[SI-LIST] Re: impedance matching for high freq PCB

Does a parallel termination work well up to 5G as well?  And with "good 
board material", do you mean any RF/microwave material with low loss tangent?

Also, does any one have a good resource for guidelines for PCB design in 
the GHz range?

Thanks.
Betty.

At 12:40 AM 1/30/2003 -0500, you wrote:
>a series term should work up to 5G if you use good board material.
>
>-----Original Message-----
>From: si-list-bounce@xxxxxxxxxxxxx
>[mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of Betty Luk
>Sent: Wednesday, January 29, 2003 8:25 PM
>To: si-list@xxxxxxxxxxxxx
>Subject: [SI-LIST] impedance matching for high freq PCB
>
>
>
>Dear SI experts,
>
>I am working on a project to test high speed optoelectronic circuits
>(hopefully up to the 1-3GHz range).  I am making a PCB board to drive the
>circuit (a CMOS gate).  So I am faced with the problem of matching a 50Ohm
>line to almost infinite impedance.
>
>1) Traditional termination schemes using resistors such as parallel and
>series termination - up to what frequencies are these methods valid?
>
>2) if not, what other schemes should be considered?
>
>Thank you in advance,
>Betty
>
>
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