Qucs-core
0.0.19
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00001 /* 00002 * biastee.cpp - bias T class implementation 00003 * 00004 * Copyright (C) 2003, 2004, 2005, 2008 Stefan Jahn <stefan@lkcc.org> 00005 * 00006 * This is free software; you can redistribute it and/or modify 00007 * it under the terms of the GNU General Public License as published by 00008 * the Free Software Foundation; either version 2, or (at your option) 00009 * any later version. 00010 * 00011 * This software is distributed in the hope that it will be useful, 00012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00014 * GNU General Public License for more details. 00015 * 00016 * You should have received a copy of the GNU General Public License 00017 * along with this package; see the file COPYING. If not, write to 00018 * the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, 00019 * Boston, MA 02110-1301, USA. 00020 * 00021 * $Id$ 00022 * 00023 */ 00024 00025 #if HAVE_CONFIG_H 00026 # include <config.h> 00027 #endif 00028 00029 #include "component.h" 00030 #include "biastee.h" 00031 00032 using namespace qucs; 00033 00034 biastee::biastee () : circuit (3) { 00035 type = CIR_BIASTEE; 00036 } 00037 00038 void biastee::initSP (void) { 00039 allocMatrixS (); 00040 setS (NODE_1, NODE_1, 0.0); 00041 setS (NODE_1, NODE_2, 1.0); 00042 setS (NODE_1, NODE_3, 0.0); 00043 setS (NODE_2, NODE_1, 1.0); 00044 setS (NODE_2, NODE_2, 0.0); 00045 setS (NODE_2, NODE_3, 0.0); 00046 setS (NODE_3, NODE_1, 0.0); 00047 setS (NODE_3, NODE_2, 0.0); 00048 setS (NODE_3, NODE_3, 1.0); 00049 } 00050 00051 void biastee::initDC (void) { 00052 setISource (false); 00053 setVoltageSources (1); 00054 allocMatrixMNA (); 00055 clearB (); 00056 clearC (); 00057 voltageSource (VSRC_1, NODE_2, NODE_3); 00058 } 00059 00060 void biastee::initAC (void) { 00061 setISource (false); 00062 setVoltageSources (1); 00063 allocMatrixMNA (); 00064 clearB (); 00065 clearC (); 00066 voltageSource (VSRC_1, NODE_2, NODE_1); 00067 } 00068 00069 #define fState 0 // flux state 00070 #define vState 1 // voltage state 00071 #define qState 2 // charge state 00072 #define cState 3 // current state 00073 00074 void biastee::initTR (void) { 00075 initDC (); 00076 setStates (4); 00077 setISource (true); 00078 } 00079 00080 void biastee::calcTR (nr_double_t) { 00081 nr_double_t l = getPropertyDouble ("L"); 00082 nr_double_t c = getPropertyDouble ("C"); 00083 nr_double_t g, r, v; 00084 nr_double_t i = real (getJ (VSRC_1)); 00085 00086 setState (fState, i * l); 00087 integrate (fState, l, r, v); 00088 setD (VSRC_1, VSRC_1, -r); 00089 setE (VSRC_1, v); 00090 00091 v = real (getV (NODE_1) - getV (NODE_2)); 00092 setState (qState, c * v); 00093 integrate (qState, c, g, i); 00094 setY (NODE_1, NODE_1, +g); setY (NODE_2, NODE_2, +g); 00095 setY (NODE_1, NODE_2, -g); setY (NODE_2, NODE_1, -g); 00096 setI (NODE_1 , -i); 00097 setI (NODE_2 , +i); 00098 } 00099 00100 // properties 00101 PROP_REQ [] = { 00102 PROP_NO_PROP }; 00103 PROP_OPT [] = { 00104 { "C", PROP_REAL, { 1e-6, PROP_NO_STR }, PROP_POS_RANGE }, 00105 { "L", PROP_REAL, { 1e-6, PROP_NO_STR }, PROP_POS_RANGE }, 00106 PROP_NO_PROP }; 00107 struct define_t biastee::cirdef = 00108 { "BiasT", 3, PROP_COMPONENT, PROP_NO_SUBSTRATE, PROP_LINEAR, PROP_DEF };