한국정보전자통신기술학회논문지 (The Journal of Korea Institute of Information, Electronics, and Communication Technology)

  • 제9권6호
  • /
  • Pages.630-636
  • /
  • 2016
  • /
  • 2005-081X(pISSN)
  • /
  • 2288-9302(eISSN)
한국정보전자통신기술학회 (Korea Information Electronic Communication Technology)
권호 표지

Triple-Mode Characteristics of Cylindrical Cavity Loading a Cylindrical Dielectric Resonator

  • 투고 : 2016.12.09
  • 심사 : 2016.12.25
  • 발행 : 2016.12.30
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

In this paper, a novel triple-mode cavity structure, designed for compactness and operating at 850 MHz, is analyzed. A cylindrical dielectric resonator is loaded into a metallic cylindrical cavity. Previous study has been focused on the analysis of the cylindrical dielectric resonator, but in this paper, the effect of the cylindrical metallic cavity has been analyzed. Enclosing the dielectric resonator inside the metallic cavity increases the resonant frequency of the dielectric resonator; however, this increases the quality factor and introduces the possibility of installing coupling screws. The principle of generation of triple-mode was investigated by parametric analysis. The generated triple-mode is TE011 mode and two orthogonally generated HEM121 modes. By adjusting the radius of the dielectric resonator, the height of the dielectric resonator, or the radius of the cylindrical metallic cavity, three modes could be coincided. However, the height of the metallic cavity keeps three modes separated. The mode characteristics of the proposed cavity are analyzed using a full-wave electromagnetic (EM) simulation. The proposed triple-mode cavity could be developed to triple-mode filter using a coupling screw, and the commercial application for the miniaturized filter below 1 GHz could be expected.

키워드

참고문헌

  1. X. Zhang, Q. Wang, H. Li, and R. Liu, "Evanescent mode compact waveguide filter," in International Conference on Microwave and Millimeter Wave Technology, Nanjing, China, pp. 323-325, Apr. 2008.
  2. K. Wakino, T. Nishikawa, T. Ishikawa, "Miniaturization Technologies of Dielectric Resonator Filters for Mobile Communications," IEEE Trans. Microwave Theory and Techniques, vol. 42, no. 7, pp. 1295-1300, Jul. 1994. https://doi.org/10.1109/22.299721
  3. I. Awai, "Artificial Dielectric Resonators for Miniaturized Filters," Microwave Magazine, vol. 9, no. 5, pp. 55-64, Oct. 2008 https://doi.org/10.1109/MMM.2008.927709
  4. M. Nosrati, M. Mirzaee, "Compact Wideb and Microstrip Bandpass Filter Using Quasi-Spiral Loaded Multiple-Mode Resonator," IEEE Microwave and Wireless Components Letters , vol. 20, no. 11, pp. 607-609, Sep. 2010. https://doi.org/10.1109/LMWC.2010.2068570
  5. H. John, L. Wenny C, "Evanescent mode filter: design and implementation," Microwave Journal, vol. 32, no. 1, pp. 121-124, Jan. 1989.
  6. X.-C. Zhu, W. Hong, K. Wu, H.-J. Tang, and Z.-C. Hao, "Design and implementation of a triple-mode planar filter," IEEE Microwave and Wireless Components Letters , vol. 23, no. 5, pp. 243-245, May 2013. https://doi.org/10.1109/LMWC.2013.2253313
  7. C. Jin, and Z. Shen, "Compact triple-mode filter based on quarter-mode substrate integrated waveguide," IEEE Trans. Microwave Theory and Techniques, vol. 62, no. 1, pp. 37-45, Jan. 2014. https://doi.org/10.1109/TMTT.2013.2293128
  8. ANSYS High Frequency Structure Simulator (HFSS), version 15.0; 2015.
  9. X. Di, A.W. Gilsson, K.A. Michalski, "Analysis of a dielectric resonator antenna in a cylindrical conducting cavity: HEM modes," IEE Proceedings-Microwaves, Ant enna and Propagation, vol. 141, no. 1, pp. 8-14, 1994. https://doi.org/10.1049/ip-map:19949773