Subharmonically pumped CMOS frequency conversion (up and down) circuits for 2-GHz WCDMA direct-conversion transceiver

@article{Koh2004SubharmonicallyPC,
  title={Subharmonically pumped CMOS frequency conversion (up and down) circuits for 2-GHz WCDMA direct-conversion transceiver},
  author={Kwang-Jin Koh and Mun-Yang Park and Cheon-Soo Kim and Hyun-Kyu Yu},
  journal={IEEE Journal of Solid-State Circuits},
  year={2004},
  volume={39},
  pages={871-884}
}
Subharmonically pumped frequency down- and upconversion circuits are implemented in 0.18-/spl mu/m mixed-mode CMOS technology for 2-GHz direct-conversion WCDMA transceiver applications. These circuits operate in quadrature double-balanced mode and a required octet-phases (0/spl deg/, 45/spl deg/, 90/spl deg/, 135/spl deg/, 180/spl deg/, 225/spl deg/, 270/spl deg/, and 315/spl deg/) local oscillator (LO) signal comes from an active multiphases LO generator composed of a polyphase filter and… CONTINUE READING
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