Quonset Microwave
www.quonsetmicrowave.com
QM2010-6000
USB RF Synthesizer Module
25 MHz – 6 GHz output
Figures 1 and 2 illustrate the performance difference between integer and fractional mode when tuning to 3
GHz with a 50 MHz reference. In order to tune to 3 GHz with a 50 MHz reference, the user can either operate
in integer mode with a reference divider of 1, or in fractional mode. Figure 1 depicts the phase noise
differences between 3 GHz in fractional mode vs. integer mode with a reference divider of 2, whereas Figure 2
shows the spurious content difference in a 50 MHz span between the two modes of operation.
Figure 2 –
Fractional vs. Integer Mode Spectrum
10 MHz span, RBW = 10 kHz, VBW = 300 Hz
Figure 1
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Fractional vs. Integer Mode Phase Noise
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Revised Dec 23, 2015
For price, delivery, and to place orders, please contact Quonset Microwave: a subsidiary of Applied Radar, Inc.
315 Commerce Park Road, North Kingstown, RI 02852 Phone: 401-295-0062