【作者】 周香； 周忠元； 沈军涛；

【Author】 Zhou Xiang;Zhou Zhongyuan;Shen Juntao;School of Mechanical Engineer Southeast University;

【机构】 东南大学机械工程学院；

【摘要】 双焦点平面腔是一种新型的屏蔽效能测试装置。为确定1GHz-18GHz双焦点平面腔的大小,本文数值和解析方法分析了椭圆谐振腔的谐振特性。证明了的椭圆腔的高度是决定TMmr1和TEmr1谐振频率的主要因素,也是影响输入输出端口传输系数的主要因素。因此,椭椭圆谐振腔的上限频率确定为TMmr1截止频率的80%。论文在椭椭圆谐振腔谐振特性分析的基础制造了双焦点平面腔,并研究了时域门技术在双焦点平面腔法屏蔽效能测试中的应用。更多还原

【Abstract】 In order to determine the size of Dual Focus Flat Cavity(DFFC) in the frequency range 1 GHz-18 GHz, the resonance characteristics of the elliptical resonator is researched through analytical and numerical methods. It is proved that the height of the cavity which mainly determines the resonant frequencies of TMmr1 and TEmr1 modes is the main factor that affects the transmission coefficient from port 1 to port 2. So, the upper limit of frequency is defined as 80% of the cutoff frequency of TM mr1 mode. Furthermore the newly designed DFFC is manufactured. Finally the Shielding effectiveness test technology involving time domain gate is researched.更多还原