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Left-handed lumped transmission lines and left-handed small impedance transformers

✍ Scribed by Ahn Hee-Ran; Kim Bumman

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
210 KB
Volume
50
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

Based on the concept that a left‐handed transmission line section has a negative electrical length, two Π‐type lumped equivalent circuits are presented, and it is newly suggested that a low‐pass filter type can be its lumped‐equivalent circuit under a certain condition. Applying the negative electrical length concept to Smith chart, left‐handed small impedance transformers are derived and two are validated by measurements, adding 180° right‐handed transmission lines to the impedance transformers. The measured results are in good agreements with predictions, showing that insertion and return losses are −0.23 and −22.5 dB, respectively. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 2269–2271, 2008; Published online in Wiley InterScience (www.interscience.wiley.com).DOI 10.1002/mop.23676

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