文档介绍：i无线对讲机设计[摘要]本文阐述无线对讲机基带信号处理单元的设计。主要设计工作包括:发射端的麦克风语音信号放大电路,采样和量化,以及接收端的数字信号接收、数模转换、平滑滤波和功率放大,从而支持语音信号的基带传输。电路设计中主要使用运算放大器和单片机,分别处理模拟信号和数字信号。完成了硬件制作和软件编程。测试结果表明,麦克风语音信号放大电路、采样量化、数字信号接收、数模转换、平滑滤波和语音功率放大均达到了预期指标。[关键词]对讲机运算放大器STC12C5A60S2单片机iiDesignoftheOneWayRadio(BaseBandSignalProcessUnit):sendingandreceivingTheformerinvolvestheamplificationoftheinputvoicesiganlfromthemicrophone,sampling,,thenextproceduresareasfollows:thedigitalsignalreceiving,D/Aconversion,,thebasebandsignaltransmissionareimplemented,ponentsusedinthedesignofcircuitareoperationalamplifiersandmicrocontrollers,,.............................................................................................................................................................ii目录..........................................................................................................................................................iii引言....................................................................................................................................................................1第1章无线对讲机系统......................................................................................................................................................................................................................................................................................................................................