83 lines
3.1 KiB
Matlab
83 lines
3.1 KiB
Matlab
function nf2ff = ReadNF2FF(nf2ff)
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% function nf2ff = ReadNF2FF(nf2ff)
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%
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% internal function to read calculated nf2ff data, use CalcNF2FF to read
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% existing nf2ff data
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%
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% See also: CalcNF2FF, CreateNF2FFBox
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%
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% openEMS matlab interface
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% -----------------------
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% author: Thorsten Liebig, 2012
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file = nf2ff.hdf5;
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hdf_mesh = ReadHDF5Mesh(file);
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nf2ff.r = double(hdf_mesh.lines{1});
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nf2ff.theta = double(hdf_mesh.lines{2});
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nf2ff.phi = double(hdf_mesh.lines{3});
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% read attributes
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nf2ff.freq = ReadHDF5Attribute(file,'/nf2ff','Frequency');
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nf2ff.Prad = ReadHDF5Attribute(file,'/nf2ff','Prad');
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nf2ff.Dmax = ReadHDF5Attribute(file,'/nf2ff','Dmax');
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try
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nf2ff.Eps_r = ReadHDF5Attribute(file,'/nf2ff','Eps_r');
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catch
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nf2ff.Eps_r = ones(size(nf2ff.freq));
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end
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try
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nf2ff.Mue_r = ReadHDF5Attribute(file,'/nf2ff','Mue_r');
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catch
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nf2ff.Mue_r = ones(size(nf2ff.freq));
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end
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if isOctave
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hdf = load( '-hdf5', file );
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for n=1:numel(nf2ff.freq)
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nf2ff.E_theta{n} = double(hdf.nf2ff.E_theta.FD.(['f' int2str(n-1) '_real']) +1i*hdf.nf2ff.E_theta.FD.(['f' int2str(n-1) '_imag']) );
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nf2ff.E_phi{n} = double(hdf.nf2ff.E_phi.FD.(['f' int2str(n-1) '_real']) +1i*hdf.nf2ff.E_phi.FD.(['f' int2str(n-1) '_imag']) );
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nf2ff.E_norm{n} = double(sqrt(abs(nf2ff.E_theta{n}).^2+abs(nf2ff.E_phi{n}).^2));
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nf2ff.P_rad{n} = double(hdf.nf2ff.P_rad.FD.(['f' int2str(n-1)]));
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end
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else
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% matlab compatibility to older versions
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if verLessThan('matlab','7.12')
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% read data
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for n=1:numel(nf2ff.freq)
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nf2ff.E_theta{n} = double(hdf5read(file,['/nf2ff/E_theta/FD/f' int2str(n-1) '_real']) + 1i*hdf5read(file,['/nf2ff/E_theta/FD/f' int2str(n-1) '_imag']));
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nf2ff.E_phi{n} = double(hdf5read(file,['/nf2ff/E_phi/FD/f' int2str(n-1) '_real']) + 1i*hdf5read(file,['/nf2ff/E_phi/FD/f' int2str(n-1) '_imag']));
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nf2ff.E_norm{n} = double(sqrt(abs(nf2ff.E_theta{n}).^2+abs(nf2ff.E_phi{n}).^2));
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nf2ff.P_rad{n} = double(hdf5read(file,['/nf2ff/P_rad/FD/f' int2str(n-1)]));
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end
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else
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% read data
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for n=1:numel(nf2ff.freq)
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nf2ff.E_theta{n} = double(h5read(file,['/nf2ff/E_theta/FD/f' int2str(n-1) '_real']) + 1i*h5read(file,['/nf2ff/E_theta/FD/f' int2str(n-1) '_imag']));
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nf2ff.E_phi{n} = double(h5read(file,['/nf2ff/E_phi/FD/f' int2str(n-1) '_real']) + 1i*h5read(file,['/nf2ff/E_phi/FD/f' int2str(n-1) '_imag']));
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nf2ff.E_norm{n} = double(sqrt(abs(nf2ff.E_theta{n}).^2+abs(nf2ff.E_phi{n}).^2));
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nf2ff.P_rad{n} = double(h5read(file,['/nf2ff/P_rad/FD/f' int2str(n-1)]));
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end
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end
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end
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% Calculation of right- and left-handed circular polarization
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% adopted from
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% 2012, Tim Pegg <teepegg@gmail.com>
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% cleanup (if exist)
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nf2ff.E_cprh = [];
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nf2ff.E_cplh = [];
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% Setup vectors for converting to LHCP and RHCP polarization senses
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[THETHA PHI] = ndgrid(nf2ff.theta,nf2ff.phi);
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cosphi = cos(PHI);
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sinphi = sin(PHI);
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for f=1:numel(nf2ff.freq)
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nf2ff.E_cprh{f} = (cosphi+1i*sinphi) .* (nf2ff.E_theta{f}+1i*nf2ff.E_phi{f})/sqrt(2);
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nf2ff.E_cplh{f} = (cosphi-1i*sinphi) .* (nf2ff.E_theta{f}-1i*nf2ff.E_phi{f})/sqrt(2);
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end
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