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Evanescent Mode Cylindrical Cavity Filter

Application ID: 12015

An evanescent-mode cavity filter is resonant at a frequency lower than its original fundamental mode frequency. Evanescent mode resonance can be realized by creating a discontinuity or reactance inside the cavity.

The basic model was modified by the addition of a metal box at either end representing a housing. Inside a dielectric substrate and a microstrip line coupled into the cavity.

The electric field distribution shows that the dielectric tube inside the cavity does not distort the distribution significantly.

Ce modèle a été construit avec les éléments suivants:

RF Module