Phase Lock (PLO)

Phase Lock Crystal Oscillators are widely employed in commercial and military applications requiring a precise signal synchronized with a more stable external reference and/or improved phase noise performance. Wenzel Associates’ phase lock oscillators consist of an oven compensated low or ultra-low phase noise crystal oscillator, comparator, loop amplifier and dividers/multipliers for scaling the reference and internal oscillator signals for locking at a common frequency. When a reference is present, the comparator will produce an error voltage which is applied to the varactor of the internal oscillator, and will electrically tune the oscillator until the frequency is matched and phase locked with the reference. Wenzel offers PLO solutions with output frequencies from 5 MHz to 12 GHz. Please contact our technical staff to discuss your specific application needs.
Model Description Application Phase Noise (100 kHz) Size
VHF PLO
VHF PLO
  • Frequencies from 25 MHz to 260 MHz, fixed
  • Standard and Premium Phase Noise
  • Ruggedized for Dynamic Environments
  • Nickel-Plated Machined Aluminum Case
  • SMA(f) and Solder Pins on Side
  • Output: Sine, +13 dBm, Standard
  • Automatic Input Detection
  • LBW: 1 Hz to 100 Hz (Optimized for Best Performance)
  • Low G-Sensitivity to 2E-10/g per axis
  • Dual Output Option
  • Configured for use with Vibration Isolators
Airborne
Radar Systems
Tacticle Radio
Vehicular Communication
System Synchronization
Test Equipment
25 MHz to 130 MHz:
-170 dBc/Hz (Standard)
-176 dBc/Hz (Premium)

130 MHz to 260 MHz:
-163 dBc/Hz (Standard)
-169 dBc/Hz (Premium)
3.5 x 2.5 x 0.8"
Model Description Application Phase Noise (100 kHz) Size
VHF Citrine PLO
VHF Citrine PLO
  • Frequencies from 25 MHz to 160 MHz, fixed
  • Standard, Premium and Golden Phase Noise Options
  • Ruggedized for Dynamic Environments
  • Nickel-Plated Machined Aluminum Case
  • SMA(f) and Solder Pins on Side
  • Optional Voltage Reference and Oven Monitor Pins
  • Output: Sine, +13 dBm, Standard
  • Automatic Input Detection
  • LBW: 1 Hz to 100 Hz (Optimized for Best Performance)
  • Low G-Sensitivity to 2E-10/g per axis
  • Vibration Isolated Version Available
Airborne
Radar Systems
Tacticle Radio
Vehicular Communication
System Synchronization
Test Equipment
-170 dBc/Hz (Standard)
-176 dBc/Hz (Premium)
-188 dBc/Hz (Golden)
2.25 x 2.25 x 1.3"
Model Description Application Phase Noise (100 kHz) Size
HF&VHF PLO
HF and VHF PLO
  • Frequencies: 5 MHz and 100 MHz, Standard
  • Low Phase Noise
  • Ruggedized for Dynamic Environments
  • Nickel-Plated Machined Brass Case
  • Internal HF and VHF OCXOs
  • TTL Control to Select Internal or External Reference
  • VHF OCXO Phase Locked to INT or EXT Reference (TTL Select)
  • SMA(f) and D-Sub on Sides
  • Output: Sine, +10 dBm, Standard
Up/Down Converters
GPS Receivers
System Synchronization
Test Equipment
-165 dBc/Hz (5 MHz),
-170 dBc/Hz (100 MHz)
2.5 x 6 x 0.9"
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