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The characteristic analysis of CPW bandpass filter by magnetic material

  • Wu Shiung Feng
  • , Prasenjit Chatterjee
  • , Hsiu Chuan Lin
  • , Chin I. Yeh
  • , Ho Hsin Li
  • Chang Gung University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper presents the characteristic analysis of coplanar waveguide (CPW) filters with flaky magnetic material on top of the filter. This 2-port CPW 2.3-GHz filter with single-ended input single-ended (SISO) output is fabricated on FR4 (Flame Retardant 4) substrate, to discuss the influence of magnetic material on the variations of operating frequency, bandwidth and center frequency. According to measurement results, when magnetic material with different thicknesses is placed on the CPW filter, the center frequency of the filter decreases as the thickness of the magnetic material increases, and vice versa. The frequency decreases by 20% as the thickness of 4mm magnetic material on the top. The lower and upper sides of passband frequency are reduced by 3.29MHz and 6.71MHz per mm thickness of magnetic material on average, respectively. This change can be achieved due to the magnetic materials' layers on top of CPW filter not by changing the actual hardware of the circuit.

Original languageEnglish
Title of host publicationICCAS 2013 - 2013 IEEE International Conference on Circuits and Systems
Subtitle of host publication"Advanced Circuits and Systems for Sustainability"
PublisherIEEE Computer Society
Pages92-95
Number of pages4
ISBN (Print)9781479913374
DOIs
StatePublished - 2013
Event2013 IEEE International Conference on Circuits and Systems: "Advanced Circuits and Systems for Sustainability", ICCAS 2013 - Kuala Lumpur, Malaysia
Duration: 18 09 201319 09 2013

Publication series

NameICCAS 2013 - 2013 IEEE International Conference on Circuits and Systems: "Advanced Circuits and Systems for Sustainability"

Conference

Conference2013 IEEE International Conference on Circuits and Systems: "Advanced Circuits and Systems for Sustainability", ICCAS 2013
Country/TerritoryMalaysia
CityKuala Lumpur
Period18/09/1319/09/13

Keywords

  • CPW
  • Filter
  • Frequency shift
  • Magnetic Material

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