体声波
Surface Acoustic Wave filter and ceramic filter are primarily used in the traditional wireless communication systems; they can not meet the needs of current communication system because of large volume or low operating frequency.
传统用于无线通信的带通滤波器以介质陶瓷滤波器和声表面波滤波器为主,他们因为体积大或工作频率低等因素已经不能满足需要。
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