| 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。 |
| 关键词: 超短波电台 节电 数字电位器 自适应功率控制 功耗 |
| DOI： |
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| 基金项目: |
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| Design and realization of power saving unit for a VHF radio |
| LI Yun,FENG Yong-hao,WU Xiao-li,WANG Bao-liang |
| (Telecommunication Engineering Institute,Air Force Engineering University, X
i′an 710077,China) |
| Abstract: |
| In order to realize power saving of portable VHF radio, a power saving alteratio
n plan is proposed for a radio based on reducing static and dynamic power consum
ption. The static power consumptio
n is reduced through improving frequency synthesizer circuit. The dynamic power
consumption is reduced through adaptive control of transmitted power, which i
s realized by using embedded technology and digital resistance to make radio aut
omatically adjust the t
ransmitted power according to the received signal level, meanwhile
the nonlinear problem between transmission loss,communication distance and digit
al resistance is solved. Practical measurement shows that the static power
consumption is reduced 40% and the dynamic power consumption 16%～58% under cond
ition that the radio′s performance remains unchanged. The design philosophy and
technique can be referenced by similar power saving improvement and design. |
| Key words: VHF radio power saving digital resistance adaptive power control power consump
tion |
《电讯技术》编辑部 