Power plane to be regarded AC GND?

Status
Not open for further replies.
C

cybq

Junior Member level 3
Joined
May 31, 2003
Messages
31
Helped
2
Reputation
4
Reaction score
2
Trophy points
1,288
Location
sz
Activity points
299
During mulitilayer design, maybe regard the power plane to AC GND plane in order to design a stripline? Thks in advance.
 

In high frequency ,the power plane same as GND for stipline ,I think
 

sure.
You would see ac-grounded in any DC-Bias circuit for an AC analysis in SPICE simulator.
 

In my design,I would have splitted the whole power plane to two part: GND and POW.
 

Yes, technically a power plane can be regarded as an AC(RF) ground plane,
however I would personally not use a power plane as part of the
stripline ground.

This is because the device that is powered from the power plane may
introduce noise into the stripline. I therefore tend to keep 'real' ground
above and below any rf striplines and preferably add stitching ground
vias around the RF line.

Martin
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…