CAD of Waveguide Low-Pass Filters for Satellite Applications

Corrugated-waveguide low-pass filters are analysed by successive reflection coefficient transformations. The discontinuities are modelled by waveguide equivalent circuits, including interaction of higher order modes. The filter response is determined by TEm0-transfer functions (m=1,2...) each of which can be calculated independently. Implementing this method in an optimization routine allows complete computer-aided design according to given specifications.