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Old November 24th 05, 06:47 PM posted to rec.radio.amateur.antenna
Reg Edwards
 
Posts: n/a
Default Antenna reception theory


"Paul Taylor" wrote in message
news
Hi,

I am looking for an explanation of how an antenna receives a signal
due
to the E-field of an electromagnetic wave.

I have looked in some books, and can understand transmission, but

the
books I have looked in don't explain reception.

I have found an explanation of how the H-field induces a signal in a

loop
antenna: a changing magnetic flux will induce a current.

But what about the E-field and a dipole antenna? I guess that the

E-field
causes electrons to move in the antenna wire, because in a solid
conductor, electrons will move until the E-field inside the solid is
cancelled out?

I have googled but having difficulty finding a good explanation.


===================================

It is impossible for an E-field to exist without an H-field.

Therefore, antennas of all sorts receive signals in the same way as a
simple loop. Calculations can begin using either the E-field or the
H-field but they both give the same answer.
----
Reg.