Having a bit more time, and being in a meeting in Paris (a VERY opulent meeting
room it is, too!)
In a message dated 09/01/2005 23:05:35 GMT Standard Time, G3SEK@ifwtech.co.uk
writes:
The minimum possible *loaded* Q that is required to transform between
two resistances R2>R1, using any possible circuit, is sqrt(R2/R1 -1).
I think this is true for a network of two compnonents. If you allow more
components (e.g. my transformer), it no longer applies. The final extension of
this lies in the use of multi element Tchebychev networks for wide range
matching over several octaves. The definitive work on this was published in
Russia in the early 1960's, and I don't have the reference here.
73
Peter G3RZP
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