100 kHz to 20 GHz Signal Generator APSIN20G

The APSIN20G is a low-noise and fast-switching microwave signal generator covering a frequency range from 100 kHz up to 20 GHz. The APSIN20G provides a mHz frequency resolution, a wide and accurately leveled output power range, and low spurious levels. It is targeted for applications where a high-quality CW microwave source with analog modulation is required. The APSIN20G includes AM; DC-coupled wideband-FM, PM, FSK and PSK, and fast pulse modulation as standard. Optionally, frequency chirps and programmable pulse trains get be executed. The APSIN20G operates with an ultra-stable temperature compensated 100 MHz reference (OCXO) and can be phase-locked to any external reference from 1 to 250 MHz. Available also as truly portable model with internal rechargeable battery module, this instrument offers a reliable and powerful alternative to expensive high-end microwave signal generators, where small size and excellent microwave performance at an attractive cost is required.

Maximum Output Power with option HP

Phase Noise with option LN


  • Only 30 µs frequency switching time
  • Very low SSB phase noise: -113 dBc/Hz at 20 GHz and 100 kHz offset
  • Comprehensive AM, low-distortion, wideband DCFM, and high speed pulse modulation for testing all types of receivers
  • LAN/USB/GPIB (optional) remote control with SCPI 1999 command set
  • Input for USB power sensor
  • Powerful trigger and sweeping modes


  • R&D low noise signal source
  • Production testing (industry-leading switching times; high dynamic range)
  • Service and maintenance
  • Signal simulation (Radar, WiMax, UWB)
  • Aerospace & Defense (Pulse modulator, Chirps)


  • HP: higher output power option
  • PE3: extended power range down to -90 dBm (Step Attenuator added)
  • NM: remove of modulation
  • LN: ultra low phase noise
  • FS: enhanced switching speed
  • B3: battery module
  • GPIB: IEEE-488.2,1987 programming interface
  • 1URM: 1U rackmount case
  • TP: 3U case with touch panel


Range100 kHz to 20 GHz
Resolution 0.001 Hz
Accuracy 0.1 ppm
Range-20 dBm to +15 dBm
-90 dBm to > +13 dBm with option PE3
-20 dBm to > +25 dBm with option HP
Resolution 0.01 dB
Accuracy < 1 dB
Switching speed30 µs with option FS
SSB Phase noise at 20 GHz
at 10 Hz from carrier -74 dBc/Hz with option LN
at 1 kHz from carrier -100 dBc/Hzwith option LN
at 100 kHz from carrier -113 dBc/Hz with option LN
at 10 MHz from carrier -130 dBc/Hz with option LN
SweepsList, Frequency, Power
ModulationAM, FM, PM, Pulse, Chirp
Remote controlEthernet, USB, GPIB, SCPI