On 5/2/07, Alan B. Pearce <A.B.Pearce@rl.ac.uk> wrote:
> >I'm sure you know this frequency will request very high
> >quality microwave guides, with gold plated surfaces and
> >mirror aspect quality.
>
> The guys here doing the terahertz stuff were using micromachined waveguides
> in semiconductors. We also have a special group doing THz waveguide stuff.
> See http://www.mmt.rl.ac.uk/

This is super technology.
I know how much cost a 40Ghz coaxial cable so I'm not asking about the
mixers used for measurements or about guides.
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