[SI-LIST] Re: rf boards
- From: "David Kaiser" <david.kaiser@xxxxxxxxxx>
- To: <rishi179@xxxxxxxxxxx>, <si-list@xxxxxxxxxxxxx>
- Date: Wed, 8 Oct 2003 18:14:44 -0600
The short answer is this:
At very low frequencies, the voltage at one end of the trace is the same as=
the voltage at the other end of the trace at any instant in time.
However, at very high frequencies, the voltage at one end of the trace can=
be very different from the voltage at the other end of the trace at any=
instant in time.
This variation in voltage on a single piece of metal at the same instant in=
time causes "Transmission Line Effects". When this happens, you must leave=
simple AC Circuit Analysis and enter into Electromagnetic Field Theory=
because now the physical geometry of the circuit and the charateristics of=
the board material become important.
Try this web site. Lots of high frequency design analysis info.
www.gigatest.com
David Kaiser
4 McDATA Pkwy.
Broomfield, CO 80021
(720) 558-4431
david.kaiser@xxxxxxxxxx
-----Original Message-----
From: rishikesh pawar [mailto:rishi179@xxxxxxxxxxx]
Sent: Tuesday, October 07, 2003 11:57 PM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] rf boards
hi all ,
here are some of my simple questions, may u might help me.
1. why wires and printed circuit boards require special consideration when=
used at RF frequencies.
=20
2. what are these considerations, pdf or links may help me.
=20
thanks in advance.
=20
rishi.=20
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