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Old March 20th 09, 03:28 PM posted to rec.radio.amateur.antenna
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Default colinear representation in NEC

Cecil Moore wrote:
Could it be that a monopole is a "STANDING WAVE ANTENNA"?


Here's an EZNEC simulation of a 1/4WL monopole. It is
a 1/4WL stub with the wire resistivity adjusted to
simulate monopole radiation. The standing wave current
distribution (lack of phase) and feedpoint resistance
are similar to a monopole.

http://www.w5dxp.com/stub_dip.EZ

Add a short at the top and a load of 600 ohms in the
shorted segment and observe the traveling wave.

http://www.w5dxp.com/stubsht.EZ

Turn on the current phase display and observe the
traveling wave phase shift.
--
73, Cecil http://www.w5dxp.com
"Government 'help' to business is just as disastrous as
government persecution..." Ayn Rand
 
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