Title :
Planar magnetostatic wave resonator with annual-ring slot
Author :
Guan, Ning ; Yashiro, Ken´ichiro ; Ohkawa, Sumio
Author_Institution :
Dept. of Electr. & Electron. Eng., Chiba Univ., Japan
Abstract :
A novel type of resonator using magnetostatic forward volume waves (MSFVWs) with an annual-ring slot is presented, where the annual-ring slot formed on an yttrium iron garnet (YIG) film by a photolithography technique plays a role in confining the energy of magnetostatic waves. The magnetostatic waves are excited through a slot transmission line fabricated at the same photolithography stage. The resonator is tunable from 2 to 4 GHz according as the variation of the DC bias magnetic field from 2300 to 3200 Oe and shows a high Q of 700 to 2000 with insertion loss of 9 to 30 dB for the dominant mode. An analysis based on a magnetic wall model is provided to give a reasonable explanation to the observed phenomena
Keywords :
magnetostatic wave devices; resonators; 2 to 4 GHz; 9 to 30 dB; DC bias magnetic field; YFe5O12; YIG film; annual-ring slot; high Q; insertion loss; magnetic wall model; magnetostatic forward volume waves; magnetostatic wave energy confinement; photolithography technique; planar magnetostatic wave resonator; slot transmission line; Garnet films; Insertion loss; Iron; Lithography; Magnetic confinement; Magnetic fields; Magnetic films; Magnetostatic waves; Transmission lines; Yttrium;
Conference_Titel :
Ultrasonics Symposium, 1991. Proceedings., IEEE 1991
Conference_Location :
Orlando, FL
DOI :
10.1109/ULTSYM.1991.234154
