| Summary: | 碩士 === 景文科技大學 === 電子工程系電腦與通訊碩士班 === 102 === This paper proposes the four EMI solutions including termination resistor, decoupling capacitor, layout and common mode filter are implemented on HDMI device. For termination resistor, this method is applied to longer transmission line, and it can improve impedance matching and suppress signal reflection. For decoupling capacitor, reducing ground bounce is achieved easily, but that is also easy to cause system malfunction. Therefore, the use of this method needs to be considered carefully. For layout, a good PCB layout design can minimize EMI problems. To adopt the proper layout guidelines during circuit design will short the time required for mass production and meet time to market. For common mode filter, it can suppress noise effectively, but this solution cost is the highest of all. After analyzing the four methods for near filed and far filed test, all test results will be shown on this paper and for industry reference.
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