130 lines
4.1 KiB
Matlab
130 lines
4.1 KiB
Matlab
function [CSX, port] = AddLumpedPort( CSX, prio, portnr, R, start, stop, dir, excite, varargin )
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% [CSX, port] = AddLumpedPort( CSX, prio, portnr, R, start, stop, dir, excite, varargin )
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%
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% Add a lumped port as an excitation.
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%
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% A lumped port consists of an excitation, a lumped resistor, a voltage and
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% current probe.
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%
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% CSX: CSX-object created by InitCSX()
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% prio: priority for substrate and probe boxes
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% portnr: (integer) number of the port
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% R: internal resistance of the port (lumped element)
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% start: 3D start rowvector for port definition
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% stop: 3D end rowvector for port definition
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% dir: direction/amplitude of port (e.g.: [1 0 0], [0 1 0] or [0 0 1])
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% excite (optional): if true, the port will be switched on (see AddExcitation())
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% Note: for legacy support a string will be accepted
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% V_Probe_Weight: additional weigth for the voltage probes
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% I_Probe_Weight: additional weigth for the current probes
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% optional (key/values):
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% 'PortNamePrefix': an prefix to the port name
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% varargin (optional): additional excitations options, see also AddExcitation
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%
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% example:
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% start = [0 -width/2 0];
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% stop = [0 width/2 height];
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% [CSX] = AddLumpedPort(CSX, 5 ,1 , 50, start, stop, [0 0 1], true);
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% %this defines an active lumped port in z-direction with a 50 Ohm port impedence
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%
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% openEMS matlab interface
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% -----------------------
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% Sebastian Held <sebastian.held@gmx.de>
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% Jun 1 2010
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% Thorsten Liebig
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% Jul 13 2011
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%
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% See also InitCSX AddExcitation
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% check dir
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port.type='Lumped';
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port.nr=portnr;
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V_Probe_Weight = 1;
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I_Probe_Weight = 1;
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if (dir(1)~=0) && (dir(2) == 0) && (dir(3)==0)
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n_dir = 1;
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elseif (dir(1)==0) && (dir(2) ~= 0) && (dir(3)==0)
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n_dir = 2;
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elseif (dir(1)==0) && (dir(2) == 0) && (dir(3)~=0)
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n_dir = 3;
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else
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error 'dir must have exactly one component ~= 0'
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end
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PortNamePrefix = '';
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varargin_tmp = varargin;
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for n=1:2:numel(varargin_tmp)
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if strcmpi('PortNamePrefix',varargin_tmp{n})
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PortNamePrefix = varargin_tmp{n+1};
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varargin([n n+1]) = [];
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elseif strcmpi('V_Probe_Weight',varargin_tmp{n})
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V_Probe_Weight = varargin_tmp{n+1};
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elseif strcmpi('I_Probe_Weight',varargin_tmp{n})
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I_Probe_Weight = varargin_tmp{n+1};
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end
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end
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if (stop(n_dir)==start(n_dir))
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error 'start/stop in excitation direction in must not be equal'
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end
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if (stop(n_dir)-start(n_dir)) > 0
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direction = +1;
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else
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direction = -1;
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end
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port.direction = direction;
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port.Feed_R = R;
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if (R>0 && (~isinf(R)))
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CSX = AddLumpedElement(CSX,[PortNamePrefix 'port_resist_' int2str(portnr)], n_dir-1, 'Caps', 1, 'R', R);
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CSX = AddBox(CSX,[PortNamePrefix 'port_resist_' int2str(portnr)], prio, start, stop);
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elseif (R<=0)
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CSX = AddMetal(CSX,[PortNamePrefix 'port_resist_' int2str(portnr)]);
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CSX = AddBox(CSX,[PortNamePrefix 'port_resist_' int2str(portnr)], prio, start, stop);
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end
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if (nargin < 8)
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excite = false;
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end
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% legacy support, will be removed at some point
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if ischar(excite)
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warning('CSXCAD:AddLumpedPort','depreceated: a string as excite option is no longer supported and will be removed in the future, please use true or false');
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if ~isempty(excite)
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excite = true;
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else
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excite = false;
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end
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end
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port.excite = excite;
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% create excitation
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if (excite)
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CSX = AddExcitation( CSX, [PortNamePrefix 'port_excite_' num2str(portnr)], 0, -dir*direction, varargin{:});
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CSX = AddBox( CSX, [PortNamePrefix 'port_excite_' num2str(portnr)], prio, start, stop );
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end
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u_start = 0.5*(start + stop);
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u_stop = 0.5*(start + stop);
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u_start(n_dir) = start(n_dir);
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u_stop(n_dir) = stop(n_dir);
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port.U_filename = [PortNamePrefix 'port_ut' int2str(portnr)];
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CSX = AddProbe(CSX, port.U_filename, 0, 'weight', -direction*V_Probe_Weight);
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CSX = AddBox(CSX, port.U_filename, prio, u_start, u_stop);
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i_start = start;
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i_stop = stop;
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i_start(n_dir) = 0.5*(start(n_dir)+stop(n_dir));
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i_stop(n_dir) = 0.5*(start(n_dir)+stop(n_dir));
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port.I_filename = [PortNamePrefix 'port_it' int2str(portnr)];
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CSX = AddProbe(CSX, port.I_filename, 1, 'weight', direction*I_Probe_Weight, 'NormDir', n_dir-1);
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CSX = AddBox(CSX, port.I_filename, prio, i_start, i_stop);
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