> I need to design an antenna which should be able to radiate 1KHz to 3MHz.
> i will feed the antenna with any of the frequency in this range. Then i will
> check the radiated field using another antenna, So that should receive
> these. Then My idea is to calculate the lost power to detect metal. I do
> interested in building the antenna.

It would be worth looking at what other people are doing that works.

You haven't told us what size or type of metal, what sort of range,
what sort of environment that may influence the result and more.

Of my prior question list, these seems till to apply:

What did you base your detector on /
where did you get the idea,
what did they use as a search coil?,

if your detector is not based on
existing equipment why do you think it will work/
how do you think it works /

what sort of coil do you calculate it needs,
do you really need that very low bottom end frequency?,
Why ? ,

What sort of signal does perfectly working hardware expect to get,
why do you expect an aerial to provide the sort of signal that your
perfectly working hardware needs,

How .....?

ie What is it meant to do (details), Why do you think your method works, ...?

     Russell
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