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Simplified Prediction of Peak Power-Handling Capability for Stepped-Impedance Low-Pass Filters

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2 Author(s)
De Paolis, F. ; Eur. Space Agency-Eur. Space Res. & Technol. Centre (ESA-ESTEC), Noordwijk, Netherlands ; Frezza, F.

Novel explicit formulas are introduced in this paper for the prediction of peak voltages and amplification factors in stepped-impedance coaxial and waveguide low-pass filters. Based on a coupling-matrix model and a simplified electromagnetic (EM) formulation, voltages in the filter critical areas are calculated analytically, without need of any 3-D EM simulations. Only filter prototype parameters are required in this method, which is therefore fast and considerably simplifies the power-handling analysis of corrugated filtering structures. The accuracy of the formulas is verified via commercial finite-difference time-domain software and multipactor breakdown test.

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:61 ,  Issue: 3 )