Návrh a realizace aktivních frekvenčních filtrů s využitím topologie Sallen–Key

Abstract

This thesis deals with the design of active frequency filters using the Sallen-Key topology. The theoretical part describes the basic knowledge about active frequency filters. Gradually, you will be introduced to their basic properties, parameters, approximations and principles on which the designs are built. The conditions and circuit calculation relations for the design of particular types of filters are also given. The aim of thesis work was to design bandpass and bandstop filters according to the parameters specified by the supervisor. The thesis presents proposals of bandpass and bandstop 4th order for Bessel, Butterworth and Chebyshev approximation. Their functionality is verified in the program OrCAD Capture CIS 17.4. Subsequently, these circuits for the Butterworth approximation are implemented in a non-solderable contact field. At the end of the thesis there is a comparison of simulated and experimental results.