【摘要】 由于移动通信技术的发展,通信频率的变化范围越来越宽,为了解决太阳能直放站锁相环系统在满足输出频率和相位稳定的同时,兼顾直放站太阳能电源对整个系统实现低功耗供电的问题,文中研究了锁相环原理,分析了GSM太阳能直放站锁相环系统,采用高度集成的锁相环频率合成器和高转换效率的电源,并进行了其具体的电路设计与应用,同时进行了锁相环系统测试,满足直放站频率合成输出的性能要求。更多还原

【Abstract】 With the development of communication technology,the change range of communication frequency has become wider and wider. To realize the steadiness of output frequency and phase with low energy consumption in the phase-locked loop system for GSM solar repeater,this paper tells of the phase-locked loop principle,analyzes the phase-locked loop system of GSM solar repeater,and describes the specific design and application of the circuit. Test on the phase-locked loop system,indicate that this system could meet the performance requirements of repeater output frequency synthesizer.更多还原