[SI-LIST] Re: Slot Antenna

Ibrahim,
Besides the slot antenna which might be exacerbated by signals crossing the
split, or EM noise propagating from inside your PCA, it sounds like you now
also have two patch antennas (3.3 and 1.5).  Actually, both of these effects
can be mostly mitigated with an underlying continuous closely coupled ground
plane (2 to 4 mils) and good high frequency discrete decoupling capacitors
sprinkled around both voltage planes.

-Jeff Evans
EMC Architect/Lead
Research and Development
Industry Standard Server Division
Hewlett Packard Company

-----Original Message-----
From: Ibrahim Khan [mailto:ikhan@xxxxxxxxxxxxxxxxxxx] 
Sent: Friday, July 26, 2002 8:59 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] 


Hello SI Gurus,
 
If we have a split plane with two different voltages on the splits (e.g 3.3
on one side and 1.5 on the other).  Will it make a slot antenna.
 
Thanks for any insight.
 
Ibrahim Khan

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