[AMPS] Propeties of plastics at 10 GHz

[Bob Alexander]

> >Sorry this is not stictly about amps, but I guess someone here might
> >know the answer.
> >
> >We have a student working on using a 10 GHz transmitter (burgler alarm
> >type, using a 10GHz Gunn diode) and detector (Schottky diode) to measure
> >attenuation caused by cloathing soaked with water (to determine the
> >amount of water in the cloathing). We need to find a plastic (or other
> >material that we can machine things from) that *absorbs* microwave
> >energy at 10 GHz. I don't want a good reflector (metals), but something
> >that will attenuate by absorption (ie it would get hot if we used enough
> >power).
> >
> Nylon.  Vinyl.  Delrin.
> 
> Rich...
> 
> R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
------------
Howdy,
Nylon, vinyl and delrin are poor absorbers at 10 GHz.  They do work 
well if you want to change the phase of a signal @ 10 GHz.

Cuming Corporation, 230 Bodwell St., Avon, Ma 02322 manufactures
machinable, absorptive materials that will do what you want.

Good luck,
Bob, W5AH

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