A wideband electronically tunable magnetostatic wave notch filter in YIG-GaAs waveguide structure

Author

Tsai, Chen S. ; Su, Jun

Author_Institution

Dept. of Electr. & Comput. Eng., California Univ., Irvine, CA, USA

Volume

1

fYear

1998

fDate

1998

Firstpage

123

Abstract

An electronically tunable microwave notch (band-stop) filter has been constructed in an yttrium-iron-garnet (YIG)/gallium arsenide (GaAs) material structure. An incident microwave propagating along the microstrip transmission line in the GaAs substrate is coupled to the magnetostatic surface waves excited in the YIG layer, which is laid upon the microstrip transmission line. Maximum coupling and thus the peak absorption of the output microwave power occur at the ferromagnetic resonance frequency in the YIG film as determined by a bias magnetic field. A tuning range as large as 1.6 to 13.6 GHz in the resonance frequency with the corresponding magnetic field tuning range of 70 to 4000 Oe has been accomplished

Keywords

UHF filters; gallium arsenide; garnets; magnetic microwave devices; magnetostatic surface waves; magnetostatic wave devices; microstrip lines; microwave filters; notch filters; passive filters; tuning; yttrium compounds; 1.6 to 13.6 GHz; GaAs; GaAs substrate; YFe5O12; YFe5O12-GaAs; YIG; YIG layer; YIG-GaAs; YIG-GaAs waveguide structure; band-stop filter; bias magnetic field; electronically tunable notch filter; ferromagnetic resonance frequency; magnetostatic surface waves; magnetostatic wave notch filter; microstrip transmission line; tuning range; wideband MSW notch filter; Couplings; Gallium arsenide; Magnetic resonance; Magnetic separation; Magnetostatic waves; Microstrip; Microwave filters; Power transmission lines; Resonant frequency; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1998. Proceedings., 1998 IEEE

Conference_Location

Sendai

ISSN

1051-0117

Print_ISBN

0-7803-4095-7

Type

conf

DOI

10.1109/ULTSYM.1998.762114

Filename

762114