Title :
On the YIG film waveguides
Author :
Tsutsumi, Makoto ; Okubo, Kensuke
Author_Institution :
Fac. of Eng. & Design, Kyoto Inst. of Technol., Japan
fDate :
9/1/1992 12:00:00 AM
Abstract :
Investigates a type of microstrip line on a pair of yttrium-iron-garnet (YIG) films grown on both sides of a gadolinium-gallium-garnet substrate and sandwiched between two dielectric slabs. Transmission characteristics of the line show coupling phenomena between quasi-TEM (transverse electromagnetic) and magnetostatic surface wave modes. A sharp notch characteristic is observed experimentally with a half-power bandwidth of 11.8 MHz and maximum attenuation of 20 dB at 6.95 GHz for 13.5-μm-thick films. Alternatively, in the same line with an air gap a bandpass characteristic is observed with quality factor of 1000 and insertion loss of 10 dB at 6.5 GHz
Keywords :
garnets; magnetic thin films; magnetostatic waves; microstrip lines; yttrium compounds; 10 dB; 11.8 MHz; 13.5 micron; 6.95 GHz; 65 GHz; GdGG; GdGa5O12; YFe5O12-GdGa5O12; YIG-GdGG; bandpass characteristic; coupling phenomena; dielectric slabs; half-power bandwidth; magnetostatic surface wave modes; maximum attenuation; microstrip line; notch characteristic; quasi-TEM modes; Bandwidth; Dielectric substrates; Electromagnetic coupling; Electromagnetic scattering; Electromagnetic waveguides; Magnetostatic waves; Microstrip; Slabs; Surface waves; Yttrium;
Journal_Title :
Magnetics, IEEE Transactions on
