By electric field coupling, three second-order bandpass filters with elliptic function response and high miniaturization performance were design and fabricated.
采用电场耦合方式分别设计并加工了三个小型化性能非常突出的具有椭圆函数响应的二阶带通滤波器。
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The MX-118B consists of a heavy duty custom 18 "low frequency driver in a sturdy and portable bandpass enclosure optimally tuned for extended low frequency response."