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Impedance transforming directional couplers with increased achievable transformation ratio

Published online by Cambridge University Press:  26 April 2016

Jakub Sorocki ,
Ilona Piekarz ,
Krzysztof Wincza  and
Slawomir Gruszczynski
Jakub Sorocki
Affiliation:
AGH University of Science and Technology, 30-059 Cracow, Poland
Ilona Piekarz
Affiliation:
AGH University of Science and Technology, 30-059 Cracow, Poland
Krzysztof Wincza
Affiliation:
AGH University of Science and Technology, 30-059 Cracow, Poland
Slawomir Gruszczynski*
Affiliation:
AGH University of Science and Technology, 30-059 Cracow, Poland
*
Corresponding author: S. Gruszczynski Email: gruszczy@agh.edu.pl
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Abstract

Novel impedance transforming directional couplers are proposed in which the achievable impedance transformation ratio is increased above the previously reported limit related to coupling of the coupled-line sections. The proposed couplers consist of two coupled-line sections between which uncoupled sections of left-handed lines are connected. The presented concept has been verified by circuit simulations as well as by measurements of the manufactured 3-dB coupled-line impedance transforming directional coupler operating at f0 = 1.2 GHz and featuring twofold increased impedance transformation ratio R = 4.

Keywords

Directional couplerImpedance transformerCoupled-line couplersLeft-handed transmission lines
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 9 , Issue 3 , April 2017 , pp. 509 - 513
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2016 

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References

REFERENCES

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