EAST_antenna_2dot45GHz

PURPOSE ^

2.45GHZ EAST LH launcher ALOHA description

SYNOPSIS ^

function antenna_lh = antenna_ITM

DESCRIPTION ^

 2.45GHZ EAST LH launcher ALOHA description 
 
 
 This file describes a Passive Active antenna (not necessary a multijunction)
 
 
 
 INPUT : none
  
 OUTPUT
  - antenna_lh <structure> : ALOHA antenna description (Matlab ITM CPO antenna_lh)

CROSS-REFERENCE INFORMATION ^

This function calls: This function is called by:

SOURCE CODE ^

0001 function antenna_lh = antenna_ITM
0002 % 2.45GHZ EAST LH launcher ALOHA description
0003 %
0004 %
0005 % This file describes a Passive Active antenna (not necessary a multijunction)
0006 %
0007 %
0008 %
0009 % INPUT : none
0010 %
0011 % OUTPUT
0012 %  - antenna_lh <structure> : ALOHA antenna description (Matlab ITM CPO antenna_lh)
0013 %
0014 %
0015 
0016 % This file contains the description of an LH antenna according to the ITM
0017 % defition, i.e. using the CPO antenna_lh format.
0018 %
0019 % An LH antenna is defined as the following :
0020 %  - general description
0021 %  - modules description
0022 %  - waveguides description (dimensions, etc.)
0023 % All the parameters are described in the (poloidal,toroidal)=(theta,phi) frame.
0024 
0025 %% --------------------------------------
0026 %% General description of the antenna
0027 %% --------------------------------------
0028 %  Antenna name
0029 antenna_lh.name = '2.45GHZ EAST LH launcher ALOHA description. One row. ';
0030 
0031 %  Frequency [Hz]
0032 antenna_lh.frequency = 2.45e9;
0033 
0034 %  Power [W]
0035 antenna_lh.power  = []; % not defined here in ALOHA
0036 
0037 % Main parallel refractive index of the launched spectrum.
0038 % NB: Optionnal parameter, for information only, since this value depends
0039 % of the antenna-plasma coupling and antenna feeding.
0040 antenna_lh.n_par = 1.72;
0041 
0042 %% ----------------------------------------
0043 %% Modules description
0044 %% ----------------------------------------
0045 % Number of modules per antenna in the poloidal direction.
0046 modules.nma_theta = 1;
0047 %  Number of modules per antenna in the toroidal direction.
0048 modules.nma_phi = 4;
0049 
0050 %  Position index of the module in the poloidal direction (from low theta to high theta,
0051 %  i.e. from bottom to top if the antenna is on LFS).
0052 modules.ima_theta = ones(1,modules.nma_phi*modules.nma_theta); % numbering in ALOHA goes from top to bottom as view from the plasma.
0053 
0054 %  Position index of the module in the toroidal direction (from low phi to high phi,
0055 %  counter-clockwise when seen from above).
0056 modules.ima_phi = [modules.nma_phi:-1:1]; % numbering in ALOHA goes from left to right as view from the plasma.
0057 
0058 %  Spacing between poloidally neighboring modules [m]
0059 modules.sm_theta = 0;
0060 
0061 %% ----------------------------------------
0062 %% Waveguides description
0063 %% ----------------------------------------
0064 %  Number of waveguides per module in the poloidal direction. (passive and active)
0065 waveguides.nwm_theta = 1;
0066 
0067 % Number of waveguides per module in the toroidal direction. (passive and active)
0068 waveguides.nwm_phi = 8;
0069 
0070 % Mask of passive and active waveguides for an internal module
0071 % 1 for active -- 0 for passive.
0072 waveguides.mask = ones(1,8);
0073 
0074 % Number of passive waveguide between modules in the toroidal direction.
0075 waveguides.npwbm_phi = 1;
0076 
0077 % Number of passive waveguides on each antenna edge in the toroidal direction.
0078 waveguides.npwe_phi = 1;
0079 
0080 % Spacing between poloidally neighboring waveguides [m]
0081 waveguides.sw_theta = 38e-3;
0082 
0083 % Height of waveguides in the poloidal direction [m]
0084 waveguides.hw_theta = 109.2e-3;
