Hybrid inductor for improving gain attenuation characteristics of a Pi filter circuit
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 mag...
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Format: | Article |
Language: | English |
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Elsevier
2020-12-01
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Series: | Energy Reports |
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Online Access: | http://www.sciencedirect.com/science/article/pii/S2352484720316413 |
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author | Masato Tanaka Kazuhiro Shimura Mitsuhide Sato Tsutomu Mizuno Takashi Matsuoka |
author_facet | Masato Tanaka Kazuhiro Shimura Mitsuhide Sato Tsutomu Mizuno Takashi Matsuoka |
author_sort | Masato Tanaka |
collection | DOAJ |
description | 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. |
first_indexed | 2024-12-14T03:32:08Z |
format | Article |
id | doaj.art-5031261cc3e84d04ab6dd32f92d87e8b |
institution | Directory Open Access Journal |
issn | 2352-4847 |
language | English |
last_indexed | 2024-12-14T03:32:08Z |
publishDate | 2020-12-01 |
publisher | Elsevier |
record_format | Article |
series | Energy Reports |
spelling | doaj.art-5031261cc3e84d04ab6dd32f92d87e8b2022-12-21T23:18:44ZengElsevierEnergy Reports2352-48472020-12-016446451Hybrid inductor for improving gain attenuation characteristics of a Pi filter circuitMasato Tanaka0Kazuhiro Shimura1Mitsuhide Sato2Tsutomu Mizuno3Takashi Matsuoka4Faculty of Engineering Shinshu University, Nagano, 380-8553, JapanFaculty of Engineering Shinshu University, Nagano, 380-8553, JapanFaculty of Engineering Shinshu University, Nagano, 380-8553, Japan; Corresponding author.Faculty of Engineering Shinshu University, Nagano, 380-8553, JapanNippon Chemi-Con Corporation, Kanagawa 213-0012, JapanA 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.http://www.sciencedirect.com/science/article/pii/S2352484720316413Filter inductorHybrid inductorLow-pass filter circuitFrequency characteristicMagnetic composite material |
spellingShingle | Masato Tanaka Kazuhiro Shimura Mitsuhide Sato Tsutomu Mizuno Takashi Matsuoka Hybrid inductor for improving gain attenuation characteristics of a Pi filter circuit Energy Reports Filter inductor Hybrid inductor Low-pass filter circuit Frequency characteristic Magnetic composite material |
title | Hybrid inductor for improving gain attenuation characteristics of a Pi filter circuit |
title_full | Hybrid inductor for improving gain attenuation characteristics of a Pi filter circuit |
title_fullStr | Hybrid inductor for improving gain attenuation characteristics of a Pi filter circuit |
title_full_unstemmed | Hybrid inductor for improving gain attenuation characteristics of a Pi filter circuit |
title_short | Hybrid inductor for improving gain attenuation characteristics of a Pi filter circuit |
title_sort | hybrid inductor for improving gain attenuation characteristics of a pi filter circuit |
topic | Filter inductor Hybrid inductor Low-pass filter circuit Frequency characteristic Magnetic composite material |
url | http://www.sciencedirect.com/science/article/pii/S2352484720316413 |
work_keys_str_mv | AT masatotanaka hybridinductorforimprovinggainattenuationcharacteristicsofapifiltercircuit AT kazuhiroshimura hybridinductorforimprovinggainattenuationcharacteristicsofapifiltercircuit AT mitsuhidesato hybridinductorforimprovinggainattenuationcharacteristicsofapifiltercircuit AT tsutomumizuno hybridinductorforimprovinggainattenuationcharacteristicsofapifiltercircuit AT takashimatsuoka hybridinductorforimprovinggainattenuationcharacteristicsofapifiltercircuit |