RAFS

Rubidium Oscillator by Orolia | Visit website (6 more products)

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The RAFS (Rubidium Atomic Frequency Standard) from Orolia is a state-of-the-art ultra-stable atomic clock that provides excellent stability. It’s designed with the latest technologies, providing advanced features, such as long lifetime, high reliability, lightweight and ultra low phase noise, for next-generation space applications.

The Rb clock essentially consists of a voltage-controlled crystal oscillator (VCXO) which is locked to a highly stable atomic transition in the ground state of the Rb87 isotope. While the frequency of the VCXO is at the convenient standard frequency of 10 MHz, the Rb clock frequency is at 6.834 GHz in the microwave range. The link between the two frequencies is done through a phase-stabilized frequency multiplication scheme whereby a synthesized frequency is admixed to enable exact matching.

The Rb clock essentially consists of a voltage-controlled crystal oscillator (VCXO) which is locked to a highly stable atomic transition in the ground state of the Rb87 isotope. While the frequency of the VCXO is at the convenient standard frequency of 10 MHz, the Rb clock frequency is at 6.834 GHz in the microwave range. The link between the two frequencies is done through a phase-stabilized frequency multiplication scheme whereby a synthesized frequency is admixed to enable exact matching.

Product Specifications

Product Details

  • Part Number
    RAFS
  • Manufacturer
    Orolia
  • Description
    High-Performance, Space-Qualified Rubidium Atomic Frequency Standard

General Parameters

  • Frequency
    10 MHz
  • Output Waveform
    Sinewave
  • Output Power
    13 dBm
  • Grade
    Space Qualified, Military
  • Supply Voltage
    28 to 50 V
  • Harmonics
    -40 dBc
  • Spurious
    -80 to -60 dB
  • Phase Noise
    -145 to -90 dBc/Hz
  • Phase Noise 1 kHz
    -140dBc/Hz
  • Phase Noise 10 kHz
    -145dBc/Hz
  • Phase Noise 100 Hz
    -130dBc/Hz
  • Short Term Stability
    0.00003 to 0.005 ppb
  • Short Term Stability 100s
    0.0003 to 0.0005 ppb
  • Short Term Stability 10s
    0.001 to 0.013 ppb
  • Short Term Stability 1s
    0.003 to 0.005 ppb
  • Return Loss
    20 dB
  • Interface
    SUB-D 09, SUB-HD 44
  • Application
    Navigation satellites, Space scientific missions, Military communication satellites, Tracking and guidance control, Advanced low orbit digital communication
  • Package Type
    Module with Connector
  • Connector
    SMA
  • Dimension
    217 x 124 x 117 mm
  • Weight
    3.4 Kg
  • Operating Temperature
    -5 to 10 Degree C
  • Storage Temperature
    -15 to 70 Degree C
  • Note
    Cold Start : -21 Degree C, Power Dissipation : 35 to 60 W

Technical Documents