Microstrip filter
The present example considers a microstrip line filter.
Microstrip line filter.
Strip dimmensions.
Microstrip line filter project in QW-Modeller.
Geometry of the microstrip line filter consists of base substrate with 0.795 mm height, made of dielectric material with relative permittivity equal to 2.2, and infinitely thin (0 mm in thickness) strips.
Absorbing boundary conditions are used along upper and lower substrate edges, and at the top of the structure.

The S-Parameters postprocessing is set from 0.2 GHz to 20 GHz with the frequency step of 0.1 GHz.
S-Parameters postprocessing configuration dialogue.
Reflection and transmission characteristics of the microstrip filter.
Electric field distribution at 5 GHz (passband).
Electric field distribution at 7.5 GHz (stopband).
Surface current at 5 GHz (passband) and at 7.5 GHz (stopband).