A new wideband common-mode noise filter consisting of Mn-Zn ferrite core and copper/polyimide tape wound coil

Yanagisawa, Kenji; Zhang, Fuchun; Sato, Toshiro; Yamasawa, K.; Mıura, Yoshimasa

doi:10.1109/tmag.2005.855189

Cited by 75 publications

(17 citation statements)

References 5 publications

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“…Differential line performance due to asymmetric structures [31] . 이러한 공통모드 잡음을 제거하는 일반적인 방법으로 는 높은 투자율을 갖는 페라이트 코어(ferrite core)를 이용 한 쵸크(choke)를 이용하는 것이다 [32] . 이와 같은 공통모 드 쵸크는 페라이트의 재료적 특성 때문에, 낮은 주파수 에서 그 효과를 얻을 수 있으며, GHz 이상의 고주파 대역 에서는 사용할 수 없다.…”

Section: 이 연구에서는 물리적으로 매우 큰 구조를 갖는 상용unclassified

Recent Trends in System-Level EMC Investigation and Countermeasure Technology for RF Interference Due to High-Speed Digital System Noise

구태완¹,

이호성²,

Yook³

2014

The Journal of Korean Institute of Electromagnetic Engineering

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This paper presents recent trends in system-level EMC investigation and countermeasure technology for radio frequency interference (RFI) influenced by noise generated in high-speed digital system. Recently, as the only digital device can perform various roles, there are a variety of EMI/EMC problems between systems. Especially, RFI is now recognized as a major problem, which occurs by EMI caused by the digital system. Therefore, in this paper, recent trends of RFI investigation from component-level to system-level are introduced and analyzed. Furthermore, in order to solve the RFI problem, recent researches are presented and investigated for the occurrences and suppression methods of common-mode noise which is one of the major noise sources in high-speed digital system. Lastly, this paper suggested future research of system-level EMC analysis and countermeasure technology for RFI problems.

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Section: 이 연구에서는 물리적으로 매우 큰 구조를 갖는 상용unclassified

Recent Trends in System-Level EMC Investigation and Countermeasure Technology for RF Interference Due to High-Speed Digital System Noise

구태완¹,

이호성²,

Yook³

2014

The Journal of Korean Institute of Electromagnetic Engineering

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“…It should be noted that the two solutions come from the ± choice in (9) and that, if γ is a solution of (9), −γ will also be another solution.…”

Section: Bloch-floquet Analysismentioning

confidence: 99%

“…A different approach to achieve good performance is to combine artificial transmission lines providing good common-mode suppression (while keeping the integrity of the differential path) with differential devices (such as bandpass filters) whose common-mode response might not be satisfactory. In the MHz domain, common-mode chokes have traditionally been used to suppress common-mode propagation [9,10], although such strategy does not work in the GHz domain. In this domain, it was proposed in [11] the use of a LTCC compact narrow band common-mode rejection filter based on coupled lumped inductors.…”

Section: Introductionmentioning

confidence: 99%

Dual-Band Differential Filter Using Broadband Common-Mode Rejection Artificial Transmission Line

Mesa

Qian

Hong³

et al. 2013

PIER

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Abstract-A new balanced dual-band bandpass filter with strong common-mode rejection is presented in this paper. Common-mode rejection is provided by a section of a periodic microstrip differential line that behaves as a low-pass filter under common-mode operation. In contrast, the differential line exhibits very good all-pass behavior under differential mode operation. This structure is combined with a differential dual-band bandpass filter based on embedded resonators. Simulations and experiments confirm that the combined structure has good common-mode rejection within the passbands of the dual-band differential filter.

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“…The commonmode choke using a high permeability ferrite core is one of the most general approaches [4,5], but this approach is valid only at MHz frequency range and the size reduction is difficult for the high density digital circuits [1]. For this reason, a broadband and miniaturized common-mode filter was proposed by Wu et al [3] on the low-temperature co-fired ceramic (LTCC) with the common-mode noise suppression over −10 dB in the frequency range of 3.8-7.1 GHz.…”

Section: Introductionmentioning

confidence: 99%

Common-Mode Suppression Design for Gigahertz Differential Signals Based on C-Slotline

Zhuang¹,

Shi²,

Tang³

et al. 2016

PIER C

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Abstract-For wideband common-mode noise suppression in high-speed differential signals, a low-cost compact filter is proposed and designed by etching two coupled C-slotlines on the ground plane. It is found that the bandwidth of the common-mode stopband over −10 dB is from 2.4 GHz to 6.35 GHz with no degradation of the differential-mode insertion loss and group delay within the wide common-mode stopband. In time domain, the differential signal eye diagram is not deteriorated as well. In addition, an equivalent circuit model is developed and provides a quickly prediction of the common-mode stopband. The results show a good consistency between the simulations and measurements.

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A new wideband common-mode noise filter consisting of Mn-Zn ferrite core and copper/polyimide tape wound coil

Cited by 75 publications

References 5 publications

Recent Trends in System-Level EMC Investigation and Countermeasure Technology for RF Interference Due to High-Speed Digital System Noise

Recent Trends in System-Level EMC Investigation and Countermeasure Technology for RF Interference Due to High-Speed Digital System Noise

Dual-Band Differential Filter Using Broadband Common-Mode Rejection Artificial Transmission Line

Common-Mode Suppression Design for Gigahertz Differential Signals Based on C-Slotline

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