µWave WizardTM Mician Top Use CasesMay 7, 2020 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved. © FOLDED COMBLINE FILTER Challenge • Rectangular waveguide filters are frequently used in current space communications or at high frequencies even on PCBs. At lower frequencies the waveguide filters are getting very bulky. Beside microstrip filters with the lack of power handling, combline filters are very common for filter applications. But the synthesis and optimization is very time consuming in case of solving such filters by full 3D-FEM for example. Solution • The compact filter itself is in µWave WizardTM a simple cascading of single parameterized resonator elements with partial height posts. All resonators are connected with higher order modes which lea

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