Title：A fast AGC system and control method of receiver
Country：China
Patent No.：201510193923.8
Legal Status：Authorized
Inventor：Jingjing Dong, Hanjun Jiang, Zhaoyang Weng, Jingyi Zheng, Chun Zhang, Zhihua Wang
Assignee：Tsinghua University
Address：Mailbox No. 82, Beijing 100084
Filing Date：2015-04-22
Issue Date：2017-10-17
Abstract：
The invention discloses a receiver fast automatic gain control system and control method. The system comprises a radio frequency automatic gain control circuit and an intermediate frequency automatic gain control circuit; the radio frequency automatic gain control circuit comprises a radio frequency detector connected with a receiver, the output end of the radio frequency detector is connected with the input end of a radio frequency controller, and the output end of the radio frequency controller is connected with the receiver; the intermediate frequency automatic gain control circuit comprises an interference detector and a useful signal detector which are connected with the receiver, the output end of the interference detector and the output end of the useful signal detector are connected with the output end of an intermediate frequency controller respectively, the output end of the intermediate frequency controller is connected with the receiver, and the input end of the intermediate frequency controller is further connected with the output end of the radio frequency controller. The invention further discloses a control method of the system; the receiver fast automatic gain control system and control method can enable zero intermediate frequency receivers and sliding intermediate frequency receivers to finish gain control rapidly in a short lead code time.
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