An Implementation of Compact Quarter-Wave-Like- Transformers Using Multi-section Transmission Lines
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Date
2018-04
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Referee
Mark
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Společnost pro radioelektronické inženýrství
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Abstract
This paper proposes a novel miniaturization technique of quarter-wave transformers (QWTs), implemented using multi-section transmission lines (MSTLs), based on the quarter-wave-like transformer (QWLT) theory. Multi-section QWLT characteristics are derived analytically and solved via appropriate optimization algorithms for associated transmission-line parameters. For an illustration purpose, two- and three-section QWLT prototypes with 50% physical size reduction from the corresponding QWT size operating at 2.4 GHz are fabricated using microstrips and tested. It is found that these prototypes yield acceptable return loss at 2.4 GHz without significant bandwidth reduction, comparing to the QWT result.
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Citation
Radioengineering. 2018 vol. 27, č. 1, s. 101-109. ISSN 1210-2512
https://www.radioeng.cz/fulltexts/2018/18_01_0101_0109.pdf
https://www.radioeng.cz/fulltexts/2018/18_01_0101_0109.pdf
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Peer-reviewed
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en