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Design and analysis of common-mode noise suppression structures in differential microstrip lines

Design and analysis of common-mode noise suppression structures in differential microstrip lines

자료유형
학위논문
개인저자
오상열 吳尙烈
서명 / 저자사항
Design and analysis of common-mode noise suppression structures in differential microstrip lines / Sang-yeol Oh
발행사항
Seoul :   Graduate School, Korea Unversity,   2019  
형태사항
xiii, 76장 : 삽화(일부천연색), 도표 ; 26 cm
기타형태 저록
Design and Analysis of Common-Mode Noise Suppression Structures in Differential Microstrip Lines   (DCOLL211009)000000083182  
학위논문주기
학위논문(박사)-- 고려대학교 대학원: 컴퓨터·전파통신공학과, 2019. 2
학과코드
0510   6YD36   351  
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지도교수: 이재훈  
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참고문헌: 73-76
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PDF 파일로도 이용가능;   Requires PDF file reader(application/pdf)  
비통제주제어
common-mode noise , suppression,,
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040 ▼a 211009 ▼c 211009 ▼d 211009
085 0 ▼a 0510 ▼2 KDCP
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100 1 ▼a 오상열 ▼g 吳尙烈
245 1 0 ▼a Design and analysis of common-mode noise suppression structures in differential microstrip lines / ▼d Sang-yeol Oh
260 ▼a Seoul : ▼b Graduate School, Korea Unversity, ▼c 2019
300 ▼a xiii, 76장 : ▼b 삽화(일부천연색), 도표 ; ▼c 26 cm
500 ▼a 지도교수: 이재훈
502 1 ▼a 학위논문(박사)-- ▼b 고려대학교 대학원: ▼c 컴퓨터·전파통신공학과, ▼d 2019. 2
504 ▼a 참고문헌: 73-76
530 ▼a PDF 파일로도 이용가능; ▼c Requires PDF file reader(application/pdf)
653 ▼a common-mode noise ▼a suppression
776 0 ▼t Design and Analysis of Common-Mode Noise Suppression Structures in Differential Microstrip Lines ▼w (DCOLL211009)000000083182
900 1 0 ▼a Oh, Sang-yeol, ▼e
900 1 0 ▼a 이재훈 ▼g 李在勳, ▼e 지도교수
945 ▼a KLPA

전자정보

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Design and analysis of common-mode noise suppression structures in differential microstrip lines (80회 열람)
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No. 1 소장처 과학도서관/학위논문서고/ 청구기호 0510 6YD36 351 등록번호 123060833 도서상태 대출가능 반납예정일 예약 서비스 B M
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No. 1 소장처 세종학술정보원/5층 학위논문실/ 청구기호 0510 6YD36 351 등록번호 153081460 도서상태 대출가능 반납예정일 예약 서비스

컨텐츠정보

초록

      Because differential signaling has a high immunity to noise, it is widely used in high-speed digital printed circuit boards (PCBs). However, asymmetric geometries lead to common-mode noise in high-speed interconnections based on differential signaling. These asymmetric geometries include rising/falling time mismatches in the I/O driver circuit, trace length mismatches, and imbalanced routing such as bending. Common-mode noise not only degrades signal quality in differential signaling but also generates unwanted radiation noise on a PCB where the cables, integrated circuit (IC) devices, and connectors are combined. The emitted radiation noise arising from the common-mode noise generated by the differential pairs can lead to electromagnetic interference (EMI) and radio-frequency interference (RFI), both of which adversely affect signal integrity in high-speed interconnections. Thus, common-mode noise should be suppressed by employing a rejection filter or a compensation structure for line-length mismatches.
      In this dissertation, two wideband common-mode noise rejection filters and a compensation structure for bent differential lines are proposed. First, a wideband common-mode noise rejection filter based on coupled microstrip lines (CMLs) and edge-coupled coplanar waveguides (ECCPWs) was designed. The proposed filter provides wideband common-mode noise signal suppression based on an even mode impedance mismatching technique between the CMLs and ECCPWs and wideband differential-mode signal propagation for high-speed digital PCBs. Secondly, a wideband common-mode noise filter with defected ground structures (DGSs) and capacitive-coupled stepped-impedance open stubs (CCSIOSs) was designed. Based on an analysis of the Bloch-Floquet theorem, it was implemented using the DGSs and CCSIOSs to deliver wideband common-mode noise rejection and a compact size. Finally, to reduce differential-to-common mode conversion noise, an electromagnetic bandgap (EBG) unit cell structure was adopted in the inner line of the bent differential lines. Because this compensates for the length mismatch between the inner and outer lines, differential-to-common mode conversion noise was suppressed using a simple design characterized by a compact size.

목차

1. Introduction    1
 1.1 Motivation for Research    1
 1.2 Causes of Common-Mode Noise    2
  1.2.1 Asymmetric routing    2
  1.2.2 Rising/Falling Time Mismatches    3
  1.2.3 Crosstalk    3
 1.3 Influence of Common-Mode Noise in High-Speed Electrical Interconnections    4
  1.3.1 Electromagnetic Interference    4
  1.3.2 Ground Bounce Noise    4
 1.4 Types of Common-Mode Filter    5
  1.4.1 Common-Mode Chokes    5
  1.4.2 Dumbbell-Shaped Defected Ground Structures    6
  1.4.3 Electromagnetic Bandgap (EBG) Structures    7
 1.5 Differential-to-Common Mode Conversion Noise Suppression Structures in Bent Differential Lines    9
 1.6 Conditions for Common-Mode Noise Suppression Structures in High-Speed Electrical Interconnections Based on Differential Signaling    11
 1.7 Organization of the Dissertation    12
2. Wideband Common-Mode Noise Suppression Filter Based on Coupled Microstrip Lines and Edge-Coupled Coplanar Waveguides    13
 2.1 Introduction    13
 2.2 Design of Common-Mode Suppression Filter    15
 2.3 Fabricated and Measured Results    24
 2.4 Conclusion    28
3. Design and Analysis of Common-Mode Noise Suppression Filter Based on Defected Ground Structures and Capacitive-Coupled Stepped-Impedance Open Stubs    29
 3.1 Introduction    29
 3.2 Design and Analysis of the Proposed Common-Mode Noise Suppression Filter    31
  3.2.1 Analysis of the Unit Cell of the Proposed Filter    31
  3.2.2 Dispersion Analysis for the Periodic Unit Cell Structure    47
 3.3 Fabrication and Measured Results    52
 3.4 Conclusion    59
4. Mitigation of Differential-to-Common Mode Conversion Noise in Bent Differential Lines    60
 4.1 Introduction    60
 4.2 Bent Differential Lines with EBG Unit Cell Structure    61
 4.3 Fabrication and Measured Results    67
 4.4 Conclusion    70
5. Conclusions    71
REFERENCES    73