Low phase noise MMIC VCOs for Ka-band applications with improved GaInP/GaAs-HBT technology

@article{Hilsenbeck2003LowPN,
  title={Low phase noise MMIC VCOs for Ka-band applications with improved GaInP/GaAs-HBT technology},
  author={J. Hilsenbeck and Friedrich Lenk and Wolfgang Heinrich and Joachim Wurfl},
  journal={25th Annual Technical Digest 2003. IEEE Gallium Arsenide Integrated Circuit (GaAs IC) Symposium, 2003.},
  year={2003},
  pages={223-226}
}
We report on the technology and performance of fully monolithic coplanar voltage-controlled oscillators (VCOs) with GaInP/GaAs-HBTs as the active devices. With our optimized HBT process, the parasitic base resistance R/sub B/ and extrinsic base-collector capacitance C/sub EX/ are significantly reduced. In this way, the maximum frequency of oscillation F/sub max/ is increased from 100 to 170 GHz. This allows us to realize fundamental 38 GHz-VCOs with very low phase noise. At an oscillation… CONTINUE READING
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