APULN High Performance Signal Generator - up to 40 GHz

Ultra-Low Noise Microwave Signal Generators from 100 kHz up to 12.75, 20, 26 or 40 GHz




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The APULN is a high-performance analog signal generator (analog signal source) series covering RF and microwave frequency ranges from 100 kHz (optionally 8 kHz)  to 12.75, 20, 26 and 40 GHz. A combination of characteristics such as good signal purity, ultra-low phase noise, high output power and fast switching speed, along with their very compact size, low weight and low power consumption makes the instruments very well usable in labs, manufacturing, and outdoor fields.



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

  • OCXO stabilized low phase noise signal with mHz resolution
  • wide and accurately levelled output power range
  • extensive modulation capabilities such as AM, FM, PM, pulse, and frequency chirp but also configurable pulse sequences
  • fast switching of 25 µs
  • sweep, trigger functions and user-programmable external reference frequency between 5 to 250 MHz
  • low power consumption and low power dissipation; allowing for the use of battery power bank for DC power supply in case of outdoor field applications
  • 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)

The APULN RF and microwave signal generators are suitable for many applications in labs, production halls and outdoor field:

  • as general purpose portable RF signal sources for demanding testing of electronic, wireless, satellite modules and systems
  • EMC/EMI testing
  • service and maintenance and verifications
  • signal simulation (radar, analogly modulated radio, wireless and satellite, aerospace & defense, etc.)
  • especially the 19″ rack-mountable version for system integration






Frequency Range

100 kHz (or 8 with option 8K) to 12.75, 20, 26, or 40 GHz

Frequency Resolution

0.001 Hz

Power Range

-20 to +25 dBm, -80 to +25 dBm (with option PE4)

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

-130 dBc/Hz

Phase Noise At 1 GHz: at 20 kHz offset

-145 dBc/Hz

Phase Noise At 1 GHz: at 100 kHz offset

-150 dBc/Hz

Remote Control

Ethernet, GPIB (SCPI v1990), USB


AM, FM, PM, Pulse


Frequency, List, Power

Dimensions (W x L x H), Weight

173.6 x 277 x 113 mm [6.83 x 10.9 x 4.45 in], 2.5 kg




• Ideal ADC clock
• Ultra-low phase noise LO
• Radar receiver testing



• Excellent signal purity: ultra-low phase noise and low spurious
• Combination of highest output power and fastest switching
• Powerful touch-display control
• Portable, external battery modules available








1URM 19″ 1HU rack-mount module
8K Frequency range extension to 8 kHz
BAG AnaPico Bag
DATA Commercial Calibration Certificate with test data
EB External power bank adapter cable
FILT Harmonic filtering
FLASH MicroSD card slot for removable SD memory
FS Ultra-fast switching speed
GPIB GPIB interface
IEC IEC 17025 calibration with certificate
LN Enhanced close in phase noise & frequency stability
LN+ Enhanced close in phase noise & further enhanced long term frequency stability
MOD Analog modulation
NEC Fast switching speed, pulsed chirps, narrow pulse (no export control)
PE Mechanical step attenuator down to -90 dBm
PE2 Mechanical step attenuator down to -120 dBm
PE4 Electrical step attenuator (not in combination with option FILT)
REAR Move output to rear panel
RECAL Recalibration with test data (recommended: 2 years interval)
RM 19’’ 3HU rack-mount kit
Retrofit Applies when options are back-ordered
VREF Variable external reference
WE One year warranty extension (standard: 2 years)
APULN12 100 kHz to 12.75 GHz
APULN20 100 kHz to 20 GHz
APULN26 300 kHz to 26 GHz
APULN40 300 kHz to 40 GHz



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