View Single Post
  #2   Report Post  
Old May 3rd 07, 09:48 PM posted to rec.radio.amateur.antenna
Frank's Frank's is offline
external usenet poster
 
First recorded activity by RadioBanter: Dec 2006
Posts: 44
Default Gaussian cluster antenna array data

"art" wrote in message
oups.com...
The following is an example of a gaussian array except that
only element height has been subjected to variation and not all
dimensions
A gaussian array is aimed towards resonant elements in cluster form.

Freq Gain dbi F/B F/B ave Zr Zi Swr Toa
BW
14.15 14.6 25.9 25.2 27.1 -5.7 1.34 12
63
14.2 14.6 29 28.2 27.5 -1.9 1.25 11
63
14.25 14.6 30.6 30.6 27.8 1.9 1.24 11
63
14.3 14.6 28.2 28 28 5.7 1.31 11
63
14.35 14.6 25.2 28.2 28.2 9.6 1.73 11
63

Dimensions
Cartesian, inches. Elements 1.3 in dia tapered

X Y Z
273.3 164.1 820
25.1 203.3 1079
171.1 202.1 582
321.6 178.4 1036.5
2.1 206.5 701.2
153.5 194.5 1038.1


Gaussian arrays are based on adding a unit of time to
Gaussian law of statics which allows for trensformation from
a Conservative field to a Non Coservative field with
conformance to Maxwell laws. Elements are
in cluster form where each element is aimed at resonance
as is the array is in its entirety. Element positions are not
constrained with respect to position or shape.
See Pointings Vector for similarities
Art


NEC 4.1 Computes at 14.25 MHz:

Gain 6.3 dBi
F/B ratio 4.2 dB
TOA 11 deg.
Zin 107.9 + j 245.3

Code used as follows:

CM Gaussian Array
CE
GW 1 30 273.3 164.1 820 25.1 203.3 1079 0.65
GW 2 41 171.1 202.1 582 321.6 178.4 1036.5 0.65
GW 3 31 2.1 206.5 701.2 153.5 194.5 1038.1 0.65
GS 0 0 0.025400
GE 1 -1 0
GN 2 0 0 0 13.0000 0.0050
EX 0 2 21 0 1 0
FR 0 5 0 0 14.15 0.05
LD 5 0 0 0 3.08E7
RP 0 181 1 1000 -90 90 1 1
EN

Where the coordinates are in inches. Please verify that
I have interpreted the coordinates correctly. I have
assumed the driven element is "GW 2", and fed in the
center. I have also used non tapered 0.13" diameter
6063-T832 aluminum alloy. Segment tapering is
allowed, but these dimensions have not been
specified. Our results appear to be significantly different.

73,

Frank