Interesting question and there is a corollary to it. If a crystal
oscillator is stepped up in frequency, with PLL circuitry for example, now
what is the highest frequency.
My current opinion is that for Amund's question it is the crystal
frequency, and to mine, it is the PLL frequency. IN both cases they
represent the highest repetitive clock speed or digitally generated
frequency.
Interested in seeing the other responses.
Gary
-----Original Message-----
From: [email protected] [mailto:[email protected]]
Sent: Wednesday, August 01, 2001 1:19 PM
To: [email protected]
Subject: FCC - radiated emission up to 10th harmonic
Dear members,
FCC 2.1057 is about radiated emission. They say :"If the equipment operates
below 10GHz: to the tenth harmonic of the highest fundamental frequency or
to 40
GHz, whichever is lower".
I ask: Highest fundamental frequency, is it the crystall oscillator with
highest frequency or is it the highest operating frequency within the EUT
(after mixing, muliplier, etc..) ?
Best regards
Amund Westin
Oslo, Norway
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