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Tunable microwave devices based on left/right-handed transmission line sections in multilayer implementation

Published online by Cambridge University Press:  25 June 2009

Polina Kapitanova*
Affiliation:
Department of Microelectronics and Radio Engineering, St. Petersburg Electrotechnical University, 5 Prof. Popov Street, 197376 St. Petersburg, Russia. Phone/Fax: +7 8123460867.
Dmitry Kholodnyak
Affiliation:
Department of Microelectronics and Radio Engineering, St. Petersburg Electrotechnical University, 5 Prof. Popov Street, 197376 St. Petersburg, Russia. Phone/Fax: +7 8123460867.
Stefan Humbla
Affiliation:
Institute for Micro- and Nanotechnologies, Ilmenau University of Technology, P.O. Box 100565, 98684 Ilmenau, Germany. Phone: +49 3677692832; Fax: +49 3677691586.
Ruben Perrone
Affiliation:
Institute for Micro- and Nanotechnologies, Ilmenau University of Technology, P.O. Box 100565, 98684 Ilmenau, Germany. Phone: +49 3677692832; Fax: +49 3677691586.
Jens Mueller
Affiliation:
Institute for Micro- and Nanotechnologies, Ilmenau University of Technology, P.O. Box 100565, 98684 Ilmenau, Germany. Phone: +49 3677692832; Fax: +49 3677691586.
Matthias A. Hein
Affiliation:
Institute for Micro- and Nanotechnologies, Ilmenau University of Technology, P.O. Box 100565, 98684 Ilmenau, Germany. Phone: +49 3677692832; Fax: +49 3677691586.
Irina Vendik
Affiliation:
Department of Microelectronics and Radio Engineering, St. Petersburg Electrotechnical University, 5 Prof. Popov Street, 197376 St. Petersburg, Russia. Phone/Fax: +7 8123460867.
*
Corresponding author: P. Kapitanova Email: [email protected]

Abstract

Metamaterial transmission lines can be realized as a combination of right- and left-handed transmission line (TL) sections exhibiting positive and negative dispersion. This approach gives additional degrees of freedom for improving the performance of microwave devices. Artificial right- and left-handed sections, which are based on lumped-element unit cells consisting of inductance and capacitances (LC-cells), are used. This makes it possible to decrease dimensions of the devices drastically. Furthermore, using variable capacitors in LC-cells allows designing tunable devices. This paper presents the results of design, numerical simulation, and experimental investigation of a tunable rat-race ring and free-of-spurious response dual-band filter manufactured as integrated ceramic multilayer circuits based on low-temperature co-fired ceramics. Commercial semiconductor varactors have been used as tunable components.

Type
Original Article
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2009

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References

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