Effect of rotational stirrer location on field uniformity inside a reverberation chamber

• Main Author: 鄒騰億
• Other Authors: 林漢年
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/03537968859017757964

碩士 === 大葉大學 === 電信工程學系碩士班 === 92 === In recent years, people are more and more relied on the electrical and electronic devices in daily life. Besides the functional performance is concerned, people also care about if its electromagnetic compatibility characteristic is certified by authority. Several international committee and national authorities have published a variety of the electromagnetic interference and electromagnetic susceptibility standards for the various categories of electrical and electronic equipment and devices used in military, industry, and consumer levels respectively, and require the electrical and electronic products pass the related test to be eligible on the market. As the trend keeps wide-spreading around the world, the request for the EMC test facility is therefore growing day by day. A reverberation chamber is an electrically large, highly conductive enclosed cavity with paddles built-in. It is used to conduct electromagnetic measurements for both emissions and immunity tests on electric and electronic equipment. It should be operated with required field uniformity. This article investigates what kind of the influence of changing the location of rotational stirrers in reverberation chambers on the field uniformity in working volume it is, and uses simulating software and practical measurement to investigate the situation of the field uniformity in working volume of chambers.