
Phase Noise Without Using a PLL
Define Msrmnt
SOURCE AND INTER!
FNTFK' THF Full OWING ffipflHETER;:
lar r ier frequency
ig K..E-
.
:
in Fi
--spt^i-il-
Va
■SELLC
1
fl
F'HfiSE
DETECTOR.
Internal
Phas* Detector;
5
MHs
to
1600
MHz
Internal Ptia&? Detector :
External F'ha&■=■
/PI*
1
Qie
1
e■:
1
1.2 ':.Hz t'j !-] GHz
".-, ^run- -,-■ MPW-EMEN' L'E
L
[Nil luti
Frequency Parameters
Carrier Frequency is the fundamental (center) frequency of the device you
are measuring. The HP 3048A uses the Carrier Frequency entry to:
• Label the Carrier Frequency on the Results Graph.
• Select the correct bandpass filter for the HP 11729C, when it is
configured in the system as a Down Converter.
• Calculate Sigma vs. Tau and S
y
(f).
instr. Params: $N w/o PLL 2-31
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