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E ŞEKİLLİ KOMPAKT MİKROŞERİT ANTENLERİN REZONANS FREKANSININ HESAPLANMASI

COMPUTATION OF RESONANT FREQUENCY OF E-SHAPED COMPACT MICROSTRIP ANTENNAS

Journal Name:

  • Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

Publication Year:

  • 2012

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
In this study, a new and simple method based on the effective length expression to calculate the resonant frequency of E-shaped compact microstrip antennas (ECMAs) is presented. For this purpose, the resonant frequencies of 144 ECMAs having different dimensions and electrical parameters are firstly determined by using the software IE3D™ based on method of moment (MoM), then the formulation for resonant frequency has been derived with the use of simulation data. The coefficients of the effective length expression used in the calculation of resonant frequency are determined with artificial bee colony (ABC) algorithm which is an intelligent swarm optimization algorithm. The resonant frequencies calculated by the effective length expression are obtained with the average percentage error of 0.89 %. The validity and accuracy of the effective length expression is demonstrated on the ECMA fabricated in this work, whose size is less than 61 % as compared to that rectangular microstrip antenna (RMA).
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Abstract (Original Language): 
Bu çalışmada, E şekilli kompakt mikroşerit antenlerin (EKMA) rezonans frekansının belirlenmesi için etkin rezonans uzunluğu hesabına dayanan yeni ve basit bir yöntem önerilmiştir. Bu amaçla, ilkin farklı boyutlara ve elektriksel parametrelere sahip 144 adet EKMA’nın rezonans frekansları moment metoduna (MoM) dayanan IE3D™ simülasyon yazılımı kullanarak belirlenmiş, daha sonra simülasyon verileri kullanarak rezonans frekansı için bir formülasyon türetilmiştir. Rezonans frekansı hesabında kullanılan etkin uzunluk ifadesinin katsayıları, bir sürü zekası optimizasyon algoritması olan yapay arı koloni (YAK, artificial bee colony - ABC) algoritması yardımıyla belirlenmiştir. Etkin uzunluk ifadesi ile hesaplanan rezonans frekanslarının ortalama yüzde hata değeri % 0,89 olarak elde edilmiştir. Etkin uzunluk ifadesinin doğruluğu ve geçerliliği, dikdörtgen mikroşerit antene (DMA) göre % 61 daha küçük olan ve bu çalışmada gerçekleştirilen bir EKMA üzerinde gösterilmiştir.
FULL TEXT (PDF): 
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  • 4
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854
  • Turkish

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