NDLI: Novel design method of a multi-section transmission-line transformer using genetic algorithm techniques

Content Provider	IEEE Xplore Digital Library
Author	Chen Ming
Copyright Year	2008
Description	Author affiliation: Sch. of Opt. & Electron. Eng., Chong Qing Univ. of Posts & Telecommun., Chongqing (Chen Ming)
Abstract	A novel design method of a multi-section transmission-line transformer (TLT) for simultaneously matching multi-arbitrary frequencies and an arbitrary load is developed, based on an ideal transmission-line circuit mode and optimization design using genetic-algorithm techniques. Optimum design equations of the TLT are derived, and the related algorithm and procedure are described. In order to test and verify validity of the method, an three-section transmission-line transformer (TLT) for matching three arbitrary frequencies and an arbitrary load, is designed and analyzed by letting $f_{1}=0.9$ GHz, $f_{2}=1.8$ GHz, and $f_{3}$ =2.4 GHz with matching $Z_{0}=50$ to $Z_{L}=30$ Omega, 75 Omega, and 100 Omega, respectively. And excellent agreement between the numerical results and the result presented by Michai is shown. The new design method avoid completed and closed - form design equations. Further, by this method, a four-section transmission-line transformer (TLT) for simultaneously matching four operating frequencies, i.e., 0.9 GHz, 1.8 GHz, 2.4 GHz, and 3.7 GHz, at different transforming ratio values, is designed and simulated effectively.
Starting Page	3793
Ending Page	3796
File Size	458777
Page Count	4
File Format	PDF
ISBN	9781424438266
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-17
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	IEEE Consumer Electronics Society(CES)
Subject Keyword	Design methodology Transmission lines Genetic algorithms Frequency Equations Circuits Algorithm design and analysis Impedance Dual band Genetic engineering
Content Type	Text
Resource Type	Article

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