Passive Mixers Increase Gain and Decrease Noise When Compared to Active Mixers in Downconverter Applications

@inproceedings{Schiltz2010PassiveMI,
  title={Passive Mixers Increase Gain and Decrease Noise When Compared to Active Mixers in Downconverter Applications},
  author={Tom Schiltz and Bill Beckwith and Xudong Wang and Doug Stuetzle},
  year={2010}
}
ACTIVE VERSUS PASSIVE MIXERS Most integrated-circuit mixers are based on an active or current-commutating topology. Linear Technology has a wide portfolio of active mixers, such as the LT5527 and LT5557, which are widely accepted due to their ease of use and low power consumption. Nevertheless, their 2dB–3dB of conversion gain is not enough for some wireless infrastructure designs. Furthermore, active mixers typically exhibit higher NF than passive mixers at comparable linearity. LTC554x mixers… CONTINUE READING