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COLLINEAR_2450_19.7DBI_1REFLECTOR.NEC
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COLLINEAR_2450_19.7DBI_1REFLECTOR.NEC
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CM Wire 12 1 -G-0.45 -W 0 -G-0.45 W 0 W
CM Wire 13 1 -G-0.30 -W -0.50 -G-0.30 W -0.50 W
CE
SY freq=2450
SY AH=3 'Antenna height in wavelength
SY spacing=0.0130 'Adj gap when testing 0.0130 Help in adjusting VSWR.
SY W=0.0020 'Wire thickness 0.0041 0.0020 @ 2.45 ghz is ethernet cable
SY wla=0.4196 'Center wire 0.4196
SY wlb=0.7078 'Inner wires 0.7078
SY wlc=wlb 'Outer wires 0.72
SY wld=wlb 'End wires 0.72
SY hr=0.0413 'Ring radius 0.0413
SY da=wla
SY db=da+spacing
SY dc=db+wlb
SY dd=dc+spacing
SY de=dd+wlc
SY df=de+spacing
SY dg=df+wld
SY G=0.22 'Reflector gap 0.22 0.10 to 0.40 Decides antenna pattern and VSWR
SY RT=41 'Reflector thickness 41 20mm diameter at 2.45 ghz
SY RH=3 'Reflector height 3
SY STUB1=0.9806 '0.9806 Adjust VSWR
GH 1 10 spacing spacing hr hr hr hr W
GM 0 0 0 0 0 G 0 da 1
GH 2 10 spacing spacing hr hr hr hr W
GM 0 0 0 0 0 G 0 dc 2
GH 3 10 spacing spacing hr hr hr hr W
GM 0 0 0 0 0 G 0 de 3
GW 5 30 G+hr 0 0 G+hr 0 da W
GW 6 10 G+hr 0 db G+hr 0 dc W
GW 7 10 G+hr 0 dd G+hr 0 de W
GW 8 10 G+hr 0 df G+hr 0 dg W
GW 10 30 G 0 0 G 0 da W
GX 100 001
GM 500 3 0 0 90 -G*2 G*2 0
GW 11 30 -G-G 0 0.05 -G-G 0 RH W*RT
GW 13 30 -G-G 0 -0.05 -G-G 0 -RH W*RT
GW 12 1 -G-G -W 0 -G-G W 0 W
GM 0 0 0 0 0 G*2 0 AH
GS 0 0 299.80/freq
GE 1
LD 5 0 0 0 58000000
GN 2 0 0 0 4 0.003
EK
EX 0 12 1 0 1 0 0
TL 12 1 5 1 50 STUB1 0 0 0 0
TL 12 1 505 1 50 STUB1 0 0 0 0
TL 12 1 1005 1 50 STUB1 0 0 0 0
TL 12 1 1505 1 50 STUB1 0 0 0 0
FR 0 0 0 0 freq 0
EN