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Old December 20th 05, 01:56 AM posted to rec.radio.amateur.antenna
Gene Fuller
 
Posts: n/a
Default Antenna reception theory

Richard,

There is no problem with Terman's words, but I believe you are missing
his intention.

His point in bringing up the magnetic flux is merely to say that one can
find "exactly the same voltage" in the one meter long conductor by
considered either the electric field directly or by considering the
sweep of the magnetic field. It is just a statement of equivalence of
the two components of the incident plane wave. This same sort of
statement is found in many other textbooks.

Terman's conductor is in free space. He discusses the voltage difference
between one end of the conductor and the other end of the same
conductor. He does not address the question at hand, which is the
voltage between a perfect ground plane and the bottom of a short
conductor near that ground plane.

At least two people have explained why that voltage is not one volt for
an incident field strength of one volt per meter.

73,
Gene
W4SZ


Richard Harrison wrote:

[snip]

Reg`s question of how much voltage is induced in 1 m of wire in a field
of 1 V/m is answered clearly by Terman in publications which date back
at least to 1932, the earliest copyright date I saw on "Radio
Engineering". So, many competent and critical reviewers have pored over
Terman`s works that it`s almost certain that any errors have been found
and corrected long ago. Everybody makes mistakes, but now Terman is as
close to infallible on the subject of radio as any author I know. Read
page 2 of Terman`s "Electronnic and Radio Engineering" (1955 edition)
for complete details. The same information appears in some other Terman
authored and edited writings (almost word for word).

Best regards, Richard Harrison, KB5WZI