Title :
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
fDate :
7/1/2001 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
