Description

The Phase Locked Dielectric Resonator Oscillators (PLDRO) provides the best combination of ultra-low phase noise and excellent frequency stability when it is phase locked to a clean and stable crystal reference signal. The PLDRO series of Polaris provides ideal signal sources for commercial and military systems requiring ultra-low phase noise, low spurious and high frequency stability.
There are three types of PLDRO series we design and manufacture at Polaris: Single Loop PLDRO, Single Loop Digital-PLDRO, and Dual Loop PLDRO.

●  Single Loop PLDRO
The Single Loop PLDRO provides ultra-low phase noise of typically -120dBc/Hz at 10kHz offset from the output frequency of 10GHz when it is phase locked to an external 100MHz crystal reference signal. In addition, two reference options are available. It corresponds to the first option when the external reference is from 50MHz to 500MHz and to the second option when the external reference signal is from 5MHz to <50MHz. The first option offers a slim package consisting of a single bed housing and the second option offers a package consisting of a double bed housing.

●  Single Loop Digital-PLDRO
The Single Loop Digital-PLDRO provides output frequency with very fine frequency resolution of 10KHz (1KHz optional) using DDS(Direct Digital Synthesizer) and Mixer. Also, it is possible to provide output frequency that is a prime number. Because VCXO is not used in this product family, it has the advantage of being able to develop products of various frequencies at a lower cost in a shorter period of time compared with Dual Loop PLDRO using VCXO.

●  Dual Loop PLDRO
The Dual Loop PLDRO 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. This family of product offers a frequency resolution of 500 KHz, but if you need finer frequency resolution, please refer to Single Loop Digital-PLDRO. The Single Loop Digital-PLDRO provides very fine frequency resolution.

Features

●  Ultra low phase noise
●  Low spurious
●  Output frequency: 6GHz to 26GHz
●  Output power: +13dBm minimum
●  Very fine frequency resolution (Single Loop Digital-PLDRO)
●  Phase-locked alarm
●  Internal voltage regulators
●  Compact package
●  Lower than market price

 

Applications

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

Single Loop Digital-PLDRO

,

▪ Very fine frequency resolution of 10KHz (1KHz optional)
▪ Phase shift using DDS & mixer
▪ Ultra low phase noise: -117dBc/Hz at 10KHz offset from
     the carrier at an output frequency of 10GHz
▪ Phase-locked alarm
▪ High efficiency DC-DC converter
▪ Internal voltage regulators

Single Loop PLDRO

,

▪ Ultra low phase noise: -120dBc/Hz at 10KHz offset from
     the carrier at an output frequency of 10GHz
▪ Low spurious: -80dBc maximum
▪ Phase-locked alarm
▪ Internal voltage regulators
▪ Compact package: 2.25"[57.15] x 2.25"[57.15] x .63"[16]
▪ Affordable price

Dual Loop PLDRO

,

▪ Frequency resolution of 500KHz
▪ Ultra low phase noise: -120dBc/Hz at 10KHz offset from
     the carrier at an output frequency of 10GHz
▪ Low spurious: -80dBc maximum
▪ Phase-locked alarm
▪ Internal voltage regulators
▪ Compact package: 2.25"[57.15]x2.25"[57.15]x1.06"[27]