0085 
0086 % Width of active waveguides [m]
0087 waveguides.bwa = 10e-3;     
0088 
0089 % Width of internal passive waveguides [m]
0090 waveguides.biwp = 10e-3;
0091 
0092 % Width of edge passive waveguides [m]
0093 waveguides.bewp = 5e-3;
0094 
0095 % Thickness between waveguides in the toroidal direction [m]
0096 % Reminder : length(e_phi) = nma_phi*nwm_phi + (nma_phi - 1)*npwbm_phi + 2*npwe_phi - 1
0097 ep = 3e-3;
0098 ne_phi = waveguides.npwbm_phi*(modules.nma_phi-1) + ...
0099      waveguides.npwe_phi*2 + ...
0100      modules.nma_phi*waveguides.nwm_phi - 1;
0101 waveguides.e_phi = repmat(ep, 1, ne_phi);
0102 
0103 % Short circuit length for passive waveguides [m]
0104 % Reminder : length(scl) = nma_phi*npwm_phi + (nma_phi - 1)*npwbm_phi + 2*npwe_phi
0105 nscl = waveguides.npwbm_phi*(modules.nma_phi-1) + ...
0106        waveguides.npwe_phi*2 + ...
0107        sum(not(waveguides.mask))*modules.nma_phi;
0108 waveguides.scl = repmat(1/4, 1, nscl);     
0109 
0110 %% --------------------------------
0111 %% Modules Scattering parameters
0112 %% --------------------------------
0113 % matrice S des modules ds des fichiers .m (NB : la matrice est rangee sur une seule colonne)
0114 modules.Sparameters.pathFrom = pwd;
0115 modules.Sparameters.pathTo = pwd;
0116 
0117 
0118 filenames = repmat('EAST_Sparam_2dot45',4,1);
0119 
0120 modules.Sparameters.SFileNames = filenames;
0121 
0122 %% Phase deembedding
0123 % These parameters are the phase correction in order to take into account
0124 % the transmission line length between phase measurement and S-matrix description.
0125 % This is only usefull when using input data from experiments.
0126 modules.Sparameters.phase_deembedded = zeros(modules.nma_phi,1);
0127 
0128 
0129 
0130 %% --------------------------------
0131 %% Other antenna_lh CPO parameters
0132 %% --------------------------------
0133 %% Not defined here in ALOHA
0134 %  Plasma edge characteristics in front of the antenna.
0135 antenna_lh.plasmaedge = [];
0136 
0137 %  Amplitude of the TE10 mode injected in the module [W], Matrix (nantenna_lh,max_nmodules). Time-dependent
0138 %modules.amplitude = zeros(1, modules.nma_theta*modules.nma_phi)';
0139 modules.amplitude = sqrt(1/modules.nma_phi)*ones(modules.nma_phi,1);
0140 
0141 %  Phase of the TE10 mode injected in the module [rd], Matrix (nantenna_lh, max_nmodules). Time-dependent
0142 %modules.phase = zeros(1, modules.nma_theta*modules.nma_phi)';
0143 modules.phase = (270*pi/180)*(0:modules.nma_phi-1)';
0144 
0145 %% Not used at all in ALOHA -
0146 %  Reference global antenna position. Vectors (nantenna_lh). Time-dependent
0147 antenna_lh.position = []; 
0148 %  Beam characteristics
0149 antenna_lh.beam = [];
0150 
0151 
0152 %% ------------------------------
0153 %% DO NOT EDIT UNDER THIS LINE
0154 %% ------------------------------
0155 % architecture name of the current antenna = its filename
0156 antenna_lh.archName = mfilename;
0157 
0158 % % Make the array b which contains all the waveguide width
0159 % % of a row of waveguides
0160 % % Not mandory for ITM CPO antenna_lh, but usefull for ALOHA
0161 % b_module = waveguides.mask.*waveguides.bwa + not(waveguides.mask).*waveguides.biwp; % waveguide width inside a module
0162 % b_edge = repmat(waveguides.bewp, 1, waveguides.npwe_phi);  % passive wg width on each side
0163 % b_inter= repmat(waveguides.biwp, 1, waveguides.npwbm_phi); % passive wg width between modules
0164 %
0165 % waveguides.b = [b_edge, kron(ones(1,modules.nma_phi-1),[b_module, b_inter]),b_module, b_edge];
0166 
0167 %  Detailed description of LH antennas.
0168 modules.waveguides = waveguides;
0169 setup.modules = modules;
0170 antenna_lh.setup = setup;
0171 
0172 
0173

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