[MLB-WIRELESS] Physics guide

[Tony Langdon]

> point of conversion from electric and magnetic fields in e 
> and h planes
> to voltage potential signals in cable. Not the math (would be 

Well, quite simple at its most basic level.  Depends on the antenna though.
Some antennas (e.g. a common dipole) are sensitive to the E field and pick
it up directly (statically induced voltage).  An E field causes a potential
difference along the antenna (i.e. voltage). 

Other antennas use the principle of magnetic induction from the magnetic
field component of the EM field.  A varying magnetic field produces a
voltage in a conductor.  The same principle that generators and alternators
use to generate electric current.

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