5.2/5.7-GHz 48-dB Image Rejection GaInP/GaAs HBT Weaver Down-Converter Using LO Frequency Quadrupler

@article{Wu20065257GHz4I,
  title={5.2/5.7-GHz 48-dB Image Rejection GaInP/GaAs HBT Weaver Down-Converter Using LO Frequency Quadrupler},
  author={Tzung-Han Wu and Chinchun Meng},
  journal={IEEE Journal of Solid-State Circuits},
  year={2006},
  volume={41},
  pages={2468-2480}
}
A GaInP/GaAs heterojunction bipolar transistor (HBT) down-converter using the Weaver architecture is demonstrated in this paper. The Weaver system is a double-conversion image rejection heterodyne system which requires no bandpass filters in the signal path and no quadrature networks. The Weaver down-converter has the image rejection ratios of 48 dB and 44 dB when the RF frequency is 5.2 GHz and 5.7 GHz, respectively. A new frequency quadrupler is employed in the down-converter to generate the… CONTINUE READING

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