On Thu, 04 Mar 2004 22:31:40 GMT, "aunwin"
wrote:
....
give the pros and cons between a series
circuit and a parallel circuit from which to base a radiator ?
....
Just to give you a start a series circuit radiator is a dipole.

And we will
say a parallel circuit radiator is one with at least one capacitive lumped
circuit and one inductive lumped circuit in parallel.
....
Here is a start
A dipole provides a lot of signals at the same time( good)
A parallel circuit can only supply one signal at a time (bad )
Get the idea?

Hi Art,

A dipole is the most efficient antenna.

The parallel circuit offers loss to an already most efficient antenna.

A dipole is simple to load and often requires no matching.

The parallel circuit is difficult to load and always requires
matching.

A dipole offers a standard of gain.

The parallel circuit offers no change in gain except the prospect of
reducing it through making the antenna smaller to become a resonant
system.

A dipole is a simple construction.

The parallel circuit adds complexity which raises the prospects of
mechanical and electrical failure.

A dipole offers hazardous potentials at its tips.

A parallel circuit double that danger by offering hazardous potentials
at both its tips and its drive point.

A dipole requires isolation/insulation at its tips due to high
potentials.

A parallel circuit requires isolation/insulation at its drive point
AND its tips due to high potentials.

Is that the idea? I presume you can distinguish good/bad.

73's
Richard Clark, KB7QHC