Design and analysis of UHF micropower CMOS DTMOST rectifiers

  • Authors:

  • Ying-Khai Teh;Faisal Mohd-Yasin;Florence Choong;Mamun Ibne Reaz;Albert V. Kordesch

  • Affiliations:

  • Faculty of Engineering, Multimedia University, Cyberjaya, Malaysia;Faculty of Engineering, Multimedia University, Cyberjaya, Malaysia;Faculty of Engineering and Science, University of Tunku Abdul Rahman, Kuala Lumpur, Malaysia and Faculty of Engineering, Multimedia University, Cyberjaya, Malaysia;Department of Electrical, Electronic and Systems Engineering, National University of Malaysia, Bangi, Malaysia;Device Modeling Department, Silterra Malaysia, Kulim, Malaysia

  • Venue:
  • IEEE Transactions on Circuits and Systems II: Express Briefs
  • Year:
  • 2009

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Abstract

Design and analysis of ultrahigh-frequency (UHF) micropower rectifiers based on a diode-connected dynamic threshold MOSFET (DTMOST) is discussed. An analytical design model for DTMOST rectifiers is derived based on curve-fitted diode equation parameters. Several DTMOST six-stage charge-pump rectifiers were designed and fabricated using a CMOS 0.18-µm process with deep n-well isolation. Measured results verified the design model with average accuracy of 10.85% for an input power level between -4 and 0 dBm. At the same time, three other rectifiers based on various types of transistors were fabricated on the same chip. The measured results are compared with a Schottky diode solution.