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Optimum Design of a Microwave Low-Noise Amplifier by Means of Least Mean Square Error (LMS) Technique in S Frequency Band | ||
| Computational Sciences and Engineering | ||
| مقاله 18، دوره 4، شماره 1، تیر 2024، صفحه 125-134 اصل مقاله (604.72 K) | ||
| نوع مقاله: Original Article | ||
| شناسه دیجیتال (DOI): 10.22124/cse.2025.29132.1090 | ||
| نویسندگان | ||
| Saeed Reza Ostadzadeh* 1؛ Sina Feyzi2 | ||
| 1Faculty of Engineering, Arak University, Arak, Iran | ||
| 2BSC student from Arak University, Arak, Iran | ||
| چکیده | ||
| In this paper a low noise amplifier (LNA) in the frequency interval of [3-5] GHz is designed and optimized. The design process consists of three parts. At first, the stability of the bipolar junction transistor (BJT) is investigated. Simulation results show that it is unconditionally stable in the whole frequency interval. In the second part, the input and output matching networks are constructed in such a way that the desired transducer power gain (GT=10dB) and possible minimum noise figure (Fn) are achieved simultaneously. In order to achieve approximately constant GT and Fn in the desired frequency interval, the input and output matching networks are finally optimized using least mean square error technique. Once the optimization process is converged, variations of GT and Fn in the whole frequency interval are respectively less than 1dB and 0.5 dB. Besides, the variation of output phase is approximately linear. | ||
| کلیدواژه‌ها | ||
| LNA؛ Optimization؛ Power gain؛ Noise figure؛ Broadband | ||
| مراجع | ||
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[6] Maryam Imani (2022), “Convolutional Neural Networks with Different Dimensions for PolSAR Image Classification”, Computational Sciences and Engineering, 2(1), 69-79.
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