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Hybrid inductor for improving gain attenuation characteristics of a Pi filter circuit

Tanaka, Masato ; Shimura, Kazuhiro ; Sato, Mitsuhide ; Mizuno, Tsutomu ; Matsuoka, Takashi

Energy reports, 2020-12, Vol.6, p.446-451 [Periódico revisado por pares]

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Título:
Hybrid inductor for improving gain attenuation characteristics of a Pi filter circuit
Autor: Tanaka, Masato ; Shimura, Kazuhiro ; Sato, Mitsuhide ; Mizuno, Tsutomu ; Matsuoka, Takashi
Assuntos: Filter inductor ; Frequency characteristic ; Hybrid inductor ; Low-pass filter circuit ; Magnetic composite material
É parte de: Energy reports, 2020-12, Vol.6, p.446-451
Descrição: A filter circuit is required to suppress noise and have high gain attenuation characteristics in a wide band. Gain attenuation decreases because the relative permeability of an inductor core employed in a filter circuit drops sharply as drive frequency increases. Thus, by combining a core with a magnetic composite material with excellent frequency characteristics, we suppressed inductance reduction over a wide frequency range. As a result, the inductance of a hybrid inductor increased by 17.8% and 116% at 1 and 80 MHz, respectively, compared with that of a conventional inductor. When we applied a hybrid inductor to a Pi filter circuit, it was attenuated by 6.5 and 5.0 dB at 100 and 80 MHz, respectively, compared with a conventional inductor.
Editor: Elsevier Ltd
Idioma: Inglês

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