High-Attenuation Wideband Active Common-Mode EMI Filter Section

• Published in: IEEE transactions on power electronics Vol. 37; no. 5; pp. 5479 - 5490
• Main Authors: Zhang, Kun, Wang, Ke-Wei, Chung, Henry Shu-Hung
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.05.2022; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Active filter; Active filters; Amplification; amplifier; Amplifiers; Attenuation; Broadband; Capacitors; common-mode (CM) noise; Electrical surges; Electromagnetic interference; electromagnetic interference (EMI) filter; Emitter followers; Emitters; Filtration; High gain; Impedance; Inductors; multistage; Passive filters; Transistors; Voltage; wideband

A high-attenuation wideband active common-mode filter (ACF) section is presented. Each section is composed of an active capacitor and a small common-mode (CM) inductor. The active capacitor is realized by using several coupling capacitors and a class-A bipolar-junction-transistor based amplifier for...