Author Topic: DIY Open-Sided TEM Cell for EMC Testing?  (Read 8362 times)

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Offline coflynnTopic starter

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DIY Open-Sided TEM Cell for EMC Testing?
« on: March 07, 2015, 10:32:03 pm »
Hello,

I wondered if anyone had designed/built their own open-sided TEM cell for basic EMC testing, or otherwise used one? Basically appears to be a few pieces of PCB of appropriate dimensions to form the cell.

As a reference here is a few examples of what I'm talking about:
Commercial small TEM cell - $599, see manual for details
Atmel article on TEM cell - fairly large
Paper on DIY TEM cell - medium size

I was looking at making PCB design that could just be sent to fab, but wondered if someone else had done that? The $600 TEM cell isn't a terrible deal compared to the cost of large PCBs, but it's also maybe a little small for my use.

Regards,

  -Colin
 

Offline T3sl4co1l

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Re: DIY Open-Sided TEM Cell for EMC Testing?
« Reply #1 on: March 08, 2015, 04:15:58 am »
One of these days I'm going to do something like that.  But why use PCB?  I was thinking cardboard, aluminum foil and tape!

Tim
Seven Transistor Labs, LLC
Electronic design, from concept to prototype.
Bringing a project to life?  Send me a message!
 

Offline wemme

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Re: DIY Open-Sided TEM Cell for EMC Testing?
« Reply #2 on: April 23, 2015, 10:24:26 am »
I would like to build a closed tem cell for emc radiated and susceptibility testing.  I always thought a open tem cell was some what compromised I.e spewing out e fields and picking up back ground noise.  Any one have any experience with these?
 

Offline acbern

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Re: DIY Open-Sided TEM Cell for EMC Testing?
« Reply #3 on: April 23, 2015, 11:17:16 pm »
would agree, should be closed. am interested as well, so anybody who has done that and wishes to share info would really be appreciated.
 

Offline wemme

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Re: DIY Open-Sided TEM Cell for EMC Testing?
« Reply #4 on: April 24, 2015, 10:37:52 pm »
I Have collected a number of papers including research on the topic however i have not had any time to review or do anything about it as i am seriously tied up with work.
PM me if you are interested in a copy of what i have collected.
Regards
Bart
would agree, should be closed. am interested as well, so anybody who has done that and wishes to share info would really be appreciated.
 

Offline asiannerd

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Re: DIY Open-Sided TEM Cell for EMC Testing?
« Reply #5 on: May 14, 2015, 09:12:11 am »
We use a commercial open TEM Cell in our lab: http://www.frankoniagroup.com/downloads/EMC_Test_Equipment/tem_cells_open.pdf , though not really low cost. Advantage is that we can monitor displays and LEDs during testing easily.
External noise can be easily identified by powering on/off the DUT
Here a youtube video from the chip whisperer using an open TEM Cell:

 

Offline Smokey

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Re: DIY Open-Sided TEM Cell for EMC Testing?
« Reply #6 on: February 09, 2023, 06:58:21 am »
Anyone end up making one of these?
 

Online nctnico

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Re: DIY Open-Sided TEM Cell for EMC Testing?
« Reply #7 on: February 09, 2023, 08:39:08 am »
Anyone end up making one of these?
Yes. I have designed and build a fully closed TEM cell. But I didn't got to finishing the text yet and the Excel sheet I created to calculate all the sizes needs some tweaking as well. I'm planning to do a very longwinded post about the entire project. Likely I'll need several postings to fit all the text...
« Last Edit: February 09, 2023, 12:05:58 pm by nctnico »
There are small lies, big lies and then there is what is on the screen of your oscilloscope.
 


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