Testing Phase Noise of

Ultra Low Phase Noise OCXOs

Challenges and Solutions

Cross correlation technique is used to
test phase noise of ULPN OCXOs

Four test instruments are evaluated:

• Noise XT DCNTS

• Agilent E5052B

• Symmetricomm's 5120A-01

• Anapico APPH6000

Each is rated in terms of:

• Accuracy

• Speed

• Ease of use

• Range

• Cost

• Ease of data retrieval

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X-Band Frequency Synthesizer

Extremely Low Close-in Phase Noise

120 x 70 x 35 mm
N-DCN-DC922-102 (V2) – IR

Specifications

• 8.6 to 9.2 GHz

• Phase Noise
• ≤ -95 dBc/Hz at 100 Hz
• ≤ -105 dBc/Hz at 1 KHz
• ≤ -120 dBc/Hz at 10 KHz
• ≤ -123 dBc/Hz at 100 KHz

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