The Stability Analysis of Distributed Amplifier<br/>

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The Stability Analysis of Distributed Amplifier

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 46791 (05)
University: Sharif University of Technology
Department: Electrical Engineering
Advisor(s): Medi, Ali
Abstract:
Advancement in the field of electronics can often be observed from the improvement in performance of active circuits and systems. The amplifier, because it is a highly versatile functional circuit, has always been one of the first to benefit from new developments. Of the many characteristic of an amplifier, perhaps the most notable are the gain and the frequency response. In many applications, both the gain and the bandwidth need to be optimized. One of the most significant structures which have proper gain and bandwidth, are distributed amplifiers. But these structures are nonsymmetrical and have many active loops. As a result, the stability analysis of distributed amplifier is quite arduous. In this thesis, a condition of elements for being unconditional stable without prevalent methods is investigated. After that, a new method is presented for intrinsic stability analysis of multi-transistors circuits whereby stabilization networks can be studied. This method is based on return ratio analyzing. Finaly, the proposed method is verified by designing a non-uniform distributed amplifier in GaAs pHEMT with gate length 0.1 um
Keywords:
Stabilization ; Stability Analysis ; Unconditional Stability ; Intrinsic Stability ; Uniform Distributed Amplifier ; Nonuniform Distributed Amplifier

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