Transmission Characteristics on Dimensional Tolerances of Millimeter-Wave Rectangular Waveguides

This paper presents the influence on the transmission characteristics of dimensional tolerances of rectangular wave-guides usually used as a low-loss transmission line in the millimeter-wave band. We derived the Green's functions of the waveguide with eigenfunction expansion method. The reflection coefficient of the waveguide with a post is calcu-lated by using internal impedance in order to investigate the influence of dimensional tolerances of the waveguide. In order to check the validity of the theoretical analysis, the calculated reflection coefficients are compared with th