Analysis of Leap-frog Filter in the Programme NAF
Martin Friedl · 2013
The method of design of ARC fllters with the help of non-cascade realization Leap-Frog, which combines qualities of block realizations and realizations concerning ladder RLC fllters, is considerably di-cult. The programme for the complete synthesis of these ARC fllters was created. This article describes the complete description of the programme NAF. It includes the correct depiction of the set values of RLC fllters concerned with required user's parameters. The user's parameters can be for instance fllters LP, HP, BP, and BR, the type of approximation with or without zero transfers and the kind of fllter conflguration T or PI. From the following depiction of RLC fllters the programme already realizes ARC depiction of Leap-Frog fllter, even with certain values of individual elements. However, the most important part for the design of this programme is the depiction of modular characteristics for already deflned outputs of certain fllters, with the regard to the following setting of dynamic ratios inside the fllter including particular real OAs. With the help of depiction of module characteristics in individual fllter outputs, it is not problematic to change norms of particular elements' values so that the individual transfers from the input to the output of the fllter would be the same for their maximums. The programme should serve mainly to bigger use of these circuits in practice, when a user can compare several ARC fllter designs designed in difierent ways and he can judge which of the stated applications would be the most suitable.