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Spartech-South Flyer Issue #72

Custom MMIC offers GaN amps at significantly higher voltages which need lower peripheries and are thus easier to match with much broader bandwidth.
  • 100 μm 4-H SiC Substrates
  • 0.2 μm T-Gate
  • 65 GHz fT
  • 1 A/mm Imax
  • Vgdbr > 90 Volts
  • Eutectic die attach available

Freq: 35 GHz
Gain: 25 dB
Power: 5.9 Watts
PAE: 41%
Vdd = 24 V
Vgg = -3.5 V
Iq = 450 mA
Pulse = 10 μs
PRF = 1000 μs
CW Mode with reduced specs
MTTF > 109 hours
Custom MMIC utilized a previous SBIR contract to develop accurate models for the devices allowing a design for either linearity or efficiency depending on application.

  • 6 - 18 GHz
  • Gain = 18 dB Typ.
  • Noise Figure = 3 dB Typ.
  • Output P1dB = 18 dBm Typ.
  • Phase Noise <-160 dBc/Hz
    @ 10kHz Offset
  • Supply Current = 76 mA
SP5T Non-Reflective Switch - CMD235C4
  • DC - 18 GHz
  • Loss = 2.5 dB Typ.
  • Isolation = 40 dB Typ.
  • Input P1dB = 21 dBm
  • Non-reflective
  • Integrated 3:8 decoder
Custom MMIC has space heritage on the Sky Muster broadband internet satellite launched in 2015.


  • 26 - 34 GHz 
  • Gain = 22 dB Typ.
  • Noise Figure = 1.7 dB Typ.
  • MIL-PRF-38534 Class K &  MIL-PRF-38535 Class S