The main work and achievements are as following : 1 ) proposed the approach to design the false high - passed broad band filter 主要工作和成果如下： 1 、赝高通宽带带状线滤波器的设计。
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Based on the introduction it explores into the designing of the broad band filter and the super miniature of local oscillator source 在此基础上提出了本文课题的重要意义，主要对收发信机中宽带滤波器进行设计和探讨、本振源超小型化。
