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[Author] Ruohe YAO(6hit)

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  • Pseudo-CMOS with Re-Pull-Down Transistor: A Low Power Inverter Design for Thin-Film Transistors

    Lihao ZHONG  Ruohe YAO  Fei LUO  

     
    BRIEF PAPER-Electronic Circuits

      Vol:
    E99-C No:6
      Page(s):
    727-729

    In order to further optimize the power consumption of Pseudo-CMOS inverter, this paper proposes a Re-Pull-Down transistor scheme. Two additional transistors are used to build another pull-down network. With this design, the quiescent current of the inverter can be reduced while the ratioless nature is preserved. Based on the reduced input gate area, two output transistors are set wider to compensate for the pull-up speed. The simulation result shows that, compared with Pseudo-CMOS inverter, the maximum quiescent current of the Re-Pull-Down transistor scheme inverter is reduced by 37.6% in the static analysis. Besides, the average power consumption is reduced by 30.8% in the 5-stage ring oscillator test.

  • Trigger Circuit of Hardware Trojan Based on Up/Down Counter

    Zhe HUANG  Ruohe YAO  Fei LUO  

     
    BRIEF PAPER-Electronic Circuits

      Vol:
    E98-C No:3
      Page(s):
    279-282

    A new trigger circuit based on up/down counter is proposed. This trigger circuit consists of a up/down counter and a pulse conversion circuit. Compared with a trigger circuit based on 32-bit counter, the proposed trigger circuit occupies less circuit area and consumes less power consumption, while the trigger process can be inversed, increasing the controllability of the Trojan.

  • A ROM Driving Circuit for RFID Tags Based on a-IGZO TFTs

    Shaolong LIN  Ruohe YAO  Fei LUO  

     
    BRIEF PAPER-Electronic Circuits

      Vol:
    E100-C No:9
      Page(s):
    746-748

    This paper proposes a read-only memory driving circuit for RFID tags based on a-IGZO thin-film transistors. The circuit consists of a Johnson counter and monotype complementary gates. By utilizing complementary signals to drive a decoder based on monotype complementary gates, the propagation delay can be decreased and the redundant current can be reduced. The Johnson counter reduces the number of registers. The new circuit can effectively avoid glitch generation, and reduce circuit power consumption and delay.

  • Low-Complexity Sign Detection Algorithm for RNS {2n-1, 2n, 2n+1}

    Minghe XU  Ruohe YAO  Fei LUO  

     
    BRIEF PAPER-Electronic Circuits

      Vol:
    E95-C No:9
      Page(s):
    1552-1556

    Based on a reverse converter algorithm derived from the New Chinese Remainder Theorem I, an algorithm for sign detection of RNS {2n-1, 2n, 2n+1} is presented in this paper. The hardware of proposed algorithm can be implemented using two n-bit additions and one (n+1)-bit comparator. Comparing with the previous paper, the proposed algorithm has reduced the number of additions used in the circuit. The experimental results show that the proposed circuit achieves 17.3% savings in area for small moduli and 10.5% savings in area for large moduli on an average, with almost the same speed. The power dissipations obtain 12.6% savings in average.

  • Low-Voltage Class-AB CMOS Output Stage with Tunable Quiescent Current

    Zhenpeng BIAN  Ruohe YAO  Fei LUO  

     
    LETTER-Electronic Circuits

      Vol:
    E93-C No:8
      Page(s):
    1375-1376

    A low-voltage class-AB CMOS output stage with a tunable quiescent current control circuit is presented. It is based on a complementary common source. The quiescent current is detected by a compact circuit and can be adjusted by means of a control current without need to modify the transistor dimensions. The minimum supply voltage can be down to one threshold voltage plus two saturation voltages. It is suitable to drive low resistive loads. Simulation results are provided that are in agreement with expected characteristics.

  • Soft-Start Circuit Based on Switched-Capacitor for DC-DC Switching Regulator

    Zhenpeng BIAN  Ruohe YAO  Fei LUO  

     
    BRIEF PAPER-Electronic Circuits

      Vol:
    E95-C No:10
      Page(s):
    1692-1694

    An on-chip soft-start circuit based on a switched-capacitor for DC-DC switching regulator is presented. A ramp-voltage, which is generated by a switched-capacitor, is used to make pulse width slowly increase from zero, in order to eliminate the inrush current and the overshoot voltage during start-up. The post simulation results show that the regulator soft starts well with the proposed soft-start circuit.