Re: Microwave test for secondary formers?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Jerry Chamkis by way of Terry Fritz <teslalist-at-qwest-dot-net>" <jchamkis-at-bga-dot-com>

It's probably a good test for dielectic losses- but it's also possible that
some material has superior high voltage characteristics and works fine at 200
KHz but is lossy at 2.4 GHz.  I'd be careful about doing the test in an oven
you use for food-  you may find some plastics getting hot enough to outgas
noxious fumes.  Maybe start with a 15 second blast.

Jerry

On Thursday 03 July 2003 08:52 am, Tesla list wrote:
 > Original poster: "Steve Conner by way of Terry Fritz <teslalist-at-qwest-dot-net>"
 > <steve.conner-at-optosci-dot-com>
 >
 > Dear list,
 >
 > I was reading an article on constructing your own wireless LAN antenna. It
 > suggested using the "Microwave test" to choose plastics. Basically you put
 > a sample of the plastic in your microwave oven and blast it on full power
 > for a minute or two (with a cup of water to absorb excess energy) If the
 > plastic stays cold, then it's OK for antenna fittings.
 >
 > Would the microwave test be a good way of testing secondary former
 > materials? Or is it possible that a material could be a good dielectric at
 > 2.4GHz but lossy at 200kHz?
 >
 > Steve C.

-- 
Jerry Chamkis
jchamkis-at-bga-dot-com