Study and Design on Automatic Gain Control Circuit for WCDMA Repeater Uplink System
In order to communicate successfully for mobile stationsInsignal dead zone,this paper presents an inverse-gain-feedback dual-loop automatic gain control (AGC) circuit usedInWCDMA repeater uplink system. The repeater employs two stages radio frequency AGC circuits,which are gain control of input part and output part respectively,so that the system can work normally and automatically control the output power.Agilent advanced design system (ADS) is used asA simulation tool to analyze the performance. The results show that it is performed well,which has the characteristic of good frequency selectivity and channel selectivity,steady controllable output,large range of AGC gain and wide range of output power.Therefore,the proposed system is suitable to solve the problem of the dead zone in WCDMA communication.
Zhang Dan Liu Yuanan Jiang Haiying Li Shulan Tang Bihua
College of Telecommunication Engineering,Beijing University of Posts and Telecommunications,Beijing Motorola (China) Electronics Ltd.No.108 Jianguo Road,Beijing 100022 China College of Electronic Engineering,Beijing University of Posts and Telecommunications,Beijing 100876
国际会议
2008 International Conference on Microwave and Millimeter Wave Technology(2008国际微波毫米波技术会议)
南京
英文
1976-1979
2008-04-21（万方平台首次上网日期，不代表论文的发表时间）