Topic
Precision rectifier
About: Precision rectifier is a research topic. Over the lifetime, 4952 publications have been published within this topic receiving 63668 citations. The topic is also known as: super diode.
Papers published on a yearly basis
Papers
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TL;DR: In this article, a new variation of current mode control for high power factor operation of boost rectifier is presented, where the switching principle of the modulator is predictive, as the actual current equals the reference current at the end of each switching period.
Abstract: In this paper, a new variation of current mode control for high power factor operation of boost rectifier is presented. The general features are no input voltage sensing, no use of multiplier, and no inner loop current regulator. It therefore follows the same control structure as that of the linear peak current mode control and the nonlinear carrier control. However, it implements a different switching law for the modulator that extends the range of continuous conduction mode of operation. The switching principle of the modulator is predictive, as the actual current equals the reference current at the end of each switching period. The no. of reset integrators required in this modulator for generation of the carrier waveform is two. The steady-state stability analysis of the boost rectifier with the proposed predictive switching modulator (PSM) is presented in this paper. A low-frequency small-signal model of the boost rectifier switched by the PSM is developed for evaluation of the control transfer function. Experimental results on a 400-W boost rectifier prototype are presented.
41 citations
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14 Apr 2010TL;DR: A high-efficiency highly sensitive CMOS rectifier for radio-frequency identification (RFID) tags is presented and its performance is confirmed through post-layout simulations.
Abstract: In this paper, a high-efficiency highly sensitive CMOS rectifier for radio-frequency identification (RFID) tags is presented. Although the minimum RF input signal amplitude for which the rectifier operates properly is lower than the standard threshold voltage of the MOS transistors, the design uses only standard-threshold-voltage (standard-V th ) devices. Furthermore, two rectifier biasing schemes are proposed. The first biasing scheme is intended for semi-passive RFID tags and allows the tag rectifier to adjust the input power level at which the rectifier's maximum power efficiency is achieved, i.e., the rectifier circuit can be tuned to achieve its maximum power efficiency at any given input power. The second biasing scheme is for self-sufficient rectifiers used in passive tags and does not require any auxiliary power source. The rectifier is designed and laid out in a standard 0.13-µm CMOS process and its performance is confirmed through post-layout simulations.
40 citations
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17 Jun 2001TL;DR: In this article, the practical realization of a novel concept for output voltage control and mains voltage proportional guidance of the input currents of a three-phase/switch/level PWM (VIENNA) rectifier system being connected to a heavily unbalanced mains is presented.
Abstract: The practical realization of a novel concept for output voltage control and mains voltage proportional guidance of the input currents of a three-phase/switch/level PWM (VIENNA) rectifier system being connected to a heavily unbalanced mains is presented. The control is investigated experimentally for a wide input voltage range 6.5 kW prototype of the VIENNA rectifier.
40 citations
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TL;DR: This paper presents a self-powered rectifier for piezoelectric energy harvesting applications, and the key idea of the proposed system is to reset the transducer capacitor at optimal instants to maximize the extracted power.
Abstract: This paper presents a self-powered rectifier for piezoelectric energy harvesting applications, and the key idea of the proposed system is to reset the transducer capacitor at optimal instants to maximize the extracted power. The proposed rectifier consists of two switches and two active diodes. The switches discharge the transducer capacitor at optimal instants two times for every cycle. The active diodes are based on op-amps with a preset dc offset, which reduces the voltage drop and the leakage current and avoids instability. In addition, the controller for the proposed rectifier is simple to reduce the circuit complexity and the power dissipation. The proposed rectifier was designed and fabricated in 0.18- $\mu{\rm m}$ CMOS technology. Measured results indicate that it achieves power efficiency of 91.2%, and the amount of power extracted by the proposed rectifier is 3.5 times larger when compared with the conventional rectifiers. The proposed rectifier does not require any off chip components to enable a full chip integration, and the die area of the proposed circuit is 0.08 $\,\times\,$ 0.20 ${\rm mm}^{2}$ .
40 citations
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TL;DR: This paper presents a fast-settling compact feedforward automatic-gain-control (AGC) circuit suitable for use in wireless local-area network receivers with orthogonal frequency-division multiplexing (OFDM) due to their high peak-to-average power ratio.
Abstract: This paper presents a fast-settling compact feedforward automatic-gain-control (AGC) circuit suitable for use in wireless local-area network receivers with orthogonal frequency-division multiplexing (OFDM). The use of these signals introduces stringent settling-time constraints which limit the use of traditional closed-loop feedback amplifiers. Furthermore, the amplitude detection of OFDM signals cannot be performed by a typical peak detector (PD) due to their high peak-to-average power ratio; as a consequence, a novel fast-settling PD is employed to solve this task. The AGC has been implemented in a low-cost 0.35-μm CMOS technology. Supplied at 1.8 V, it operates with a power consumption of 2.4 mW at frequencies as high as 100 MHz, while its gain ranges from 0 to 22 dB in 2-dB steps through a 5-b word. The settling time of the circuit is below 2.4 μs (three symbols).
40 citations