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John S October 14th 14 09:23 PM

Short antenna = reduced power
 
On 10/14/2014 3:27 AM, gareth wrote:
"gareth" wrote in message
...
Quoting from Electromagnetism
By F.N.H.Robinson
in the Oxford Physics Series
1973 edition
ISBN 0 19 8518913
Chapter 11, Radiation,
page 102
Formula 11.11

Has in the equation for radiated power the term

(2*PI*L/LAMBDA)**2

where L is the antenna length and LAMBDA the wavelength,
thereby showing that the radiated power decreases when the
antenna length decreases.

I will read up further and report further...


Ramo, Whinnery and Van Duzer gives the same derivation, including
the derivation of radiation resistance.


Please cite book title, edition, and page number.

Thanks.


Mike Tomlinson October 22nd 14 05:57 PM

Short antenna = reduced power
 
En el artículo , John S
escribió:

Ramo, Whinnery and Van Duzer gives the same derivation, including
the derivation of radiation resistance.


Please cite book title, edition, and page number.


You really didn't expect a reply, did you? He's just looking to stir
the ****, as evidenced by the new thread he has started.

--
(\_/)
(='.'=)
(")_(")

gareth October 22nd 14 07:04 PM

Short antenna = reduced power
 
"Mike Tomlinson" wrote in message
...

You really didn't expect a reply, did you? He's just looking to stir
the ****, as evidenced by the new thread he has started.


Once again, it is only from your keyboard that the gratuitous abuse
originates.




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