[SI-LIST] Re: RF board Vs High speed board

Hello, John,

RF signals are "narrow band", i.e. modulation is superimposed on a carrier
frequency.  The modulation bandwidth is significantly smaller than the
carrier frequency (your car radio is a good example - carrier is around
100kHz, bandwidth is around 20kHz.)  RF requires filtering to remove the
carrier and recover the signal.

High-speed signals are "wide band", i.e. they have significant frequency
content from DC to hundreds of times the modulation rate.  For an ideal
interconnect, filtering is not required to recover the original signal.
(And, although rates are usually given in MHz, they really mean Mbaud.)  

Best regards,
Lynne


"IBIS training when you need it, where you need it."

Dr. Lynne Green
Green Streak Programs
http://www.greenstreakprograms.com
425-788-0412
lgreen22@xxxxxxxxxxxxxx

-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On
Behalf Of johnn william
Sent: Wednesday, August 24, 2005 4:19 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] RF board Vs High speed board

Hi All,
 
Please anyone in group clarify the difference in handling the RF board
compared to normal High speed boards.
 
Thanks in advance.
 
John


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