Millimeter-Wave Lange and Ring-Hybrid Couplers in a Silicon Technology for E-Band Applications

@article{Chirala2006MillimeterWaveLA,
  title={Millimeter-Wave Lange and Ring-Hybrid Couplers in a Silicon Technology for E-Band Applications},
  author={M. Chirala and B. A. Floyd},
  journal={2006 IEEE MTT-S International Microwave Symposium Digest},
  year={2006},
  pages={1547-1550}
}
Five compact millimeter-wave 90deg and 180deg distributed couplers are realized in the back-end-of-the-line of a 0.13mum SiGe BiCMOS technology. Lange couplers smaller than 160 mum on a side have been implemented showing -4 dB through, -5 dB coupling, 14 dB return loss, and 15 dB isolation for 60- and 77-GHz versions. Ring hybrids with phase-inverters have been implemented showing -4 dB through, -5.6 dB coupling, 18 dB return loss, and 21 dB isolation for 60- and 77-GHz versions. The rings are… CONTINUE READING
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