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.

Single phase regeneration with a polyphase rectification power circuit

Abstract: A polyphase rectifier power circuit with single phase regenerative capability provides motoring power from a polyphase supply and returns single phase regenerative power to the supply. One embodiment uses pulse width modulation of the regenerative rectifier to limit line-to-line current flow through the regenerative rectifier during regeneration while another embodiment uses 180° conduction in the regenerative rectifier with the substitution of two thyristors for two diodes in the rectifier.

Broadband rectifier design based on quality factor of input matching circuit

Abstract: This paper proposes and demonstrates a broadband rectifier circuit designed by maximizing the quality factor of its input matching circuit. This paper clarifies the relationship between the quality factor of the input matching circuit and rectifier performance. By adopting a transmission line of suitable length, the rectifier achieves both high power conversion efficiency and broadband operation. The rectifier circuit employs a double-voltage type diode configuration. The input matching circuit of the rectifier consists of a high impedance transmission line, two open stubs in parallel and a capacitor. The fabricated rectifier circuit demonstrates a RF-DC conversion efficiency of 81 % at 10 dBm input power and 1.62 GHz. The operating bandwidth is 300 MHz. its performance matches of the best rectifiers reported to date which validates the proposed design.

High-efficiency CMOS rectifier for fully integrated mW wireless power transfer

Abstract: Design and measurement results are presented for a 0.18 µm CMOS full-wave rectifier architecture with 85.8% measured power efficiency at 40.68 MHz. The rectifier targets fully integrated power harvesting biomedical implant and lab-on-chip applications that use on-chip or mm-sized near-field inductively coupled wireless power transfer receivers. The rectifier uses feedback from the output to lower the voltage drop and increase the power efficiency. The rectifier achieves the highest measured efficiency in its class.

Implementation of a three-level rectifier for power factor correction

Abstract: In this paper, a new single-phase switching mode rectifier (SMR) for three-level pulse width modulation (PWM) is proposed to achieve high input power factor, low current harmonics, low total harmonic distortion (THD) and simple control scheme. The mains circuit of the proposed SMR consists of six power switches, one boost inductor, and two DC capacitors. The control algorithm is based on a look-up table. There are five control signals in the input of the look-up table. These control signals are used to control the power flow of the adopted rectifier, compensate the capacitor voltages for the balance problem, draw a sinusoidal line current with nearly unity power factor, and generate a three-level PWM pattern on the AC side of adopted rectifier. The advantages of using three-level PWM scheme compared with two-level PWM scheme are using low voltage stress of power switches, decreasing input current harmonics, and reducing the conduction losses. The performances of the proposed multilevel SMR are measured and shown in this paper. The high power factor and low harmonic currents at the input of the rectifier are verified by software simulations and experimental results from a laboratory prototype.

RFID system and RFID chip equipped with sensor function

Abstract: An integrated circuit chip includes a rectifier circuit configured to convert an alternating voltage supplied from an antenna into a direct-current voltage, a nonvolatile memory coupled to the rectifier circuit to operate by use of the direct-current voltage, a sensor circuit coupled to the rectifier circuit to operate by use of the direct-current voltage to collect measurement data, and a logic circuit configured to control the nonvolatile memory and the sensor circuit such that an access operation of the nonvolatile memory and a data collecting operation of the sensor circuit are not performed concurrently.