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Anyone knows any TEM Cell manual? - RF Cafe Forums
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| teokun
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Post subject: Anyone knows any TEM Cell manual?
Posted: Sun Aug 21, 2005 8:56 am
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Joined: Sun Aug 21, 2005
8:47 am
Posts: 2 |
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Good day people.
I'm currently doing an undergraduate
project on EMC. I'm supposed to build a simple TEM
Cell for the measurement of radiated emission from
IC. Anyone knows where to find a TEM Cell manual
or specification or something that may help? I try
the web but couldnt find any. Hope anyone can help
me out.
Great thanks!
Cheers,
teokun
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Guest |
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Post subject:
Posted: Fri Aug 26, 2005 3:17 pm
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Teokun,
It is quite simple.
1. The
TEM cell is a coaxial cable. The physical relationship
for a 50 Ohm coax cable (in air) should be maintained
all throughout the expansion (RF input) sector,
the continous sector and the terminating sector
(The one where there is supposed to be a dummy load).
2. The maximum operating frequency is proportional
to one quarter wavelength between the center conductor
and the metal cabinet.
3. The field strength
is (for practical terms) U = SQRT (P * R) [R=50]
If used for Radiated Immunity tests.
(Provided
that the device under test is smaller than the width
of the flat center conductor and that it is placed
1/2 distance between the ground and the center conductor.
Using white plastic foam is recommended for
DUT support.
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Posted 11/12/2012
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