[SI-LIST] : Crosshatched ground planes

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From: Martyn Gaudion (martyn@gaudionm.freeserve.co.uk)
Date: Wed Jun 21 2000 - 15:46:01 PDT


Dear all...

Can anyone help me with regard to crosshatching of ground
planes.

There does seem to be a practice of crosshatching to
increase trace impedance whilst keeping impedance controlled
lines at a manufacturable width, I would guess though that at
higher frequencies the crosshatching looks like a large
number of impedance discontinuities.

Does anyone have any guidelines on this?

Kind regards

Martyn Gaudion
Marketing Manager
Polar Instruments
Tel: + 44 1481 253081
Fax: + 44 1481 252476

www.polar.co.uk
email: <martyn.gaudion@polar.co.uk>
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