The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
권호 표지
DOI QR코드

DOI QR Code

Method for Measurement of Complex Relative Permittivity of Semi-Solid Materials Using Novel Cavity Resonator Design

캐비티 공진기를 이용한 반고체 상태 물질의 복소 비유전율 측정 방법

  • Park, Rae-Seoung (School of Electrical and Computer Engineering, The University of Seoul) ;
  • Jang, Jihyun (School of Electrical and Computer Engineering, The University of Seoul) ;
  • Park, Byungdeok (School of Electrical and Computer Engineering, The University of Seoul) ;
  • Kim, Junhwan (School of Electrical and Computer Engineering, The University of Seoul) ;
  • Park, Sangbok (School of Electrical and Computer Engineering, The University of Seoul) ;
  • Chung, Young-Seek (Department of Electronics Convergence Engineering, Kwangwoon University) ;
  • Cheon, Changyul (School of Electrical and Computer Engineering, The University of Seoul)
  • 박래승 (서울시립대학교 전자전기컴퓨터공학부) ;
  • 장지현 (서울시립대학교 전자전기컴퓨터공학부) ;
  • 박병덕 (서울시립대학교 전자전기컴퓨터공학부) ;
  • 김준환 (서울시립대학교 전자전기컴퓨터공학부) ;
  • 박상복 (서울시립대학교 전자전기컴퓨터공학부) ;
  • 정용식 (광운대학교 전자융합공학과) ;
  • 천창율 (서울시립대학교 전자전기컴퓨터공학부)
  • Received : 2014.07.07
  • Accepted : 2014.08.08
  • Published : 2014.08.31
Download PDF
⟨ Previous Next ⟩

Abstract

This paper proposes a measurement method of the complex relative permittivity of semi-solid materials using a new cavity structure. Semi-solid materials are positioned in the proposed cavity where an aperture exists on each corner of the upper part and a ground plane is separated. In order to show the validation of the proposed method, we measured the complex relative permittivity of distilled water and 0.9 % saline by sensing a shift of resonant frequency and using Critical-Points Method, and compared the results with those derived from the Cole-Cole equation.

본 논문은 새로운 캐비티 공진기 구조를 이용한 반고체 상태 물질의 복소 비유전율 측정 방법을 제안하고 있다. 윗면에 개구면이 존재하고, Ground 판이 분리되어 있는 구조를 이용하여 반고체 상태 물질도 캐비티 내부에 위치할 수 있도록 했다. 공진주파수의 변화와 Critical-Points Method를 이용해 실험적으로 증류수와 0.9 % 식염수의 복소 비유전율을 측정하였으며, 측정값을 Cole-Cole Equation을 통해 이론값과 비교했다.

Keywords

References

  1. Sangbok Park, Young-seek Chung, and Changyul Cheon, "Simple technique for measurement of compelx permittivity and detection of small permittivity change using paratially open cavity", Journal of Electrical Engineering & Technology, vol. 9, no. 1, pp. 268-272, Jan. 2014. https://doi.org/10.5370/JEET.2014.9.1.268
  2. D. M. Pozar, Microwave Engineering, 4th ed., New York, Wiley & Sons, pp. 284-288, 2011.
  3. En-Tuan Sun, Shuh-Han Chao, "Unloaded Q mesurement - the critical-points method", IEEE Trans. Microwave Theory & Tech., vol. 43, no. 8, pp. 1983-1986, Aug. 1995. https://doi.org/10.1109/22.402290
  4. A. Nyshadham, C. L. Sibbald, and S. S. Stuchly, "Permittivity measurements using upen-ended sensors and reference liquid calibration - An uncertainty analysis", IEEE Trans. Microwave Theory & Tech., vol. 40, no. 2, pp. 305-314, Feb. 1992. https://doi.org/10.1109/22.120103