kicad/pcb_calculator/transline/twistedpair.h

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/*
* twistedpair.h - twisted pair class definition
*
* Copyright (C) 2011 Michael Margraf <michael.margraf@alumni.tu-berlin.de>
* Modified for Kicad: 2015 jean-pierre.charras
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this package; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __TWISTEDPAIR_H
#define __TWISTEDPAIR_H
class TWISTEDPAIR : public TRANSLINE
{
public: TWISTEDPAIR();
private:
double din; // Inner diameter of conductor
double dout; // Outer diameter of insulator
double twists; // Twists per length
double er_env; // dielectric constant of environment*/
double len; // Length of cable
double Z0; // characteristic impedance
double ang_l; // Electrical length in angle
double er_eff; // Effective dielectric constant
double atten_dielectric; // Loss in dielectric (dB)
double atten_cond; // Loss in conductors (dB)
public:
void analyze();
void synthesize();
private:
void calc();
void show_results();
void getProperties();
};
#endif