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

Hideki Asao*, Moriyasu Miyazaki, Hideyuki Oh-Hashi, Osami Ishida

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


In a slot-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 along 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.

Original languageEnglish
Pages (from-to)12-21
Number of pages10
JournalElectronics and Communications in Japan, Part II: Electronics (English translation of Denshi Tsushin Gakkai Ronbunshi)
Issue number6
Publication statusPublished - 1996 Jun
Externally publishedYes


  • Magnetostatic wave
  • Nonlinear characteristics
  • Radiation reactance
  • Radiation resistance
  • Signal-to-noise enhancer
  • Slot line
  • YIG film

ASJC Scopus subject areas

  • General Physics and Astronomy
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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