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.