Voltage-current definition of impedance of single-ridge waveguide

An essential feature of any waveguide is its three classic definitions of i mpedance, The purpose of this paper is to provide some calculations on the voltage-current definition of impedance in single ridge waveguide using the finite element method. The current paths coincide with either the top and side walls or the ridge and trough walls. The decomposition of the waveguid e walls coincide with the positions at which the polarity of the electric f ield reverses on its interior contour. The power-voltage definition of impe dance is also evaluated for completeness.