[SI-LIST] Re: Mixed digital/RF board with switching power supplies

  • From: "Mikhail Matusov" <matusov@xxxxxxxxxxxx>
  • To: <si-list@xxxxxxxxxxxxx>
  • Date: Fri, 6 Jul 2007 14:14:13 -0400

----- Original Message ----- 
From: "Boris Traa" <boris.traa@xxxxxxxxxxx>

> Are the circuits that are interfered  implemented as differential
> circuits?
>
Where possible they are, but the big portion of the RF is not. Traditionally 
most of the RF circuits are 50 Ohm single-ended. I tried designing some 
differential RF filters in the past and it didn't work too well... Besides, 
the interface at the board edge usually has to be a 50 Ohm connector of some 
sort anyway.

/Mikhail 

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