Analysis of the radiation from aparture/printed antennas in the presence of periodic structures through numerical and asymptotic techniques

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2010

Author

Manara, Giuliano
Aydın Çivi, Hatice Özlem
Nepa, Paolo
Çetin, Ramazan

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Proje kapsamında, yakınında saçıcıların bulunduğu elektriksel olarak büyük anten dizilerinin ışıma/saçınma problemini etkin bir şekilde analiz etmek için bir yöntem geliştirmek üzere çalışmalar yapılmıştır. Bu yöntem elektriksel olarak büyük dizilerin asimptotik ışın alan gösterimine ve dizi akımlarının Ayrık Fourier Dönüşüm ifadelerine dayanmaktadır. Gerçekçi anten dizilerinin üzerindeki akım dağılımının Ayrık Fourier Dönüşümünün, dizinin yakınında saçınmaya yol açabilecek nesneler olduğu durumda bile, belli bir bölgede yoğunlaşmış olduğu gösterilmiştir. Yakınında saçıcılar bulunan büyük anten dizilerinden ışıyan alanların, Kırınımın Birbiçimli Teorisi (Uniform Theory of Diffraction - UTD) tekniği kullanılarak analizi yapılmıştır. Akımların Ayrık Fourier Dönüşümünün bir bölgede yoğun olmasını ve büyük dizilerin UTD analizini kullanan etkin bir Momentler Yöntemi (MoM) algoritması önerilmiştir. Önerilen yöntem 2 boyutlu bir probleme uygulanmıştır: Yakınında sonsuz uzunlukta mükemmel iletken silindir olan sonsuz uzunluktaki akım elemanlarından oluşan doğrusal diziden ışıma problemi. Yöntemin doğruluğu ve etkinliği sayısal örnekler üzerinden tartışılmıştır. Saygın konferanslarda iki bildiri sunulmuştur. Ayrıca, proje kapsamında bir Master tezi çalışması başlatılmıştır ve bu tez çalışması süreci hala sürmektedir.

Subject Keywords

Mühendislik, Elektrik ve Elektronik

URI

https://app.trdizin.gov.tr/publication/project/detail/T1RjeE9Uaz0
https://hdl.handle.net/11511/50369

Collections

Department of Electrical and Electronics Engineering, Project and Design

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Citation Formats

G. Manara, H. Ö. Aydın Çivi, P. Nepa, and R. Çetin, “Analysis of the radiation from aparture/printed antennas in the presence of periodic structures through numerical and asymptotic techniques,” 2010. Accessed: 00, 2020. [Online]. Available: https://app.trdizin.gov.tr/publication/project/detail/T1RjeE9Uaz0.