超短波电台节电单元的设计与实现  

Design and Realization of Power Saving Unit for a VHF Radio

作　　者：李云[1] 冯永浩[1] 吴晓丽[1] 王宝良[1] 

机构地区：[1]空军工程大学电讯工程学院,西安710077

出　　处：《电讯技术》2011年第9期1-5,共5页Telecommunication Engineering

摘　　要：为实现便携式超短波电台节电目的,从降低静态和动态功率消耗两方面,提出了某型电台节电改造方案。通过简化改进频合电路,减少静态功耗;采用功率自适应控制,利用嵌入式技术和数字电位器,使电台随接收信号强弱自动调整发射功率大小,并较好解决了电波传输损耗与通信距离、数字电位器控制关系的非线性问题,降低了动态功耗。实测表明,在保持原电台通信性能不变的情况下,静态功耗可降低40%,动态功耗可降低16%～58%。该方法的设计思想和实现途径可供其它类似电台节电改造或设计时参考。In order to realize power saving of portable VHF radio, a power saving alteration plan is proposed for a radio based on reducing static and dynamic power consumption. The static power consumption is reduced through improving frequency synthesizer circuit. The dynamic power consumption is reduced through adaptive control of transmitted power, which is realized by using embedded technology and digital resistance to make radio automatically adjust the transmitted power according to the received signal level, meanwhile the nonlinear problem between transmission loss, communication distance and digital resistance is solved. Practical measurement shows that the static power consumption is reduced 40% and the dynamic power consumption 16% - 58% under condition that the radio＇s performance remains unchanged. The design philosophy and technique can be referenced by similar power saving improvement and design.

关 键 词：超短波电台 节电 数字电位器 自适应功率控制 功耗 

分 类 号：TN924[电子电信—通信与信息系统] TN86[电子电信—信息与通信工程]