Volume 35 Issue 4
Apr.  2009
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Song Dan, Zhang Xiaolin. Ultra-low voltage ultra-low power NMOS bulk-biased mixer[J]. Journal of Beijing University of Aeronautics and Astronautics, 2009, 35(4): 480-484. (in Chinese)
Citation: Song Dan, Zhang Xiaolin. Ultra-low voltage ultra-low power NMOS bulk-biased mixer[J]. Journal of Beijing University of Aeronautics and Astronautics, 2009, 35(4): 480-484. (in Chinese)

Ultra-low voltage ultra-low power NMOS bulk-biased mixer

  • Received Date: 22 Apr 2008
  • Publish Date: 30 Apr 2009
  • By using two pairs of NMOSs and the bulk-biased technology, an ultra-low voltage ultra-low power NMOS bulk-biased mixer (NBBM), applied to some satellite navigation dual-system compatible receiver, was implemented in SMIC 0.18 μm CMOS process. The GPS system was included: the frequency of the radio frequency (RF) signal, local oscillator (LO) signal and the intermediate frequency (IF) signal is 1575.42MHz, 1570MHz and 5.42MHz, respectively. Measurement results show that the circuit with the resistive 1000Ω termination consumes approximate 1.37mA under the supply voltage of 1V, the conversion gain ( GC ) is higher than 2.11dB, and the input 1dB compression point ( P in-1dB) is about -13dBm. For the mixer including operational amplifiers GC can rise to more than 14dB, which comes along with the worse linearity, more power consumption and larger area.

     

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