Rev0.0
heroedit@hotmail.com
z
. ,,
.,!
,
z
()
,:
r=0, g=0
,()
EHZ
P
H
.
Ok,,,
,,
.,,,
,.
z (stackup)
stackup, 8 (4 power/ground 4
,sggssggs, L1, L2…L8) L1,L4,L5,L8
L1
L5
,
Oz
Oz Oz( )=28.3 g()
, 1Oz,
Oz/ft²
Thickness
(mil)
Copper
Plating
1/4
0.36
1/2
0.7
1
1.4
2
2.8
3
4.2
4
5.6
(DK)
Cx Co
H
Cx
Co
/
HH
'
"
Prepreg/Core
pp ,,core pp ,
, pp .
z
,,:
,,, 1 , 2
,
8 , top bottom ,
, : 55
60Ohm, 70~110Ohm, 1~2mm,
.
1.6mm, 63mil , 60Ohm,
100Ohm,
, top bottom , top
, polar si6000,:
:
1, W()
2,,,
3, coated microstrip ,, surface
microstrip , surface microstrip ,
4,w1 w2 pcb ,
()
5, 60Ohm ,,
, 1,2ohm
6,h/t
L5
stripline symmetrical stripline ,
symmetrical stripline offset stripline H1=H2
,
,
:
1, DDR2 clock 85Ohm~1394 110Ohm ,
()
(,,,
via )
---------- SI