A thin film type magnetic/dielectric hybrid transmission-line with a large wavelength shortening

Author

Ikeda, Shinji ; Sato, Toshiro ; Ohshiro, Atsushi ; Yamasawa, Kiyohito ; Sakuma, Toshiyuki

Author_Institution

Graduate Sch. of the Sci. & Technol., Shinshu Univ., Nagano, Japan

Volume

37

Issue

4

fYear

2001

fDate

7/1/2001 12:00:00 AM

Firstpage

2903

Lastpage

2905

Abstract

A novel thin film type hybrid transmission-line device with a magnetic/dielectric multilayer structure was developed. The magnetic/dielectric hybrid micro strip-line consisted of a top aluminum strip line, the CoZrNb/polyimide multilayer structure, and bottom aluminum ground plane on the Al₂O₃ substrate. The hybrid microstrip-line exhibited a large wavelength shortening effect. For example, the wavelength ratio of the hybrid transmission-line and free space was below 7%. Therefore, a quarter wavelength distributed constant line device, such as impedance converter, balun and filter, will be miniaturized using the new hybrid transmission-line, because of its large wavelength shortening effect

Keywords

baluns; cobalt alloys; impedance convertors; magnetic microwave devices; magnetic thin film devices; microstrip lines; niobium alloys; polymer films; zirconium alloys; Al₂O₃; CoZrNb/polyimide multilayer; balun; hybrid microstrip-line; impedance converter; magnetic/dielectric hybrid transmission-line; magnetic/dielectric multilayer structure; quarter wavelength distributed constant line device; wavelength shortening effect; Aluminum; Dielectric devices; Dielectric substrates; Dielectric thin films; Magnetic devices; Magnetic films; Magnetic multilayers; Strips; Thin film devices; Transmission lines;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.951342

Filename

951342