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Analysis and design of power harvesting circuits for ultra-low power applications

Razavi Haeri, A. A ; Sharif University of Technology | 2017

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  1. Type of Document: Article
  2. DOI: 10.1109/TCSI.2016.2609144
  3. Publisher: Institute of Electrical and Electronics Engineers Inc , 2017
  4. Abstract:
  5. This paper presents an analytical model for power harvester circuits used in Ultra-low power applications. Assuming that the MOS devices of the circuit fully operate in the Sub-threshold regime in both forward and reverse regions, closed-form equations for important properties of the rectifier circuit such as output voltage, efficiency and input resistance are derived. The model includes the effect of the compensation voltage on the circuit behavior. There is a good agreement between the simulation results and the model. In addition, the contour plots needed to simultaneously optimize the matching network and the rectifier circuit are derived by the resulting equations. A 50-Stage rectifier was fabricated in a 180-nm standard CMOS Process. The proposed model is verified with the measurement results. The model has a maximum error of 10% in comparison with the circuit simulation, and a maximum error of 12% with the measured values. © 2004-2012 IEEE
  6. Keywords:
  7. Dickson circuit ; Quality factor ; Sub-threshold conduction ; Circuit simulation ; Computer circuits ; Electric network analysis ; Energy harvesting ; Low power electronics ; MOS devices ; Rectifying circuits ; Threshold voltage ; Timing circuits ; Circuit behaviors ; Closed-form equations ; Compensation voltage ; Power harvesting ; Quality factors ; Standard CMOS process ; Subthreshold ; Ultralow power application ; Electric rectifiers
  8. Source: IEEE Transactions on Circuits and Systems I: Regular Papers ; Volume 64, Issue 2 , 2017 , Pages 471-479 ; 15498328 (ISSN)
  9. URL: https://ieeexplore.ieee.org/document/7636979