Title :
Characteristics of microstrip line on YIG film substrate and its application to beam forming of antenna
Author :
Tsutsumi, M. ; Ueda, T.
Author_Institution :
Dept. of Electron. & Inf. Sci., Kyoto Inst. of Technol., Japan
Abstract :
Characteristics of a microstrip line on a yttrium iron garnet (YIG) film substrate are investigated by using the spectral domain method and the effect of the strip width on the coupling between magnetostatic forward volume wave (MSFVW) and quasi-TEM mode are discussed under the estimation of the calculated dispersion relation. To confirm the dispersion curve, delay line characteristics of the stripline proposed have been experimentally examined using 20-/spl mu/m and 100 /spl mu/m-thick YIG films both in the linear and nonlinear regime. The beam forming of antenna pattern has also been experimentally demonstrated as an application of the delay line using the MSFVW mode in the stripline.
Keywords :
beam steering; garnets; magnetic microwave devices; magnetic thin film devices; microstrip antennas; microstrip lines; microwave phase shifters; spectral-domain analysis; yttrium compounds; 100 micron; 20 micron; YFe5O12; YIG; antenna beam forming; delay line characteristics; dispersion relation; linear regime; magnetostatic forward volume wave; microstrip line; nonlinear regime; quasi-TEM mode; spectral domain method; strip width; Couplings; Delay lines; Garnet films; Iron; Magnetic domains; Microstrip; Stripline; Strips; Substrates; Yttrium;
Conference_Titel :
Microwave Symposium Digest, 1999 IEEE MTT-S International
Conference_Location :
Anaheim, CA, USA
Print_ISBN :
0-7803-5135-5
DOI :
10.1109/MWSYM.1999.779641
