A magnetostatic wave radiation impedance of symmetric slot line in signal-to-noise enhancer

✍ Scribed by Hideki Asao; Moriyasu Miyazaki; Hideyuki Oh-Hashi; Osami Ishida

• Book ID: 102819820
• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 645 KB
• Volume: 79
• Category: Article
• ISSN: 8756-663X
• DOI: 10.1002/ecjb.4420790602

✦ Synopsis

In a sld-line-type signal-to-noise enhancer for a magnetostatic wave, it is shown theoretically and confirmed experimentally that enhancement can be improved by the symmetric slot-line structure with yttrium iron garnet (YIG) films on both sides of the slot line and by the layered structure of high permittivity materials. It is shown that the improvement in the amount of enhancement requires an increased attenuation constant of the slot line caused by the conversion loss of the linear operation to the magnetostatic wave. The magnetostatic wave radiation impedance is then derived by recognizing the contribution of the magnetic flux density normal to the slot plane among the electromagnetic field components traveling dong the slot line to the conversion of the magnetostatic wave. By means of this radiation impedance, the attenuation constant is derived for the symmetric slot line and the slot line with a high permittivity layered structure so that improvement to enhancement is clarified.