Effect of Complex Permeability on Circuit Parameters of CPW with Magnetic Noise Suppression Sheet

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  • MUROGA Sho
    Graduate School of Engineering Science, Akita University
  • TANAKA Motoshi
    Graduate School of Engineering Science, Akita University
  • YOSHIKAWA Takefumi
    Department of Electrical and Computer Engineering, Toyama Prefectural University
  • ENDO Yasushi
    Graduate School of Engineering, Tohoku University Center for Science and Innovation in Spintronics, Tohoku University Center for Spintronics Research Network, Tohoku University

Abstract

<p>An effect of complex permeability of noise suppression sheets (NSS) on circuit parameters was investigated by a magnetic circuit analysis using cross-sectional size and material parameters. The series resistance and inductance of the coplanar waveguide (CPW) with a NSS considering the effect of the complex permeability of the NSS were quantitatively estimated. The result indicated that the imaginary and real part of the effective permeability affected the resistance and inductance, respectively. Furthermore, this analysis was applied to an 8-μm-wide CPW with a 0.5-μm-thick Co85Zr3Nb12 film for quantitative estimation of the resistance, the inductance and the characteristic impedance. The estimated parameters were almost similar to the measured values. These results showed that the frequency characteristics of the circuit parameters could be controlled by changing size and material parameters.</p>

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