mirror of
https://github.com/ra3xdh/qucs_s
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121 lines
3.6 KiB
C++
121 lines
3.6 KiB
C++
/***************************************************************************
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filter.h
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----------------
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begin : Wed Apr 10 2014
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copyright : (C) 2014 by Vadim Kuznetsov
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email : ra3xdh@gmail.com
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#ifndef FILTER_H
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#define FILTER_H
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#include <QtCore>
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#include <cmath>
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#include <complex>
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static const double pi = 3.1415926535897932384626433832795029; /* pi */
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struct RC_elements {
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int N;
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double R1;
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double R2;
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double R3;
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double R4;
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double R5;
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double R6;
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double C1;
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double C2;
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};
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struct FilterParam {
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double Ap; // Band pass atten.
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double As; // Band stop atten.
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double Fc; // Cutoff frequency
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double Fs; // Stopband freq.
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double Rp; // Passband ripple
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double Kv; // Passband gain
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double Fl; // Lower freq.
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double Fu; // Upper freq.
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double TW; // Band width
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double Q; // Quality factor
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int order;
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};
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class Filter
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{
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public:
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enum FType {HighPass, LowPass, BandPass, BandStop, NoFilter};
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enum FilterFunc {Butterworth, Chebyshev, Cauer, Bessel, InvChebyshev, Legendre, NoFunc, User};
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private:
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void cauerOrderEstim();
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void reformPolesZeros();
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protected:
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QVector< std::complex<float> > Poles;
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QVector< std::complex<float> > Zeros;
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QVector<long double> vec_B; // Transfer function numenator
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QVector<long double> vec_A; // and denominator
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QVector<RC_elements> Sections;
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Filter::FType ftype;
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Filter::FilterFunc ffunc;
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int order;
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double Fc,Kv,Fs,Ap,As,Rp,Fl,Fu,TW,Q,BW,F0;
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int Nr,Nc,Nopamp; // total number of R,C, opamp
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int Nr1,Nc1,Nop1; // number of R,C, opamp per stage
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bool calcButterworth();
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bool calcChebyshev();
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bool calcInvChebyshev();
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bool calcCauer();
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bool calcBessel();
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bool calcLegendre();
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bool calcUserTrFunc();
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bool checkRCL(); // Checks RCL values. Are one of them NaN or not?
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void createFirstOrderComponentsHPF(QString &s,RC_elements stage, int dx);
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void createFirstOrderComponentsLPF(QString &s,RC_elements stage, int dx);
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void createFirstOrderWires(QString &s, int dx, int y);
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double autoscaleCapacitor(double C, QString &suffix);
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virtual void calcHighPass();
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virtual void calcLowPass();
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virtual void calcBandPass();
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virtual void calcBandStop();
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virtual void createHighPassSchematic(QString &s);
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virtual void createLowPassSchematic(QString &s);
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virtual void createBandPassSchematic(QString &s);
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virtual void createBandStopSchematic(QString &s);
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public:
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Filter(Filter::FilterFunc ffunc_, Filter::FType type_, FilterParam par);
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virtual ~Filter();
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void calcFirstOrder();
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void createPartList(QStringList &lst);
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void createPolesZerosList(QStringList &lst);
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virtual void createSchematic(QString &s);
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virtual bool calcFilter();
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void set_TrFunc(QVector<long double> a, QVector<long double> b);
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};
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#endif // FILTER_H
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