Discussion
What is radiation resistance?
Answer: A
Radiation resistance is a fictitious resistance which, carrying the same current, would dissipate the power the antenna actually radiates. For a half wave dipole it is about seventy-three ohms and for a short dipole only a few ohms, which is why short antennas are inefficient. Conductor loss is a separate resistance in series with it, the feed point resistance is the sum of the two, and ground loss is one particular contribution to the loss term in a monopole.
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