【摘要】 应用CXA1019S芯片完成接收机混频、中放、解调等的设计,并用芯片BU2614 以 PLL频率合成的方法产生稳定的本探和控制输入调谐回路的谐振频率,从而实现电调谐。单片机采用MCS-51系列对频率合成器BU2614进行控制,加上键盘、显示和存储器电路,可实现多种程控搜索、电台存储等功能。更多还原

【Abstract】 This passage describes the application of CXA1019S chip in receivers of mixing, mid-wave amplifying and demodulation and the methods of using BU2614 to produce stable self-vibration and the frequency of controlling input tuning loops, and thus to realize electric tuning. We use MCS-51 Serise of SCM to control the frequency synthesizer BU2614, and with keyboard, displaying and memory medium we can realize some functions like various scheduled searching and station storage.更多还原