Could it be similar to laminations in a transformer core?  To stop magnetic a field (perpendicular to board) from inducing circulating currents in the board.

It might also be some kind of strip line filter.

What is the board from?  We might be able to tell from context?

Cheers,
Don


At 12:40 PM 2/11/02 -0600, you wrote:
>Yes, but why the funky split-and-rejoin and weird bends?
>
>nick@veys.com | www.veys.com/nick
>
>> -----Original Message-----
>> From: pic microcontroller discussion list
>> [mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of David P. Harris
>> Sent: Monday, February 11, 2002 12:38 PM
>> To: PICLIST@MITVMA.MIT.EDU
>> Subject: Re: [EE]: about PCB traces
>>
>>
>> I think is is a ground plane.
>> David
>>
>> Andre Abelian wrote:
>>
>> > Hi to all,
>> >
>> > Apologize if the tag isn't right.
>> > Friend of mine sent me a picture of this attached board
>> > that I couldn't recognize the purpose of traces being like
>> that. The
>> > board is hatched by very specific way Any idea why traces are like
>> > that? Is it for RF?
>> >
>> > Andre
>> >
>> >
>> --------------------------------------------------------------
>> ----------
>> >                  Name: board2.jpg
>> >    board2.jpg    Type: JPEG Image (image/jpeg)
>> >              Encoding: base64
>>
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