SRFT ile frekans transformasyonunu kullanarak band geçiren filtre prototipi üzerinden çokluband filtre tasarımı
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Dosyalar
Tarih
2017-02-10
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
IEEE
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Çokluband filtre tasarım problemi analitik ve uygulama yönünden ele alınr. Temel amaç Almaç Güç Kazanç (AGK) karakteristiğini frekans band üzerinden tanımlamaktır. AGK’nın belli bantlarda yükseltilmesi belli bantlarda bastrılması istenmektedir. Bu çalşmada iyi tanmlanmış analitik teoriyi kullanarak çokluband cevap üretmek için yeni bir yöntem sunulmuştur. SRFT(Simplified Real Frequency Technique) tabanlı transformatörsüz bir band geçiren devre tasarm yapılmş ve bu devrenin tanımlanan saçılma polinomlar üzerine tek aşamalı bir alçak geçirenden band geçirene frekans dönüşümü uygulanarak çoklu band da filtre devresi sentezlenebileceği gösterilmiştir. Bu yöntemle bir çift band filtre tasarım örneği sunulmuştur. Bu yapının, alçak geçiren transfer fonksiyonu üzerine iç içe iki kez transformasyon uygulanmasıyla elde edilen çift band filtreye göre birçok avantaj vardır. Bunlar band kenar keskin geçişlerinin kontrolü, az eleman sayısıyla gerçekleme ve sentezlenen devrenin basit bir dönüştürmeyle ayrık domaine kolay aktarılabilmesi ve parazitik eşlemelerin elimine edilmesidir.
Multiband filter design problem includes both analytical and implementation aspects. The main interest is defining a Transducer Power Gain (TPG) function characteristic over frequency bands. It is demanded to suppress or amplify the TPG at certain frequencies. In this study a new method is presented for creating the multiband response with using well defined analytical approach. A transformer-less bandpass filter prototype is synthesized with using well known Simplified Real Frequency Technique (SRFT) and multiband characteristic is derived with applying a basic frequency transformation on the bandpass prototype filter. A double band filter design example is prensented. Descriptive functions of each sections are given in scattering polynomail form. Certain advantages are provided with using this method besides the sequential application of basic low pass to band pass transfromation on a low pass transfer function such as low counts of elements, controlling the filter roll off, easy conversion to distributed domain without probable parasitic couplings.
Multiband filter design problem includes both analytical and implementation aspects. The main interest is defining a Transducer Power Gain (TPG) function characteristic over frequency bands. It is demanded to suppress or amplify the TPG at certain frequencies. In this study a new method is presented for creating the multiband response with using well defined analytical approach. A transformer-less bandpass filter prototype is synthesized with using well known Simplified Real Frequency Technique (SRFT) and multiband characteristic is derived with applying a basic frequency transformation on the bandpass prototype filter. A double band filter design example is prensented. Descriptive functions of each sections are given in scattering polynomail form. Certain advantages are provided with using this method besides the sequential application of basic low pass to band pass transfromation on a low pass transfer function such as low counts of elements, controlling the filter roll off, easy conversion to distributed domain without probable parasitic couplings.
Açıklama
Anahtar Kelimeler
Amplification, Analytical approach, Bandpass filters, Band-pass filters, Bandpass prototype filter, Basic frequency transformation, Biomedical engineering, Couplings, Distributed domain, Double band filter design example, Electronic medical equipment, Filter roll off, Frequency bands, Frequency synthesizers, Frequency transformations, Function characteristic, Germanium, Heterojunction bipolar transistors, Implementation aspects, Low pass transfer function, Low-pass filters, Multiband filter design problem, Multiband response, Multiband characteristics, Notch filters, Parasitic couplings, Polynomials, Prototypes, Scattering, Scattering polynomial form, Sequential applications, Simplified real frequency technique, Simplified real frequency techniques, SRFT, TPG function characteristic, Transducer power gain function characteristic, Transducers, Transfer functions, Transformer-less bandpass filter prototype, Wideband bandstop
Kaynak
2016 National Conference on Electrical, Electronics and Biomedical Engineering, ELECO 2016
WoS Q Değeri
N/A
Scopus Q Değeri
N/A
Cilt
Sayı
Künye
Yıldız, S., Aksen, A. & Yarman, B. S. B. (2016). Multiband filter design from bandpass prototype filter with using frequency transformation via SRFT. Paper presented at the 2016 National Conference on Electrical, Electronics and Biomedical Engineering, ELECO 2016, 432-436.
