ARC filters with modern active elements

C­lem t©to prce je porovnat na p­kladu doln­ a horn­ propusti jejich vlastnosti rznmi metodami synt©zy. V prci jsou nejd­ve rozebrny vlastnosti a charakteristiky filtr, realizace filtr vy­ch d s vyuit­m normovan© doln­ propusti a aproximac­ penosov© funkce, kter© jsou nslednÄ vyuity pi nvrhu. Dle jsou v prci tak© rozebrny obvody, ktermi lze nahradit c­vky v obvodu a to jak p­mo, tak i nep­mo pomoc­ Brutonovy transformace. Praktick Äst prce se zabv samotnm nvrhem doln­ a horn­ propusti dvÄma metodami synt©zy, vbÄr vhodn©ho reln©ho operaÄn­ho zesilovaÄe pro dan kmitoÄet. V posledn­ Ästi se jedn o realizaci vzork obvod a mÄen­ch skuteÄnch vlastnost­.The aim of this project is to compare the characteristics of low pass and high pass filters designed by various methods of synthesis. Firstly, the attributes and characteristics of filters and realisations of higher order filters using normed low pass filter and approximation of gain-magnitude frequency response are described and then used in application. The circuits that substitute coils directly or undirectly using the Bruton transform are discussed next. The practical part of project concerns of design of high pass and low pass itself, using two methods of synthesis. Proper real operational amplifier has to be choose for used frequency. In the final part of work the designed circuits were realized and their characteristics were measured and examined.