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Standard Phase-Locked Oscillator Products (Basic product description)

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

 

Phase-locked oscillators with digital dividers:

 

 

 

Phase-locked oscillators with a harmonic multiplier:

 

 

Dual loop phase-locked oscillators:

 

 

The implementation of a specific PLO depends on its specific set of requirements.  These usually are; available reference (or no reference when an internal reference is required), the desired output frequency, the desired phase noise, output power level, etc.

The output frequency required will determine the selection of the appropriate fundamental oscillator to be used in the PLO.

 

 

PLXO - Crystal Oscillators 10 to 300 MHz frequency range

  • Very Stable

  • The best available phase noise 

  • Moderate cost

 

 

PLLCO  - LC Oscillators 10 MHz to 500 MHz frequency range

  • Moderate Stability

  • Phase noise 10-20 db greater then either the DRO or CRO

  • Very low cost

 

 

PLCRO - Ceramic Resonator Oscillators 500 to 6000 MHz frequency range

  • Very Stable

  • Excellent phase noise

  • Low cost

 

 

PLDRO - Dielectric Resonator Oscillators 5 to 12 GHz frequency range

  • Very stable

  • Excellent phase noise

  • Moderate cost

 

 

We have extensive experience with all aspects of phase-locked oscillator design and manufacture.