View Single Post
  #55   Report Post  
Old December 10th 10, 08:40 PM posted to rec.radio.amateur.antenna
K1TTT K1TTT is offline
external usenet poster
 
First recorded activity by RadioBanter: Apr 2010
Posts: 484
Default antenna physics question

On Dec 10, 4:12*pm, Art Unwin wrote:
On Dec 10, 8:37*am, joe wrote:



Art Unwin wrote:
*I am sure you also know that only
units used by Mawell represent the path
to maximum efficiency in radiation as well as
the ratio of capacitance to inductance must be
*unity.
Art KB9MZ....xg


Art, You have just mentioned a constraint on antennas that I was not aware
of. *Specifically "the ratio of capacitance to inductance must be unity".


This is new to me. Please tell me how I go about making capacitance and
inductance equal so their ratio can be unity. How do you get the Farads and
Henries to cancel out, leaving a dimensionless number.


Can you give me some real world examples?


joe


I will be happy to do so
Root L/C = 1

This means that L/C both of which are loss contributors are removed
from any formulae
Art


neither L nor C contributes any loss in any kind of circuit analysis i
have ever seen.... its always the R that converts the electrical
energy to heat to remove it from doing something useful besides
heating the room.