diff --git a/matlab/examples/microstrip/MSL_Losses.m b/matlab/examples/microstrip/MSL_Losses.m
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+%
+% examples / microstrip / MSL_Losses
+%
+% This example demonstrates how to model sheet conductor losses
+%
+% Tested with
+%  - Matlab 2011a / Octave 3.4.3
+%  - openEMS v0.0.28
+%
+% (C) 2012 Thorsten Liebig <thorsten.liebig@gmx.de>
+
+close all
+clear
+clc
+
+%% setup the simulation %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+physical_constants;
+unit = 1e-6; % specify everything in um
+MSL.length = 10000;
+MSL.port_dist = 5000;
+MSL.width = 225;
+MSL.conductivity = 41e6;
+MSL.thickness = 35e-6;
+
+substrate.thickness = 250;
+substrate.epr = 9.8;
+
+f_start = 0e9;
+f_stop  = 25e9;
+
+lambda = c0/f_stop;
+
+%% setup FDTD parameters & excitation function %%%%%%%%%%%%%%%%%%%%%%%%%%%%
+FDTD = InitFDTD(1e6,1e-4);
+FDTD = SetGaussExcite(FDTD,0.5*(f_start+f_stop),0.5*(f_stop-f_start));
+BC   = {'PML_8' 'PML_8' 'PML_8' 'PML_8' 'PEC' 'PML_8'};
+FDTD = SetBoundaryCond( FDTD, BC );
+
+%% setup CSXCAD geometry & mesh %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+CSX = InitCSX();
+resolution = c0/(f_stop*sqrt(substrate.epr))/unit /20;
+mesh.x = SmoothMeshLines( [-MSL.length*0.5-MSL.port_dist 0 MSL.length*0.5+MSL.port_dist], resolution, 1.3 ,0 );
+mesh.y = SmoothMeshLines2( [0 MSL.width/2], resolution/6 , 1.3);
+mesh.y = SmoothMeshLines( [-0.5*lambda/unit -mesh.y mesh.y 0.5*lambda/unit], resolution, 1.4);
+mesh.z = SmoothMeshLines( [linspace(0,substrate.thickness,10) 0.5*lambda/unit], resolution );
+CSX = DefineRectGrid( CSX, unit, mesh );
+
+%% substrate
+CSX = AddMaterial( CSX, 'RO4350B' );
+CSX = SetMaterialProperty( CSX, 'RO4350B', 'Epsilon', substrate.epr );
+start = [mesh.x(1),   mesh.y(1),   0];
+stop  = [mesh.x(end), mesh.y(end), substrate.thickness];
+CSX = AddBox( CSX, 'RO4350B', 0, start, stop );
+
+%% MSL ports and lossy line
+CSX = AddConductingSheet( CSX, 'gold', MSL.conductivity, MSL.thickness );
+portstart = [ mesh.x(1),               -MSL.width/2, substrate.thickness];
+portstop  = [ mesh.x(1)+MSL.port_dist,  MSL.width/2, 0];
+[CSX,portstruct{1}] = AddMSLPort( CSX, 999, 1, 'gold', portstart, portstop, 0, [0 0 -1], 'ExcitePort', 'excite', 'FeedShift', 10*resolution, 'MeasPlaneShift',  MSL.port_dist);
+
+portstart = [mesh.x(end),              -MSL.width/2, substrate.thickness];
+portstop  = [mesh.x(end)-MSL.port_dist, MSL.width/2, 0];
+[CSX,portstruct{2}] = AddMSLPort( CSX, 999, 2, 'gold', portstart, portstop, 0, [0 0 -1], 'MeasPlaneShift',  MSL.port_dist );
+
+start = [mesh.x(1)+MSL.port_dist,   -MSL.width/2, substrate.thickness];
+stop  = [mesh.x(end)-MSL.port_dist,  MSL.width/2, substrate.thickness];
+CSX = AddBox(CSX,'gold',500,start,stop);
+
+%% write/show/run the openEMS compatible xml-file
+Sim_Path = 'tmp';
+Sim_CSX = 'msl.xml';
+
+[status, message, messageid] = rmdir( Sim_Path, 's' ); % clear previous directory
+[status, message, messageid] = mkdir( Sim_Path ); % create empty simulation folder
+
+WriteOpenEMS( [Sim_Path '/' Sim_CSX], FDTD, CSX );
+CSXGeomPlot( [Sim_Path '/' Sim_CSX] );
+RunOpenEMS( Sim_Path, Sim_CSX ,'');
+
+%% post-processing
+close all
+f = linspace( f_start, f_stop, 1601 );
+port{1} = calcPort( portstruct{1}, Sim_Path, f, 'RefImpedance', 50);
+port{2} = calcPort( portstruct{2}, Sim_Path, f, 'RefImpedance', 50);
+
+s11 = port{1}.uf.ref./ port{1}.uf.inc;
+s21 = port{2}.uf.ref./ port{1}.uf.inc;
+
+plot(f/1e9,-20*log10(abs(s21)),'r--','LineWidth',2);
+grid on;
+hold on;
+ylabel('-|S_21| (dB)','Interpreter','None');
+xlabel('frequency (GHz)');
+
+%% plot 35um thickness loss model curve
+% values extracted from http://wcalc.sourceforge.net/cgi-bin/microstrip.cgi
+model.f    = [1   2   2.5 3   4   5   7.5 10   12.5  15   17.5 20   25   ]; % frequency in GHz
+model.loss = [3.0 4.2 4.7 5.2 5.9 6.6 8.1 9.38 10.5  11.5 12.4 13.2 14.65]; % loss in db/m
+
+plot(model.f, model.loss * MSL.length * unit ,'k-','LineWidth',1);
+legend('FDTD simulated attenuation','t=35um, loss model by E. Hammerstad & F. Bekkadal','Location','NorthWest');
+
+