A Method for Increasing the Bandwidth of Rogowski Coils Without Changing Their Size

He, Yigang; Huang, Hui; Xu, Qing; Huang, Tao

doi:10.1109/tim.2022.3157378

Cited by 8 publications

(1 citation statement)

References 28 publications

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“…Highly flexible and reliable current sensors are critical to accurately monitoring variations in current for various applications [9]. As summarized in [11] and [12], various current sensors with different design approaches and operating mechanisms have recently been developed, including the resistive shunt current [10], Hall [11], inductive [12], and Rogowski coil sensors [13]. In particular, extensive research has gone into the development of magnetoresistance (MR)-based sensors [14,15]; these can be used to detect very small variations in current, making them suitable for sensing biological phenomena [18] and motor control [16].…”

Section: Introductionmentioning

confidence: 99%

A Compact Reconfigurable Resonator-Based Direct Current Sensing System

Zou

Yaqoob

Hussein

et al. 2023

J. Microelectromech. Syst.

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A compact and reconfigurable current readout system is presented that is based on microelectromechanical system (MEMS) resonators. The proposed system generates analog and digital outputs by electrothermally tuning the microbeam resonant frequency according to variations in the input current signal. A single resonator is utilized to generate the analog output, while a resonator array operating at different frequencies is utilized to generate a digital one-hot output. Experiments showed that the frequency shift is linearly proportional to the square of the current. The single resonator has a detection limit of 1.16 µA, and the resonator array offers good static linearity with a maximum differential/integral non-linearity of 0.55/0.23 least significant bits. The single resonator is suitable for applications requiring high-resolution measurements. The proposed resonator sensing system has a small footprint, is compatible with large-scale integration, and provides considerable flexibility for reconfiguration.

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