Common-Mode Filters with Interdigital Fingers for Harmonics Suppression and Lossy Materials for Broadband Suppression

Qian Liu; Guanghua Li; Victor Khilkevich; David Pommerenke

doi:10.1109/TEMC.2015.2443126

Common-Mode Filters with Interdigital Fingers for Harmonics Suppression and Lossy Materials for Broadband Suppression

Qian Liu, Guanghua Li, Victor Khilkevich, David Pommerenke

Research output: Contribution to journal › Article › peer-review

Abstract

Common-mode (CM) noise on differential microstrip lines can be suppressed by PCB-embedded filters. These filters use resonating or broadband structures such that only the field from the CM signal couples to them. Based on a quarter-wavelength resonator, a new PCB filter is designed having an electrical size of only 0.15 λ × 0.065 λ, where λ is the effective wavelength in the CM filter. Its interdigital structure is also capable of suppressing higher order harmonics of the CM signal and can be used for USB 3.0 to mitigate electromagnetic interference. Further, a novel broadband suppression structure is described that uses magnetically lossy material to suppress the CM signal from 4.6 to 20 GHz without strongly affecting the intended differential signal.

Original language	English
Article number	7287787
Pages (from-to)	1740-1743
Number of pages	4
Journal	IEEE Transactions on Electromagnetic Compatibility
Volume	57
Issue number	6
DOIs	https://doi.org/10.1109/TEMC.2015.2443126
Publication status	Published - 1 Dec 2015
Externally published	Yes

Keywords

Broadband filter
common-mode filter
differential signal
narrowband filter
quarter-wavelength

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1109/TEMC.2015.2443126

Cite this

@article{a5fcb5139b8b4dd6bae29c658f50445f,

title = "Common-Mode Filters with Interdigital Fingers for Harmonics Suppression and Lossy Materials for Broadband Suppression",

abstract = "Common-mode (CM) noise on differential microstrip lines can be suppressed by PCB-embedded filters. These filters use resonating or broadband structures such that only the field from the CM signal couples to them. Based on a quarter-wavelength resonator, a new PCB filter is designed having an electrical size of only 0.15 λ × 0.065 λ, where λ is the effective wavelength in the CM filter. Its interdigital structure is also capable of suppressing higher order harmonics of the CM signal and can be used for USB 3.0 to mitigate electromagnetic interference. Further, a novel broadband suppression structure is described that uses magnetically lossy material to suppress the CM signal from 4.6 to 20 GHz without strongly affecting the intended differential signal.",

keywords = "Broadband filter, common-mode filter, differential signal, narrowband filter, quarter-wavelength",

author = "Qian Liu and Guanghua Li and Victor Khilkevich and David Pommerenke",

year = "2015",

month = dec,

day = "1",

doi = "10.1109/TEMC.2015.2443126",

language = "English",

volume = "57",

pages = "1740--1743",

journal = "IEEE Transactions on Electromagnetic Compatibility",

issn = "0018-9375",

publisher = "Institute of Electrical and Electronics Engineers",

number = "6",

}

TY - JOUR

T1 - Common-Mode Filters with Interdigital Fingers for Harmonics Suppression and Lossy Materials for Broadband Suppression

AU - Liu, Qian

AU - Li, Guanghua

AU - Khilkevich, Victor

AU - Pommerenke, David

PY - 2015/12/1

Y1 - 2015/12/1

N2 - Common-mode (CM) noise on differential microstrip lines can be suppressed by PCB-embedded filters. These filters use resonating or broadband structures such that only the field from the CM signal couples to them. Based on a quarter-wavelength resonator, a new PCB filter is designed having an electrical size of only 0.15 λ × 0.065 λ, where λ is the effective wavelength in the CM filter. Its interdigital structure is also capable of suppressing higher order harmonics of the CM signal and can be used for USB 3.0 to mitigate electromagnetic interference. Further, a novel broadband suppression structure is described that uses magnetically lossy material to suppress the CM signal from 4.6 to 20 GHz without strongly affecting the intended differential signal.

AB - Common-mode (CM) noise on differential microstrip lines can be suppressed by PCB-embedded filters. These filters use resonating or broadband structures such that only the field from the CM signal couples to them. Based on a quarter-wavelength resonator, a new PCB filter is designed having an electrical size of only 0.15 λ × 0.065 λ, where λ is the effective wavelength in the CM filter. Its interdigital structure is also capable of suppressing higher order harmonics of the CM signal and can be used for USB 3.0 to mitigate electromagnetic interference. Further, a novel broadband suppression structure is described that uses magnetically lossy material to suppress the CM signal from 4.6 to 20 GHz without strongly affecting the intended differential signal.

KW - Broadband filter

KW - common-mode filter

KW - differential signal

KW - narrowband filter

KW - quarter-wavelength

UR - http://www.scopus.com/inward/record.url?scp=84943196927&partnerID=8YFLogxK

U2 - 10.1109/TEMC.2015.2443126

DO - 10.1109/TEMC.2015.2443126

M3 - Article

AN - SCOPUS:84943196927

SN - 0018-9375

VL - 57

SP - 1740

EP - 1743

JO - IEEE Transactions on Electromagnetic Compatibility

JF - IEEE Transactions on Electromagnetic Compatibility

IS - 6

M1 - 7287787

ER -

Common-Mode Filters with Interdigital Fingers for Harmonics Suppression and Lossy Materials for Broadband Suppression

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this