Study of thermal fluctuation of condenser parameters when implementing intermediate frequency filters on operational amplifiers

Bandpass filters are an effective means of separating an intermediate frequency (IF) signal. IF bandpass filters based on operational amplifiers (OA) are simple to design, have small dimensions (due to the need for a minimum of components), which greatly facilitates their practical implementation. The subject of research in this work is the aspects of the practical implementation of active filters for working with a frequency converter, taking into account the influence of the temperature drift of the op-amp components.