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Phase-Locked Oscillator Products (Basic product description)

Luff Research offers phase-locked oscillators (PLO) that span the 10 MHz to 24 GHz frequency range.  PLO's are realized in one of the three architectures show below:


Phase-locked oscillators with digital Phase-lock IC:

 

 

    straight forward PLL implementation

    moderate performance

 

 OR

 

    high frequency capabilities

    moderate performance

 

 

Phase-locked oscillators with analog sampling phase detector:

 

    analog PLL implementation

     best possible performance

    Fr typically 100 MHz

 

Dual loop phase-locked oscillators:

     analog PLL implementation

     10 MHz reference or int. reference

     best possible performance

 

The implementation of a specific PLO depends on its specific set of requirements.  These usually are;

-output frequency

-external reference frequency (or internal reference frequency requirements)

 -required spectral quality (phase noise, spurious and harmonics)

-power output

-environmental requirements 

PLO requirements will determine the selection of the appropriate fundamental oscillator to be used.  These fundamental oscillators operate over the frequency ranges shown.

 

PLXO - Crystal Oscillators 10 to 1400 MHz

  • very stable

  • the best available phase noise 

  • moderate cost

 

PLLCO  - LC Oscillators 10 MHz to 750 MHz

  • moderate stability

  • phase noise depends on Q realized

  • very low cost

 

 

PLCRO - Coaxial Resonator Oscillators 0.5 to 7 GHz

  • very stable

  • excellent phase noise

  • moderate cost

 

 

PLDRO - Dielectric Resonator Oscillators 6 to 16 GHz

  • very stable

  • excellent phase noise

  • moderate cost

 

 


PLVCO - Voltage Controlled Oscillators 10 MHz to 14 GHz

  • moderate stability

  • moderate phase noise

  • very low cost