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EMC and TEM Cell - 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


leo_abhi
 Post subject: EMC and TEM Cell
Posted: Fri Jun 29, 2007 7:26 am 
 
Lieutenant

Joined: Sun May 28, 2006 10:47 am
Posts: 1
Hallo,

I am using a TEM Cell to measure the Radiated Emissions for a microcontroller Core..

Strange but when i connected a empty TEM cell to Spectrum anaylser there are some radiations seen in low frequency and mobile range(This is understandable) , Can anyone tell me why is this, what could be done to improve or rather eliminate it..Are these disturbances already considered in IEC specifications or TEM cell has improper calibrations..

Please reply.,


 
   
 
sm7ovk
 Post subject:
Posted: Thu Jul 19, 2007 6:19 am 
 
Lieutenant
User avatar

Joined: Thu Jan 11, 2007 12:59 pm
Posts: 4
Hi,

have you checked your cables? If you are using cables with bad shielding you might have signals entering this way. Try also to put a 50ohm load in the other end of the TEM. Last - it could be stong signals entering your analyzer and you then need a shielded room for your measurements.

Regards
Jens





Posted  11/12/2012

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