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<DIV><SPAN class=609265113-02082007><SPAN class=796030316-27072007><FONT
face=Arial size=2><SPAN class=796232910-27072007>Hi All,</SPAN></FONT>
<DIV><FONT face=Arial size=2><SPAN
class=796232910-27072007></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=796232910-27072007>NOT related to ALEX
Call for comment or any shielding thereof........</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=796232910-27072007></SPAN></FONT> </DIV>
<DIV><SPAN class=796232910-27072007><FONT face=Arial size=2>Just interesting to
see and maybe learn something.......</FONT></SPAN></DIV>
<DIV><SPAN class=796232910-27072007><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=796232910-27072007><SPAN class=703184314-02082007><FONT
face=Arial size=2>Although this is about shielding gaskets, the presented theory
also applies for shielding in general.</FONT></SPAN></SPAN></DIV>
<DIV><SPAN class=796232910-27072007><SPAN class=703184314-02082007><FONT
face=Arial size=2></FONT></SPAN></SPAN> </DIV>
<DIV><SPAN class=796232910-27072007><SPAN class=703184314-02082007><FONT
face=Arial size=2>Particular interesting is the diagram presented in figure 5,
wrt. the contribution of absorption loss to the total shielding
effectiveness. </FONT></SPAN></SPAN></DIV>
<DIV><SPAN class=796232910-27072007><SPAN class=703184314-02082007><FONT
face=Arial size=2></FONT></SPAN></SPAN> </DIV>
<DIV><SPAN class=796232910-27072007><SPAN class=703184314-02082007><FONT
face=Arial size=2>According to this manufacturer ferromagnetic materials (iron
in this case) seem to work better in this respect below about 3 - 4 GHz
(Curve 1 versus curve 2) ?</FONT></SPAN></SPAN></DIV>
<DIV><SPAN class=796232910-27072007><SPAN class=703184314-02082007><FONT
face=Arial size=2></FONT></SPAN></SPAN> </DIV>
<DIV><SPAN class=796232910-27072007><SPAN class=703184314-02082007><FONT
face=Arial size=2>Note that these are theoretical loss values (calculated with
the presented formula's) and practical values will be lower, depending on the
actual situation.</FONT></SPAN></SPAN></DIV>
<DIV><SPAN class=796232910-27072007><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=796232910-27072007><A
href="http://www.chomerics.com/products/documents/emicat/pg192theory_of_emi.pdf"><FONT
face=Arial
size=2>http://www.chomerics.com/products/documents/emicat/pg192theory_of_emi.pdf</FONT></A></SPAN></DIV>
<DIV><SPAN class=796232910-27072007><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=796232910-27072007><SPAN class=703184314-02082007><FONT
face=Arial size=2>Any thought's?</FONT></SPAN></SPAN></DIV>
<DIV><SPAN class=796232910-27072007><SPAN class=703184314-02082007><FONT
face=Arial size=2></FONT></SPAN></SPAN> </DIV>
<DIV><SPAN class=796232910-27072007><SPAN class=703184314-02082007><FONT
face=Arial size=2></FONT></SPAN></SPAN> </DIV>
<DIV><SPAN class=796232910-27072007><SPAN class=703184314-02082007><FONT
face=Arial size=2>73 's,</FONT></SPAN></SPAN></DIV>
<DIV><SPAN class=796232910-27072007><SPAN class=703184314-02082007><FONT
face=Arial size=2></FONT></SPAN></SPAN> </DIV>
<DIV><SPAN class=796232910-27072007><SPAN class=703184314-02082007><FONT
face=Arial
size=2>Henry.</FONT></SPAN></SPAN></DIV></SPAN></SPAN></DIV></FONT></DIV></BODY></HTML>