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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2010-04-12
A New Hybrid mm /Compact 2-d Fdfd Method for Rectangular Ridged Waveguide Discontinuities
By
Wei Zhao,

    Dr. Wei Zhao

    Xidian University

    China

    Homepage

Yong-Jiu Zhao,

    Dr. Yong-Jiu Zhao

    College of Information Science and Technology

    Nanjing University of Aeronautics and Astronautics

    China

    Homepage

Hong-Wei Deng,

    Dr. Hong-Wei Deng

    College of Information Science and Technology

    Nanjing University of Aeronautics and Astronautics

    China

    Homepage

Duanwei Zhang,

    Dr. Duanwei Zhang

    Nanjing University of Aeronautics and Astronautics

    China

    Homepage

Bing Liu

    Dr. Bing Liu

    College of Information Science and Technology

    Nanjing University of Aeronautics and Astronautics

    China

    Homepage

Progress In Electromagnetics Research M, Vol. 12, 29-38, 2010
doi:10.2528/PIERM10011902 | Google Scholar

Abstract
A hybrid mode-matching/compact 2-D finite-difference frequency-domain (MM/compact 2-D FDFD) method is proposed for the analysis of rectangular ridged waveguide discontinuities. In order to apply MM technique, mode spectrum of the ridged waveguide is determined by an improved compact 2-D FDFD method with only two transverse field components at the cutoff frequencies which lead to two independent sets of real symmetric eigenvalue problems for TE and TM modes. Solving these two separate eigenvalue equations, cutoff wave numbers and discrete mode field functions can be obtained respectively from eigenvalues and eigenvectors. Finally, the generalized scattering matrix (GSM) of the rectangular-ridged waveguide step discontinuity can be easily calculated through the transverse field matching procedure. The method is demonstrated at the examples of two waveguide structures, and results are shown to be in excellent agreement with those by the commercial CAD software HFSS.
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Citation
Wei Zhao, Yong-Jiu Zhao, Hong-Wei Deng, Duanwei Zhang, and Bing Liu, "A New Hybrid mm /Compact 2-d Fdfd Method for Rectangular Ridged Waveguide Discontinuities," Progress In Electromagnetics Research M, Vol. 12, 29-38, 2010.
doi:10.2528/PIERM10011902
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