National Taiwan University DEPT ELECT ENGNYu, Cheng-ChehCheng-ChehYuChu, Tah-HsiungTah-HsiungChu2006-11-142018-07-062006-11-142018-07-061990-09http://ntur.lib.ntu.edu.tw//handle/246246/200611150121026In this paper, the calculation of eigenvalues including propagation constants and cutoff wavelengths of LSE,, and LSM,, modes in homogeneous and inhomogeneous lossless dielectric-slabloaded rectangular waveguides using a modified variation-iteration method is presented. The initial eigenvalues used in the iteration are selected on the basis of a physical consideration. Numerical examples show are capable of efficiently calculating propagation constants and cutoff wavelengths of LSE,, and LSM,, modes given values of the free-space propagation constant and the lower bound of the cutoff wavelength, respectively.application/pdf577626 bytesapplication/pdfzh-TWjournal articlehttp://ntur.lib.ntu.edu.tw/bitstream/246246/200611150121026/1/10564.pdf