is capable of efficiently calculating the wideband results. First, the outer surface is divided into two regions. Then, the integral equation is solved by the EI-ACA-PO method to obtain the induced current at the Chebyshev nodes. Afterwards, the current in a desired frequency band is represented by the Chebyshev series. To improve accuracy, the Chebyshev series is matched with the Maehly approximation. The current at any frequency point in the bandwidth can be calculated. Finally, the broadband electromagnetic radiation characteristics can be obtained. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Applied Computational Electromagnetics Society Journal is the property of River Publishers 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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        Value: 10.13052/2026.ACES.J.410204
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      – Code: eng
        Text: English
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        PageCount: 7
        StartPage: 137
    Subjects:
      – SubjectFull: Chebyshev approximation
        Type: general
      – SubjectFull: Physical optics
        Type: general
      – SubjectFull: Approximation error
        Type: general
      – SubjectFull: Boundary element methods
        Type: general
      – SubjectFull: Electromagnetic radiation
        Type: general
      – SubjectFull: Iterative methods (Mathematics)
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      – TitleFull: A Hybrid Efficient Iterative ACA-PO and Chebyshev Approximation Technique for Fast Radiation Analysis Over a Broad Frequency Band.
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              Text: Feb2026
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              Y: 2026
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