The Effect of the Wall Thickness of the Material Loaded Cavity On the RCS Reduction

Yıl 2024, , 2330 - 2348, 23.10.2024

Oğuzhan Demiryürek , Filiz Birbir Ünal

https://doi.org/10.29130/dubited.1527024

Öz

In this paper, the effect of a parallel plate waveguide's wall thickness on radar cross-section reduction (RCS) is rigorously analyzed for H-polarization by using the Wiener-Hopf Technique, when the waveguide region is loaded with dielectric material and terminated with a perfect electric conductor (PEC) plate. Transfer matrices are incorporated into the analysis to account for the effect of different material layers through continuity relations. The Fourier transforms of the diffracted field and the boundary conditions yield a modified scalar Wiener-Hopf equation of the second kind (MWHE-2). The classical procedure to solve the MWHE-2 is applied and the approximate expression of the diffracted far field is obtained. Numerical results are given by comparing with the results available in the literature for the case of the wall thickness of the cavity not being considered.

Anahtar Kelimeler

RCS reduction, Wiener-Hopf Technique, Wall thickness of waveguide cavities

Dielektrik Malzeme Yüklü Paralel Plaka Dalga Kılavuzu Duvar Kalınlığının RCS Azaltılmasına Etkisi

Öz

Bu çalışmada, paralel plaka dalga kılavuzunun duvar kalınlığının radar kesit alanının azalmasına (RCS) etkisi, dalga kılavuzu bölgesi dielektrik malzeme ile yüklendiğinde ve mükemmel iletken (PEC) bir levha ile sonlandırıldığında H-polarizasyonu için Wiener-Hopf Tekniği kullanılarak titizlikle analiz edilmiştir. Süreklilik bağıntıları kullanılırken, farklı malzeme katmanlarının etkisini hesaba katmak için transfer matrisleri analize dahil edilir. Kırınan alanın Fourier dönüşümünün ve sınır koşullarının kullanılması, ikinci türden değiştirilmiş bir skaler Wiener-Hopf denklemini (MWHE-2) verir. MWHE-2'yi çözmek için klasik prosedür uygulanır ve kırınıma uğrayan uzak alanın yaklaşık ifadesi elde edilir. Sayısal sonuçlar, literatürde mevcut olan paralel plaka dalga kılavuzunun duvar kalınlığının dikkate alınmadığı durumdaki sonuçlarla karşılaştırılarak verilmiştir.

Anahtar Kelimeler

Radar kesit alanı azaltma, Wiener-Hopf Tekniği, Dalga kılavuzunun duvar kalınlığı

Kaynakça

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