Phase noise – Agilent Technologies N9010A User Manual
Page 53
Chapter 1
53
Agilent EXA Signal Analyzer
Dynamic Range
Phase Noise
Description
Specifications
Supplemental
Information
Phase Noise Noise
Sidebands
(Center Frequency = 1 GHz
a
Best-case Optimization
b
Internal Reference
c
)
a. The nominal performance of the phase noise at center frequencies different than the one at which the
specifications apply (1 GHz) depends on the center frequency, band and the offset. For low offset fre-
quencies, offsets well under 100 Hz, the phase noise increases by 20
× log[(f + 0.3225)/1.3225]. For
mid-offset frequencies such as 10 kHz, band 0 phase noise increases as 20
× log[(f + 5.1225)/6.1225].
For mid-offset frequencies in other bands, phase noise changes as 20
× log[(f + 0.3225)/6.1225] except
f in this expression should never be lower than 5.8. For wide offset frequencies, offsets above about
100 kHz, phase noise increases as 20
× log(N). N is the LO Multiple as shown on
; f is in GHz
units in all these relationships; all increases are in units of decibels.
b. Noise sidebands for lower offset frequencies, for example, 10 kHz, apply with the phase noise optimi-
zation (
PhNoise Opt
) set to
Best Close-in
φ Noise
. Noise sidebands for higher offset frequencies, for
example, 1 MHz, as shown apply with the phase noise optimization set to
Best Wide-offset
φ Noise
.
c. Specifications are given with the internal frequency reference. The phase noise at offsets below 100 Hz
is impacted or dominated by noise from the reference. Thus, performance with external references will
not follow the curves and specifications. The internal 10 MHz reference phase noise is about
–120 dBc/Hz at 10 Hz offset; external references with poorer phase noise than this will cause poorer
performance than shown.
Option 532, or 544 (mmW)
Option 503, 507, 513, or 526 (RF/
μW)
20 to 30
°C
Full range
Typical
100 Hz
x
x –84 dBc/Hz
–82 dBc/Hz
–88 dBc/Hz
1 kHz
x
–98 dBc/Hz (nominal)
1 kHz
x
−101 dBc/Hz (nominal)
10 kHz
x
–99 dBc/Hz
–98 dBc/Hz
–102 dBc/Hz
10 kHz
x
–103 dBc/Hz
–101 dBc/Hz
–106 dBc/Hz
100 kHz
x
–112 dBc/Hz
–111 dBc/Hz
–114 dBc/Hz
100 kHz
x
–115 dBc/Hz
–114 dBc/Hz
–116 dBc/Hz
1 MHz
x
–132 dBc/Hz
–131 dBc/Hz
–135 dBc/Hz
1 MHz
x
–135 dBc/Hz
–134 dBc/Hz
–137 dBc/Hz
10 MHz
x
–143 dBc/Hz (nominal)
10 MHz
x
–149 dBc/Hz (nominal)