The Exact Field Representation in Cylindrical Cavity Resonators with Concentric Dielectric-rod

동심 유전체 봉이 삽입된 원통형 공진기의 정확한 전자계 표현

  • Choi, Hong-Ju (Dept.of Electronics, Information & Communication Eng., Konkuk Univ.) ;
  • Lee, Won-Hui (Dept.of Electronics, Information & Communication Eng., Konkuk Univ.) ;
  • Hur, Jung (Dept.of Electronics, Information & Communication Eng., Konkuk Univ.) ;
  • Choi, Gwang-Je (School of Electrical, Electronic and Computer Eng., Halla Univ.) ;
  • Lee, Sang-Young (Dept.of Physics, Konkuk Univ.)
  • 최홍주 (건국대학교 전자.정보통신공학과) ;
  • 이원희 (건국대학교 전자.정보통신공학과) ;
  • 허정 (건국대학교 전자.정보통신공학과) ;
  • 최광제 (한라대학교 전기.전자.컴퓨터공학부) ;
  • 이상영 (건국대학교 물리학과)
  • Published : 2000.12.01

Abstract

The exact electromagnetic field in cylindrical cavity with concentric dielectric rod is analyzed. Resonant frequency of dielectric loaded cavity is calculated by analyzing the characteristic equation. The characteristic equation is solved by using the ContourPlot graph of Mathematica. As the result of comparing calculation value and experimental value of resonant frequencies, we know that the field representation of traveling mode is exact.

동심 유전체 봉이 삽입된 원통형 공진기 내부의 전자계에 대한 정확한 해석을 하였다. 유전체가 삽입된 공진기의 공진주파수는 특성 방정식의 해석에 의해 계산된다. 특성 방정식의 해를 Mathematica의 ContourPlot graph를 이용하여 구하였다. 공진주파수의 계산 값과 실험 값을 비교하여 공진기 내부의 전자계 표현을 진행모드 표현으로 가정하였을 때 정확한 공진주파수 값을 계산할 수 있음을 확인하였다.

Keywords

References

  1. IEEE Trans. on Microwave Theory and Techniques v.MTT-14 no.9 Microwave measurement of High-Dielectric-Constant Materials S. B. Cohn;K. C. Kelly
  2. IEE Proceedings v.137 no.6 Computation of Q-factors of dielectric-loaded cylindrical cavity resonators M. M. Taheri;D. M. Syahkal
  3. IEEE Trans. on Microwave Theory and Techniques v.MTT-33 no.7 Microwave Measurement of Dielectric Properties of Low-Loss Materials by the Dielectric Rod Resonator Method Y. Kobayashi;M. Katoh
  4. Dielectric Resonators D. Kajfez;P. Guillon
  5. IEEE Transaction on Applied Superconductivity Use of a Dielectric-loaded Cylindrical Cavity in Measurements of the Microwave Surface Resistances of High-Tc Superconducting Thin Films S. Y. Lee(et al.)
  6. IEEE Trans. Microwave Theory Tech. v.MTT-31 Modes in dielectric-loaded waveguides and resonators K. A. Zaki;A. E. Atia
  7. Microwave Engineering D. M. Pozar
  8. Time Harmonic Electromagnetic Fields R. F. Harrington