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1. 发明申请

US20060057959A1 Radio having a MEMS preselect filter 失效
标题翻译：具有MEMS预选滤波器的无线电
公开(公告)号：US20060057959A1
公开(公告)日：2006-03-16
申请号：US10938482
申请日：2004-09-10
申请人： David Vacanti , Ijaz Jafri , Keith Bayern
发明人： David Vacanti , Ijaz Jafri , Keith Bayern
IPC分类号： H03H7/00
CPC分类号： H03H9/462
摘要： The present invention provides systems and methods for pre-filter in a VHF receiver using Micro-Electro-Mechanical Systems (MEMS) filters. The system includes an antenna, and first and second Micro-Electro-Mechanical Systems (MEMS) filters. The first MEMS filter filters a signal received by the antenna based on a first pre-defined bandwidth, and the second MEMS filter filters the signal filtered by the first MEMS filter based on a second bandwidth. The system also includes an analog to digital converter that converts the signal filtered by the second MEMS filter into a digital signal, a down converter that down converts the digital signal produced by the A to D converter, and a digital signal processor that processes the down converted digital signal produced by the down converter. The first and second MEMS filters or the down converter are adjustable based on a received tuning signal.
摘要翻译：本发明提供了使用微机电系统（MEMS）滤波器在VHF接收机中进行预滤波的系统和方法。该系统包括天线以及第一和第二微机电系统（MEMS）滤波器。第一MEMS滤波器基于第一预定义带宽对由天线接收的信号进行滤波，并且第二MEMS滤波器基于第二带宽对由第一MEMS滤波器滤波的信号进行滤波。该系统还包括将由第二MEMS滤波器滤波的信号转换为数字信号的模数转换器，将由A转D转换器产生的数字信号下变频的下变频器以及处理下降的数字信号处理器由转换器产生的转换数字信号。第一和第二MEMS滤波器或降压转换器可基于接收到的调谐信号来调节。

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