GRİ KURT ALGORİTMASI İLE 900 MHZ GSM BANT UYGULAMALARI İÇİN DÜŞÜK GÜRÜLTÜLÜ KUVVETLENDİRİCİ TASARIM OPTİMİZASYONU

Bu çalışmada GSM uygulamalarına yönelik, yüksek performanslı bir düşük gürültülü kuvvetlendirici (DGK) tasarımı ele alınmıştır. Toplam sistemin gürültüsüne olan baskın etkisinden dolayı, DGK kablosuz haberleşme sistemlerinin anahtar elemanlarından biridir. Her ne kadar da birden çok transistor elemanı ve kat yapısı kullanılarak çok yüksek kazanç ve düşük gürültü karakteristiği elde edile biliniyor ise de, bu yöntem toplam tasarım karmaşıklığını ve üretim maliyetini ciddi bir şekilde etkilemektedir. Bu çalışma kapsamında, tek bir transistor elemanı kullanılarak 14.3 dB kazanç, 15 dB den düşük geri donuş kaybı ve 1.8 dB seviyesinde gürültü karakteristiği gösteren GSM 820-980 MHz uygulamalarına uygun bir tasarım önermektir.

Anahtar Kelimeler:

Düşük Gürültülü Yükselteç, GSM, Kablosuz Haberleşme, Gri Kurt, Optimizasyon

DESIGN OPTIMIZATION OF LOW NOISE AMPLIFIER FOR 900MHZ GSM BAND APPLICATIONS USING GREY WOLF ALGORITHM

In this work, the design of a high-performance single-stage Low Noise Amplifier (LNA) for GSM applications is taken into consideration. LNA design is one of the key stages of a wireless communication system due to its dominance over the whole system's noise figure performance. Although it is possible to achieve a very high gain and low noise figure with the usage of multi-stage transistors, such designs would also have a high complexity and manufacturing cost. The main aim of this work is to propose a single transistor LNA design for GSM application with a gain level of 14.3 dB, return loss level of less than 15 dB, and noise figure of 1.8 dB over the operation band of 820-980 MHz. the optimal design variables of the model is obtained via Grey Wolf optimization procedure.

Keywords:

Low Noise Amplifier, GSM, Wireless Communications, Grey Wolf, Optimization,

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