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Small info on Current GaAs technology needed

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svarun

svarun

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Hi all,
I need to know what is the current standard in the thickness of GaAs substrate used for MMIC design.Last , when I read , it was 500 micron,I am sure it has gone down by much.Can you please throw some light on this ?

Thank you
 

The most popular for microstrip is 4 mils (100 microns). For power there is also 2 mils. UMS has something between for high frequency (lower W band).
If you go on CPW then it might be 500 microns.
 

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