RF characterization of magnetodielectric material using cavity perturbation technique

Kyu Han, Madhavan Swaminathan, Raj Pulugurtha, Himani Sharma, Rao Tummala, Brandon M. Rawlings, Vijay Nair

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

Magnetodielectric (MD) materials find application in many areas of microwave engineering, and therefore, measurement of their dielectric and magnetic properties is very important. This paper presents a novel MD material characterization method using the cavity perturbation technique (CPT) with substrate-integrated waveguide (SIW) cavity resonators. Frequency dependent complex permittivity and permeability of MD material can be extracted with a single SIW cavity structure by inserting the sample material into different locations. The fundamental theory of CPT is explained and its analysis for SIW cavity is discussed. Cobalt nanoparticles are synthesized with a fluoropolymer matrix to realize the MD materials and their properties are measured in the frequency range 1-4 GHz. The effect of volume fraction and density of the synthesized MD materials on the dielectric and magnetic properties has been studied.

Original languageEnglish (US)
Article number7331644
Pages (from-to)1850-1859
Number of pages10
JournalIEEE Transactions on Components, Packaging and Manufacturing Technology
Volume5
Issue number12
DOIs
StatePublished - Dec 2015

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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