The utility model belongs to the technical field of AGC receiver channel control technology, discloses a fast control system AGC circuit based on linear receiver, including digital signal processor, which are connected in series to the RF antenna, is controlled by a digital signal processor first attenuation network, RF amplifier, a frequency circuit, controlled by a digital signal processor second attenuation network two, intermediate frequency circuit, controlled by a digital signal processor VGA amplifier, and is arranged in the RF amplifier RF field strength detection circuit, the output end of the circuit is set in an intermediate frequency electric field detection circuit, an intermediate frequency output terminal of the circuit is arranged on the output end of the second two intermediate frequency circuit frequency field detection circuit and set the VGA output of the amplifier output the field detection circuit; the RF field detection circuit, an intermediate frequency electric field detection circuit, the second frequency field The output end of the strong detection circuit and the total output field strength detection circuit are respectively connected with the corresponding input end of the digital signal processor.
【技术实现步骤摘要】
【技术保护点】
一种基于线性接收机的AGC电路快速控制系统，其特征在于，包括数字信号处理器，依次串联的射频天线、受控于数字信号处理器的第一衰减网络、射频放大电路、一中频电路、受控于数字信号处理器的第二衰减网络、二中频电路、受控于数字信号处理器的VGA放大器，以及设置在射频放大电路输出端的射频场强检测电路、设置在一中频电路输出端的一中频场强检测电路、设置在二中频电路输出端的二中频场强检测电路和设置VGA放大器输出端的总输出场强检测电路；所述射频场强检测电路、一中频场强检测电路、二中频场强检测电路、总输出场强检测电路的输出端分别连接数字信号处理器的相应输入端。
【技术特征摘要】
【专利技术属性】
技术研发人员：蔡朝锋，刘少平，刘杰，张勇军，毛鸿书，周波，朱英柏，
申请(专利权)人：陕西烽火电子股份有限公司，
类型：实用新型
国别省市：
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