APLC Agile Ultra-Low Phase Noise Signal Source - up to 40 GHz

100 kHz to 12.75, 20 or 40 GHz Agile Ultra-low Phase Noise Signal Generator




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The APLCXX is an agile ultra-low phase noise signal generator from 100 kHz to 12.75 (APLC12), 20 (APLC20), or 40 GHz (APLC40) with excellent harmonic and spurious performance.The signal source is available as mountable module or in a compact enclosure with display and front panel control.Using the FCP – fast control port, frequency and amplitude the unit can be switched within less than 10 µs.The multi-channel version APLCXX-X is available in 1, 2, 3 or 4 channel configurations in a standard 1HU 19’’ rack-mountable enclosure.



The APLCXX is an agile ultra-low phase noise signal generator from 100 kHz to 20 (APLC20), or 40 GHz (APLC40). Excellent harmonic and spurious performance in combination with fast switching make the instruments very well usable in labs or production facilities.

The main features of these RF and microwave signal generators (RF and mw signal sources) are:

  • OCXO <30 ppb/yr aging
  • wide and accurately levelled output power range
  • fast switching of <10 µs (option FS)
  • sweep, trigger functions and user-programmable external reference frequency between 1 to 250 MHz
  • low power consumption and low power dissipation
  • various mechnical housing forms: portable / bench-top, 19″ rack-mountable, etc.
  • local front panel operation, PC controlled local or remote operation through the communication ports USB, Ethernet and optionally GPIB, and by using GUI Software or ATE commands (SCPI 1999)







Frequency Range

100 kHz to 12.75, 20 or 40 GHz

Frequency Resolution

0.001 Hz

Power Range

-60 to +15 dBm

Power Resolution

0.01 dB

Switching Speed

200 μs (10 μs with option FS)

Phase Noise At 1 GHz: at 10 Hz offset

-87 dBc/Hz (-100 dBc/Hz with option LN)

Phase Noise At 1 GHz: at 1 kHz offset

-140 dBc/Hz

Phase Noise At 1 GHz: at 100 kHz offset

-152 dBc/Hz

Phase Noise At 1 GHz: at 10 MHz offset

-150 dBc/Hz

Remote Control

Ethernet, Fast Control Port FCP, GPIB, USB


AM, FM, PM, Pulse


Frequency, List

Dimensions (W x L x H), Weight

182 x 271.1 x 124 mm [7.17 x 10.67 x 4.88 in], 2.5 kg




• R&D low noise signal source
• Production testing
• Service and maintenance
• Signal simulation
• Aerospace & Defense
• Installation and maintenance



• High output power, low phase noise
• Comprehensive AM, low-distortion, wideband DC-FM, and high-speed pulse modulation
• Powerful trigger and sweeping modes
• Portable battery operation









FLASH MicroSD card slot for removable SD memory
FS Fast switching option (with FCP – fast control port)
GPIB GPIB interface (only with option TOUCH or as 1U rack-mount)
LN Enhanced frequency stability, improved close-in phase noise
LN+ Enhanced close in phase noise & further enhanced long term frequency stability
MOD Analog modulation capability added
PE Mechanical step attenuator down to -90 dBm
PE2 Mechanical step attenuator down to -120 dBm
ReCal Recalibration with test data (recommended: two years interval)
VREF Flexible external reference frequency support in range 1 to 250 MHz
WE One year warranty extension (standard: 2 years)
APLC12 100 kHz – 12.75 GHz
APLC20 100 kHz – 20 GHz
APLC40 100 kHz – 40 GHz



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