應(yīng)用FDTD/MP方法計(jì)算波導(dǎo)加載諧振器的復(fù)諧振頻率
COMPUTATION OF THE COMPLEX RESONANT FREQUENCY OF WAVEGUIDE LOADED CAVITIES USING FDTD COUPLED WITH MATRIX PENCIL METHOD
-
摘要: 應(yīng)用FDTD結(jié)合MP的方法計(jì)算了波導(dǎo)加載諧振器的諧振頻率和品質(zhì)因數(shù)。與FDTD/DFT方法比較,這種方法減少了對(duì)FDTD運(yùn)行時(shí)間的需求,并且提高了數(shù)值精度。與FDTD/Prony方法比較,其優(yōu)點(diǎn)是計(jì)算效率高,對(duì)噪聲的敏感小。文中以計(jì)算實(shí)例說(shuō)明了算法的有效性。
-
關(guān)鍵詞:
- 波導(dǎo)加載諧振腔; 諧振腔; FDTD/MP
Abstract: FDTD coupled with Matrix Pencil method was applied for computation of the resonant frequency and external quality factor of waveguide loaded cavities. With the new method, the computing time is reduced considerably and the accuracy of numerical results are improved compared to the combined approach of FDTD and DFT. Compared with conventional used Prony s method, the advantages of MP technique are its more computational efficiency and less sensitivity to noise. Numerical results of a 3-D rectangular cavity are given for verification of the method. -
Tatsuya K. A simple method using MAFIA to calculate external Q values of waveguide-loaded cavities, KEK report 89-4, June 1989.[2]Norman M K, Yu D U L. Computer determination of the external (a and resonant frequency of waveguide loaded cavities, Particle Accelerators, 1990, 34(5): 231-250.[3]Jifu Ma, Yaogen Ding, Wenmiao Song. Characterizing waveguide loaded cavities using finite-[4]difference time-domain method, in Proc. of 1997 Asia Pacific Microwave Conference, HongKong: 1997, (1): 825-828.[5]Pereda J A, Vielva L A, et al. Computation of resonant frequencies and quality factors of open dielectric resonators by a combination of the FDTD and Pronys method, IEEE Microwave Guided Wave Lett., 1992, 2(2): 431-433.[6]Ritter J, Arndt F. Efficient FDTD/Matrix-Pencil method for the full-wave scattering parameter[7]analysis of waveguiding structures, IEEE Trans. Microwave Theory Tech., 1996, 44(8): 2450-2456.[8]Hua Y, Sarkar T K. Matrix pencil method for estimating parameters of exponentially damped/undamped sinusoids in noise, IEEE Trans. on ASSP, 1990, ASSP-38(6): 814-824.[9]Berenger J P. A perfectly matched layer for the absorption of electromagnetic waves, J[J].Compu. Phy.1994, 114(1):185-200 -
計(jì)量
- 文章訪問(wèn)數(shù): 2653
- HTML全文瀏覽量: 131
- PDF下載量: 458
- 被引次數(shù): 0
下載:
