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ÇOK GENİŞ BANTLI MİKROŞERİT BANDGEÇİREN FİLTRE TASARIMINA YÖNELİK DİFERANSİYEL EVRİM ALGORİTMASI UYGULAMASI

DESIGN OPTIMIZATION OF ULTRA WIDE BAND MICROSTRIP FILTER WITH DIFFERENTIONAL EVOLUTION ALGORITHM

Journal Name:

  • Mugla Journal of Science and Technology

Publication Year:

  • 2017
DOI: 
10.22531/muglajsci.286267

Key Words:

Keywords (Original Language):

Author NameUniversity of Author
Abstract (2. Language): 
One of the most important circuit stages in microwave applications is microstrip filters. In this work, Differentionaly Evolution Algorithm (DEA) that is used intensively in engineering problems is taken to solve design optimization problem of an ultra-wide band microstrip transmission line. Basically DEA is similar to genetic algorithm however its unique structure makes it more simple and effective than other counterpart evolutionary algoirthms. For design optimization problem the width and length of the transmission lines of microstrip filter are taken as optimization variables. First the ABCD parameters of each line is obtained then the equivalent circuit ABCD parameter is converted to Scattering parameters which will be used in cost function. As a result, it is seen that DEA algorithm is an effective tool for design optimization of microstrip filters for ultra-wide band applications.
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Abstract (Original Language): 
Mikrodalga devre tasarımında mikroşerit filtreler önemli bir yer tutar. Bu çalışmada mühendislik problemlerinin çözümünde etkin olarak kullanılmaya başlanan diferansiyel evrim algoritması (DEA) yöntemi kullanılarak çok-geniş bantlı filtre tasarımı gerçekleştirilmiştir. Temel olarak genetik algoritma tekniğine benzer çalışma prensibine sahip olan diferansiyel evrim algoritması, diğer sezgisel algoritmalara oranla yapısal olarak daha basit olmasına karşın optimum değerlere ulaşmada daha kararlı bir yöntemdir. DEA optimum bir mikroşerit ultra-geniş bantlı filtre tasarımı için, mikroşerit iletim hatlarının kalınlık w ve uzunluğunun l tespiti için kullanılmıştır. Öncelikle mikroşerit iletim hat modeli seçilmiştir. Daha sonra ise, DEA bu hatlara ait optimum kalınlık ve uzunlukların tespiti için ayarlanmıştır. Algoritma maliyet fonksiyonu aday devrenin saçılma parametrelerinin frekans bandı boyunca incelenmesi ile elde edilmiştir ve optimum sonucu verecek parametreleri elde edecek şekilde ayarlanmıştır. Son olarak, diferansiyel evrim algoritması ile mikroşerit band geçiren filtre tasarımı yapılarak sonuçlar tablo ve grafikler ile verilmiştir.
FULL TEXT (PDF): 
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REFERENCES

References: 

This article was presented at the "Akıllı Sistemlerde Yenilikler
ve Uygulamaları - ASYU2016" conference as a full text paper.
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