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how to meas Zo of FT caps?
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July 8th 04, 07:05 PM
Tdonaly
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Wes wrote,
Message-id:
On Wed, 07 Jul 2004 18:34:15 -0400,
wrote:
|Well here's what I did: I treated it like a peice of coax. I made a
|fixture to hold the "feedthru" with semi-rigid coax on one side and a
|50 ohm chip resistor on the other. I dropped in a short peice of coax
|and cal'ed to that. Then checked VSWR, was about 1.00something. Then I
|took out the coax, dropped in a few feedthrus and got VSWRs about 1.04
|- 1.06, which works out to about 53 - 55 ohms or so.
| How's that sound?
Like you don't know what you're doing.
Your DUT is a two-port device. If you really have a network analyzer,
why aren't you using it to measure the device as a two port?
Is two port theory even being taught in engineering schools these days?
73,
Tom Donaly, KA6RUH
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