Spectral purity
Specification
Harmonics
Residual FM (FM off)
SSB phase noise
Typically better than −30 dBc for levels up to +7 dBm,
typically better than −25 dBc for levels 6 dB below the maximum specified output.
Better than −70 dBc for carrier frequencies up to 1 GHz, better than −64 dBc for carrier frequencies above 1 GHz, better than −60 dBc for carrier frequencies above 2 GHz.
Less than 4.5 Hz RMS in a 300 Hz to 3.4 kHz bandwidth at a carrier frequency of 1 GHz.
Better than −124 dBc/Hz at 20 kHz offset from a 470 MHz carrier. Typically −121 dBc/Hz at 20 kHz offset from a 1 GHz carrier.
Test equipment
Description | Minimum specification | Example |
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Spectrum | DC to 7.2 GHz frequency coverage | Anritsu MS2602A |
analyzer |
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Measuring | 0 dBm to −127 dBm; 2.5 MHz to 2.4 GHz Capable | Agilent 8902A |
receiver | of measuring residual FM less than 2 Hz and SSB | with option 037 |
| phase noise <−124 dBc/Hz at 20 kHz offset from a |
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| 1 GHz carrier |
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Signal generator | +8 dBm from 32.5 MHz to 2.43 GHz | IFR 2041 |
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Harmonics
Test procedure
UUT |
RF OUT |
Spectrum analyzer |
RF INPUT |
C5357 |
Fig. 5-4 Carrier harmonics and non-harmonics test set-up
(1)Press CAL on the spectrum analyzer.
(2)Connect the test equipment as shown in Fig.
(3)On the UUT set:
Carr Freq | 10 kHz |
RF Level | −4 dBm |
