Electrical funnel: A broadband signal combining method

  title={Electrical funnel: A broadband signal combining method},
  author={E. Afshari and Harish Venkatraman Bhat and Xiaofeng Li and A. Hajimiri},
  journal={2006 IEEE International Solid State Circuits Conference - Digest of Technical Papers},
A non-uniform 2D propagation medium is compatible with modern IC processes and is used to produce a 4-to-1 broadband power combiner called an electrical funnel. The combiner is used in a wideband power amplifier in a 0.13mum SiGe BiCMOS process and yields 125mW peak output power at 85GHz with a 24GHz 3dB bandwidth 



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