Rotationally symmetric FDTD for wideband performance prediction of TM<inf>01</inf> DR filters
- Publication Type:
- Journal Article
- Citation:
- International Journal of RF and Microwave Computer-Aided Engineering, 2002, 12 (3), pp. 259 - 271
- Issue Date:
- 2002-05-01
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2006006105OK.pdf | 251.05 kB |
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The generalized perfectly matched layer (GPML) coupled with rotationally symmetric (RS)-FDTD method has been utilized to extract the S-parameters for several probe-coupled TM01 dielectric resonator (DR) filters to directly obtain the theoretical wideband spurious performance. The computationally efficient (RS)-FDTD method has also been used to obtain accurate filter parameters for TE01 and TM01 dielectric resonators loaded in cylindrical cavities. The RS-FDTD method combined with digital filtering and the Matrix Pencil technique are used to analyze the resonant frequencies, inter-resonator coupling, and external Q values. When perturbation theory is used with RS-FDTD, accurate values of unloaded Q are obtained.
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