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Anyone Knows Any TEM Cell Manual? - RF Cafe Forums

The original RF Cafe Forums were shut down in late 2012 due to maintenance issues. Original posts:

Amateur Radio | Antennas | Circuits & Components | Systems | Test & Measurement


teokun
 Post subject: Anyone knows any TEM Cell manual?
Posted: Sun Aug 21, 2005 8:56 am 
 
Lieutenant

Joined: Sun Aug 21, 2005 8:47 am
Posts: 2
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


 
   
 
 
Guest
 Post subject:
Posted: Fri Aug 26, 2005 3:17 pm 
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.





Posted  11/12/2012

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