有线收发系统在GSM手机免提中的应用  

Application of Wired Transceiver System in GSM Car Telephones

作　　者：张玉[1] 王莹[1] 潘新月[2] 

机构地区：[1]国防科技大学电子科学与工程学院,湖南长沙410073 [2]南京大学,江苏南京210093

出　　处：《现代电子技术》2006年第19期43-45,共3页Modern Electronics Technique

摘　　要：当今随着汽车的日益普及,人们在驾驶中使用手机免提的需求也日益增强,但是绝大多数手机并不具备免提功能,因此开发一套车载手机免提系统非常有意义。介绍了车载手机免提通过有线方式的实现,分别给出了采用LM386和TDA2822M有线收发系统的硬件电路和调试方法,提出了抗干扰措施。采用TDA2822M的系统实现了手机的免提,通话语音清晰,具有广阔的应用前景。With the popularization of cars, there is a great demand for car telephones. But most mobile telephones don＇t have the function of off - hook,so it＇s very meaningful to develop a kind of car telephone. The implementation of the car telephone by the wired mode is introduced in this paper. The hardware circuits and the debug methods based on LM386 and TDA2822M are given,and the anti-jamming methods are also given. The system based on TDA2822M can get a clear voice and it has capacious foreground.

关 键 词：车载手机免提 LM386 TDA2822M 有线收发系统 抗干扰 

分 类 号：TN929.53[电子电信—通信与信息系统]