1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
#instructions to compile :
#
#swig -c++ -python PyNEC.i
#g++ -c nec_context.cpp PyNEC_wrap.cxx -I/usr/local/include/python2.4 -I/usr/local/lib/python2.4/config -DHAVE_CONFIG_H
#g++ -shared -lstdc++ nec_context.o nec_output.o c_plot_card.o c_geometry.o misc.o nec_exception.o nec_ground.o c_ggrid.o matrix_algebra.o nec_radiation_pattern.o nec_structure_currents.o c_evlcom.o PyNEC_wrap.o -o _PyNEC.so
#example2.nec (modified in order to get several excitations) :
#
#CMEXAMPLE 2. CENTER FED LINEAR ANTENNA.
#CM CURRENT SLOPE DISCONTINUITY SOURCE.
#CM 1. THIN PERFECTLY CONDUCTING WIRE
#CE 2. THIN ALUMINUM WIRE
#GW 0 8 0. 0. -.25 0. 0. .25 .00001
#GE
#FR 0 3 0 0 200. 50.
#EX 5 0 5 1 1. 0. 50.
#EX 5 0 4 1 1. 0. 50.
#XQ
#EN
from PyNEC import *
#creation of a nec context
context=nec_context()
#get the associated geometry
geo = context.get_geometry()
#add a wire to the geometry
geo.wire(0, 8, 0, 0, -.25, 0, 0, .25, .00001, 1, 1)
#end of the geometry input
context.geometry_complete(0)
#add a "fr" card to specify the frequency
context.fr_card(0, 3, 200e6, 50)
#add a "ex" card to specify an excitation
context.ex_card(5, 0, 5, 0, 0, 1, 0, 0, 0, 0, 0)
#add an other "ex" card to specify a second excitation
context.ex_card(5, 0, 4, 0, 0, 1, 0, 0, 0, 0, 0)
#add a "xq" card to force the simulation execution
context.xq_card(0)
#get the first antenna_input (there are several ones, each one corresponding to one single frequency)
ai=context.get_input_parameters(0)
|
