The PLDRO (Phase Locked Dielectric Resonator Oscillator) provides the ultra-low phase noise and an excellent frequency stability when it is phase-locked to a clean and stable crystal reference signal. The PLDRO provides ideal signal for commercial and military systems that require ultra-low phase noise, low spurious, and high frequency stability.

Our PLDRO series are available in three series: Single Loop PLDRO, Dual Loop PLDRO, and Fractional-N PLDRO. The Dual Loop PLDRO is a phase locked dielectric resonator oscillator whose output frequency is generated by a dual phase locked loop. This PLDRO series provides an output frequency whose phase is locked to an integer or fractional multiple of the external reference using PLCRO (Phase Locked Coaxial Resonator Oscillator) and frequency divider.



●  Integer or fractional multiple of an external reference
●  Ultra low phase noise
●  Low spurious
●  Phase-locked alarm
●  Low current consumption
●  Compact housing
●  Rugged construction



●  17 dBm (typ.) Output Power
●  Extended operating temperature: -20 ℃ to +70 ℃ or -40 ℃ to +85 ℃
●  Field replaceable SMA-jack
●  Customized outlines
●  Laser marking



●  Radar systems
●  VSAT/Satellite communication systems
●  Test equipment
●  Microwave transmitters & receivers
●  Cable TV links (CATV)
●  Local area networks (LAN)
●  Up/Down converters
●  Missile guidance


Outline Drawing


  Dual Loop PLDRO-rev5.0