Context and objective
This analog-electronics synthesis project studies second-order active filters using the Rauch topology. Its objective is to cover the three main responses—low-pass, high-pass and band-pass—from theoretical design through simulation.
Architecture or method
Each filter combines resistors, capacitors and an active element in a Rauch structure suited to the required response. Analysis covers the transfer function, frequency response and time-domain behavior. Proteus is used to build the schematics and compare simulated behavior with theoretical specifications.
Implementation
The three structures are sized separately and integrated into Proteus projects. For each one, simulation is used to observe the pass region and out-of-band attenuation and, for the band-pass filter, bandwidth and selectivity. TP2 FILTRAGE ACTIF.pdsprj, testélectronique.pdsprj and TEST3.pdsprj retain the circuits and experiments.
Results and deliverables
The “Electronics Project” report presents diagrams, examples and analyses for low-pass, high-pass and band-pass filters. The associated Proteus projects preserve the simulated circuits and make the studied designs reproducible.
Lessons learned
The work connects the choice of an analog topology to an expected frequency response. It also shows that simulation should be interpreted in both frequency and time domains and compared with the filter’s theoretical model.