Appropriation of tolerances at designing hairpin microstrip low-pass filters

The investigation of tolerances limits for the microstrip hairpin low-pass filter´s geometrical parameters is carried out. Method of calculation of the filter circuit is based on a quasi-dynamic approximations and quasi-static analysis of topology discontinuities. Interval models were used for the synthesis of tolerances. Optimization of tolerances for the filter´s geometrical parameters is made by introducing of weight coefficients.