Improvements in the Transient Response of Distributed Amplifiers

Emad HAMIDI  Mahmoud MOHAMMAD-TAHERI  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E90-C   No.10   pp.2062-2066
Publication Date: 2007/10/01
Online ISSN: 1745-1353
DOI: 10.1093/ietele/e90-c.10.2062
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Microwaves, Millimeter-Waves
Keyword: 
distributed amplifier,  transient response,  group delay,  lowpass filter,  parasitic elements,  transmission line loss,  

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Summary: 
A new method is presented in order to improve the transient response of distributed amplifiers. The method is based on fitting the parameters of the distributed amplifier to those of a predesigned lowpass filter. Analytical expressions are derived to show the performance of the new structure. Three distributed amplifiers are designed based on the proposed method and it has been shown that the new method can significantly improve the transient response of the amplifier. It has been shown that the new method can improve the other characteristics of the distributed amplifier too. The effects of parasitic and lossy elements has also been considered and it has been shown that such effects doesn't violate the generality of the proposed theory.