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QUCS-src
qucs-0.0.16
qucs-core
src
components
inoise.cpp
Go to the documentation of this file.
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/*
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* inoise.cpp - noise current source class implementation
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*
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* Copyright (C) 2004, 2005, 2008 Stefan Jahn <stefan@lkcc.org>
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*
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* This 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, or (at your option)
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* any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this package; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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* $Id: inoise.cpp 1825 2011-03-11 20:42:14Z ela $
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*
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*/
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#if HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include "
component.h
"
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#include "
inoise.h
"
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inoise::inoise () :
circuit
(2) {
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type
=
CIR_INOISE
;
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}
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void
inoise::initSP
(
void
) {
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allocMatrixS
();
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setS
(
NODE_1
,
NODE_1
, 1.0);
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setS
(
NODE_1
,
NODE_2
, 0.0);
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setS
(
NODE_2
,
NODE_1
, 0.0);
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setS
(
NODE_2
,
NODE_2
, 1.0);
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}
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void
inoise::calcNoiseSP
(nr_double_t frequency) {
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nr_double_t
i
=
getPropertyDouble
(
"i"
);
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nr_double_t
e
=
getPropertyDouble
(
"e"
);
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nr_double_t
c
=
getPropertyDouble
(
"c"
);
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nr_double_t a =
getPropertyDouble
(
"a"
);
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nr_double_t ipsd = i / (a + c *
pow
(frequency, e)) /
kB
/
T0
*
z0
;
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setN
(
NODE_1
,
NODE_1
, +ipsd);
setN
(
NODE_2
,
NODE_2
, +ipsd);
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setN
(
NODE_1
,
NODE_2
, -ipsd);
setN
(
NODE_2
,
NODE_1
, -ipsd);
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}
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void
inoise::calcNoiseAC
(nr_double_t frequency) {
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nr_double_t
i
=
getPropertyDouble
(
"i"
);
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nr_double_t
e
=
getPropertyDouble
(
"e"
);
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nr_double_t
c
=
getPropertyDouble
(
"c"
);
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nr_double_t a =
getPropertyDouble
(
"a"
);
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nr_double_t ipsd = i / (a + c *
pow
(frequency, e)) /
kB
/
T0
;
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setN
(
NODE_1
,
NODE_1
, +ipsd);
setN
(
NODE_2
,
NODE_2
, +ipsd);
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setN
(
NODE_1
,
NODE_2
, -ipsd);
setN
(
NODE_2
,
NODE_1
, -ipsd);
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}
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// properties
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PROP_REQ
[] = {
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{
"i"
,
PROP_REAL
, { 1
e
-6,
PROP_NO_STR
},
PROP_POS_RANGE
},
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PROP_NO_PROP
};
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PROP_OPT
[] = {
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{
"a"
,
PROP_REAL
, { 0,
PROP_NO_STR
},
PROP_POS_RANGE
},
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{
"c"
,
PROP_REAL
, { 1,
PROP_NO_STR
},
PROP_POS_RANGE
},
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{
"e"
,
PROP_REAL
, { 0,
PROP_NO_STR
},
PROP_POS_RANGE
},
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PROP_NO_PROP
};
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struct
define_t
inoise
::cirdef =
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{
"Inoise"
, 2,
PROP_COMPONENT
,
PROP_NO_SUBSTRATE
,
PROP_LINEAR
,
PROP_DEF
};
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