Mechanically tunable MSW bandpass filter with combined magnetic units

Author

Ishikawa, Y. ; Nishikawa, T. ; Okada, T. ; Shinmura, S. ; Kamado, Y. ; Kanaya, F. ; Wakino, K.

Author_Institution

Murata Manuf. Co. Ltd., Kyoto, Japan

fYear

1990

fDate

8-10 May 1990

Firstpage

143

Abstract

An MSW (magnetostatic wave) bandpass filter with combined magnetic units composed of main and submagnetic units has been developed. Its volume is reduced to one fifth that of conventional yttrium-iron-garnet (YIG)-sphere filters. The filter can be tuned mechanically and keep the same shape of transmission response at 2.5 approximately 2.75 GHz. The insertion loss can be kept less than 3 dB within 20-MHz bandwidth by adjusting the magnetic field distribution.<>

Keywords

band-pass filters; garnets; magnetostatic wave devices; microwave filters; passive filters; tuning; yttrium compounds; 2.5 to 2.75 GHz; 20 MHz; 3 dB; YFe5O12; YIG based filter; bandwidth; combined magnetic units; garnets; insertion loss; magnetic field distribution; magnetostatic wave filters; main magnetic units; mechanically tunable MSW bandpass filters; submagnetic units; transmission response; tuned mechanically; volume; Band pass filters; Degradation; Fasteners; Insertion loss; Magnetic fields; Magnetic separation; Magnets; Microwave filters; Transducers; Tunable circuits and devices;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 1990., IEEE MTT-S International

Conference_Location

Dallas, TX

Type

conf

DOI

10.1109/MWSYM.1990.99543

Filename

99543