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Frequency synthesis chain for ESA deep space network

Frequency synthesis chain for ESA deep space network

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A report is presented on the measurement of a frequency synthesiser that provides round frequencies (10 GHz, 5 MHz, 100 MHz) with high spectral purity from a cryocooled sapphire oscillator in the vicinity of 10 GHz. The synthesiser and sapphire oscillator are a part of Elisa, a frequency reference that exhibits a stability of parts in 10−15 from 1 s to 1000 s integration time, designed and implemented for the European Space Agency. The synthesiser features low 1/f phase noise, −96 dBc/Hz at 1 Hz off the carrier at the 10 GHz output, and −133 dBc/Hz at 1 Hz offset at the 100 MHz output.

References

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      • C.L. Thornton , J.S. Border . (2003) Radiometric tracking techniques for deep space navigation.
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    6. 6)
      • J. Develet . Fundamental accuracy limitations in a two way coherent Doppler measurement system. IRE Trans. Space Electron. Telemetry , 3 , 80 - 85
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