LP filters with monotone decreasing response

Zadatak ovo diplomskog rada bio je projektirati i analizirati nisko propusne filtre s monotono opadajućim odzivom četvrtog reda preko Butterworthove i Besselove aproksimacije. Analiza je vršena programskim paketom Matlab i simulacijskim programom LTSpice. Nakon uspješne analize izrađeni su laboratorijski modeli filtra na ispitnoj pločici i ispitana je njegova ispravnost osciloskopom i funkcijskim generatorom. Preciznija ispravnost ispitana je mrežnim analizatorom kojim je potvrđena ispravnost filtarskim sklopova i zadatak je uspješno izvršen.The task of this master degree graduate thesis was to design and analyze 4th order low filters with monotone decreasing response through Butterworth's and Bessel's approximations. The analysis was done with Matlab mathematic program toolbox and with simulation program toolbox LTSpice. Prototype of filters were made on protoboard after the successful analysis, and their correctness was tested by the oscilloscope and the function generator. More precise accuracy was tested by a network analyzer which confirmed the filters correctness, and the task was successfully done