Influence of the control signal input in pinhole device [thin-film transformer]

Author

Tsujimoto, H. ; Wada, T. ; Shirae, K.

Author_Institution

Fac. of Eng. Sci., Osaka Univ., Japan

Volume

28

Issue

5

fYear

1992

fDate

9/1/1992 12:00:00 AM

Firstpage

3018

Lastpage

3020

Abstract

The modulation of the output signal from a thin-film transformer was studied. This type of thin-film transformer uses a strip line and an amorphous CoNbZr magnetic film. The changes in reflection and transmission coefficients for the transformer were observed by the application of a local magnetic field using a control current. The reflection coefficient changed drastically; however, the change of the transmission coefficient was small. The effect from the control pinhole adjacent to the input strip line was larger than the effects observed from other control pinholes. Two types of thin-film transformer with two control pinholes were prepared. The local magnetic field near the input and output pinholes can be adjusted by the polarity and intensity of the control current. It was demonstrated that the characteristics of the thin-film transformer were controllable by a local magnetic field

Keywords

cobalt alloys; magnetic properties of amorphous substances; magnetic thin film devices; niobium alloys; transformers; zirconium alloys; amorphous CoNbZr magnetic film; control signal input; local magnetic field; modulation; output signal; pinhole device; reflection coefficients; strip line; thin-film transformer; transmission coefficients; Frequency; Magnetic devices; Magnetic fields; Magnetic films; Reflection; Sputtering; Strips; Thin film devices; Thin film inductors; Transistors;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.179703

Filename

179703