[1] Brooke G, Kharadly M. Scattering by abrupt discontinuities on planar dielectric waveguides. IEEE Trans. Microwave Theory Tech., 1982, 30(4): 760
[2] Geshiro M, Kaihara Y, Sawa S. Analysis of wave propagation in anisotropic film waveguides with bent optical axes. IEEE Trans. Microwave Theory Tech., 1984, 32(2): 339:[3]Marcuse D. Bending losses of the asymmetric slab waveguide. Bell Sys. Tech.J., 1971, 50: 2251
[3] Feix N, Lalande M , Jecko B. Harmonical characterization of a microstrip bend via the finite difference time domain method. IEEE Trans. Microwave Theory Tech., 1992, 40(5): 955
[4] Hese J, Zutter D. Modeling of discontinuities in general coaxial waveguide structures by the FDTD-method. IEEE Trans. Microwave Theory Tech., 1992, 40(3): 547
[5] Peng S, Xu S, Schwering F. Transitions in open millimetre-wave waveguides. IEE Proceedings Part.H, 1989, 136(3): 487
[6] Koshiba M, Inoue K. Simple and efficient finiteelement analysis of microwave and optical waveguides. IEEE Trans. Microwave Theory Tech. 1992, 40(2): 371
[7] Jin J. The Finite Element Method in Elecromagnetics. New York: John Wiley & Sons, Inc. 1993.
[8] Xu S, Sheng X. Coupling of edge-element and modematching for multistep dielectric discontinuity in guiding structures. IEEE Trans. Microwave Theory Tech., 1997, 45(2): 284