Analysis of Multilayered Co-Zr-Nb Film On-Chip Noise Suppressor as a Function of Resistivity and Permeability

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9 Citations (Scopus)

Abstract

Near-field noise suppression and conduction losses in a multilayered, amorphous, Co-Zr-Nb thin film with uniaxial anisotropy were simulated and measured with a microstrip line. A 16 dB magnetic near-field shielding effectiveness at 1.1 GHz and a maximum conduction loss around 2.1 GHz were obtained. Eddy-current and ferromagnetic-resonance (FMR) losses were considered as major contributors to near-field noise suppression around 1 GHz. These losses were numerically analyzed by controlling film resistivity and frequency-dependent complex permeability. The degree of shielding effectiveness was significantly controlled by the eddy-current loss. The frequency of the maximum near-field suppression was dominated by the FMR frequency.

Original languageEnglish
Article number7468521
JournalIEEE Magnetics Letters
Volume7
DOIs
Publication statusPublished - 2016

Keywords

  • Co-Zr-Nb
  • Soft magnetic materials
  • eddy currents
  • electromagnetic noise suppressor
  • ferromagnetic resonance
  • near-field noise

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

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