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Old August 26th 08, 08:24 PM posted to rec.radio.amateur.antenna
John Smith John Smith is offline
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First recorded activity by RadioBanter: Nov 2006
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Default Dumb question about EZNEC

JB wrote:
"John Smith" wrote in message
...
Jim-NN7K wrote:
Hi- was searching Amazon , and see several books on Strip Line Antennas
my biggie is: Eznec will take WIRE DIA, and Dial. Constant, and
Thickness in inches of that dialectric. Does this mean that EZNEC is
useable to substrate material (G-10, Teflon, ect) to model Printed
Circuit antennas?
IF so, how do you go from a WIRE Diameter, to a Rectangular wire,
(say 3 MM X width of 5 MM,by x cm long), on a plane of G-10 ?
Or is this beyond its capabilities? Just curious if can handle this!
Maybe am halucinateing, again!

Comments, please! Jim NN7K

Imagine attempting to model these masks of DLM antennas:

http://assemblywizard.fr33webhost.com/masklayout.pdf

;-)

Regards,
JS


So how would they be fed? Monopole needs a GP or fed as doublet. I have
anxiety just looking at it.

Inverted L is soo much easier.



They would be fed though a series capacitance to a tap on the lower
coil, at a point to obtain a 50 ohm feed point, generally ... and
considering the 1/2 wave design.

A 1/4 wave design would simply be fed at the base of the lower coil with
a sufficient ground plane provided ...

.... in the monopole models.

A T or Delta match could/would be implemented on a dipole version.

Regards,
JS