LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
  #31   Report Post  
Old December 9th 05, 10:01 PM posted to rec.radio.amateur.antenna
Roy Lewallen
 
Posts: n/a
Default Back to fundamentals

Owen Duffy wrote:


An alternative is to calculate the power collected by a lossless,
matched receiver as Pr=S*A.

In this case, S=0.3**2/(120*pi)

Kraus derives A (the effective apperture) for a short dipole to be
3/8/pi*wavelength**2.

This gives the power collected by the receiver as 6.4mW. If the
antenna and receiver were disected by the ground plane, wouldn't there
be 3.2mW developed in each half of the receiver load?


I believe that's correct. Note that Kraus uses a plain wire dipole for
his aperture correction, but a dipole with end hats (and therefore
uniform current) for input impedance calculations. See my other recent
posting for further comments.

Roy Lewallen, W7EL
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
"THE WORLD MADE YOU NUMBER ONE AND NOW IT'S TIME TO GIVE BACK TO THE WORLD" White Bufallo Shortwave 16 November 1st 03 04:30 AM
Radio Plus Website Back in Action (MW-AM DX products) radiok3pi Shortwave 0 October 21st 03 03:09 AM
Radio New Zealand International back on air Mike Terry Shortwave 4 October 18th 03 02:25 AM
Radio New Zealand International back on air Mike Terry Shortwave 1 October 17th 03 01:20 AM


All times are GMT +1. The time now is 06:43 AM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 RadioBanter.
The comments are property of their posters.
 

About Us

"It's about Radio"

 

Copyright © 2017