Ultrasonic wire bonding was applied to connect the contacts and sub - miniature - a ( sma ) connectors . also a suitable shield box has been designed for the test of hts filters 对于超导滤波器的焊接，采用超声点焊焊接sma的接头和高温超导滤波器的接触电极，实现了较小的接触电阻和较好的机械强度。
2.
The finite difference time domain ( fdtd ) method is used to simulate the electromagnetic in the middle of a shielding box and the induced current in circuits inside it when it with and without a wire penetrated 应用时域有限差分（ fdtd ）法对有、无贯通导线及不同长度的贯通导线穿过屏蔽箱体时，箱体中点处的电场及箱体内印刷电路上的耦合电流进行了数值仿真。
