Electromagnetic Field Scanning System for EMI Measurement of Printed Circuit Board

• Main Authors: Ching-Hua Yen, 嚴景華
• Other Authors: Jia-You Lee
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/64023599736119058138

碩士 === 國立成功大學 === 電機工程學系碩博士班 === 94 === 　　This thesis presents the system of measuring electromagnetic interference on the printed circuit board, which is mainly composed of the scanning sub-system and the automated test equipment(ATE) sub-system. In scanning sub-system, the scanner is as measuring platform of the PCB. In addition the array probes are made up of the T type microstrip antenna as component for signals measuring, according to the array of 2 x 12 placed, each probe distributes in the square area of 15 mm x 15 mm; the array probes connect to spectrum analyzer by the broadband amplifier. The automated test equipment sub-system, fulfills the probes automatic switching and moving, controls filtering and scanning frequency of spectrum, and receives data from spectrum. Finally, it displays chart of space distributing on the electromagnetic interference of the printed circuit board. The experimental results verify the purpose of position measuring is achieved.