Evaluation of Common-Mode Radiation from Printed Circuit Boards by Modelling Imperfect Ground Effect(Regular section)

スポンサーリンク

概要

• 論文の詳細を見る

• Fundamental EMI source that generates common-mode radiation from printed circuit boards (PCBs) is investigated here. It is done by modelling the ground lines of PCBs as imperfect ground. The radiation emission in the far zones from PCBs is obtained by regarding interconnects on PCBs as transmission lines and the far field emission is evaluated based on the current distribution of the lines. The finite size ground trace is defined as an imperfect ground, that can be viewed as an inductive reactance which, in turn, causes the ground return path to radiate as a wire antenna. For the accurate analysis of imperfect ground effect, we divide the equivalent circuit into N sections. In addition, based on transverse electromagnetic (TEM) assumption, we estimate the electromagnetic interference (EMI) of three typical PCB geometries, namely, coplanar strips, parallel-plate strips and microstrips. The quantitative value of induced current distribution along the ground return path depends on the physical size, geometry and length of ground traces. Measured data are presented to confirm the result of numerical analysis. A knowledge of EMI source mechanisms and their relationship to layout geometries is necessary to determine the essential features that must be taken into account to estimate emissions and provide direction for reducing EMI due to interconnects on PCBs.

• 社団法人電子情報通信学会の論文
• 2002-12-01

著者

• CHEN I-Fong

  Department of Electronic Engineering, Jinwen University of Science and Technology

• Chen I-fong

  Department Of Electronic Engineering Jin-wen Institute Of Technology:department Of Research Auden Te

• HSUE Ching-Wen

  Department of Electronic Engineering, National Taiwan University of Science and Technology

• Chen I-fong

  Department Of Electronic Engineering National Taiwan University Of Science And Technology:department

• Hsue Ching-wen

  Department Of Electronic Engineering National Taiwan University Of Science And Technology

• Chen I-fong

  Department Of Electrical Engineering Jinwen University Of Science And Technology

関連論文

• Printed Modified Bow-Tie Dipole Antenna for Multi-Band Applications
• Modeling the Imperfect Ground of Printed Circuit Boards Based on TEM Assumption
• Modified Tab Monopole for Thple-Band Cellular Phone Antenna
• A Dual Band Planar Inverted-F Antenna with Non-uniform Meander-Line Shaped Slot(Antenna and Propagation)
• Modified Printed Folded λ/2 Dipole Antenna for DVB Applications(Antennas and Propagation)
• Low Cost Printed Omni-Directional Spiral-Mode Monopole Antenna for Wireless Applications(Antenna and Propagation)
• Evaluation of Common-Mode Radiation from Printed Circuit Boards by Modelling Imperfect Ground Effect(Regular section)
• Compact Wide-Band Antenna for Dual ISM-Band Applications(Antenna and Propagation)
• Inverse Scattering of Nonuniform Transmission Lines by Using Arbitrary Waveform
• Planar Compact Inverted-F Antenna for Wireless Wide Area Network Operation in the Laptop Computer

スポンサーリンク