Threshold Variation based Analysis and Implementation of an Optimized AGC Circuitry for Digital IF Receiver

摘要：

In digital receiver designs, An Automatic Gain Control (AGC) block is used to scale the power of input signal so as to meet high dynamic range requirement. This paper proposed a new method called Threshold Variation (TV) analysis that best suits framed based Pulsed Doppler (PD) radar Step AGC design. The minimal dB control step, system threshold and the stability of Envelop Detector Filter (EDF) could be attained from TV analysis. By utilizing a Cascaded Integrator Comb (CfC) Filter and the α|Max|+β|Min| magnitude approximation, an optimized AGC circuitry is implemented in FPGA. Our practice has proved that the circuitry has appealing performance in a digital Receiver.

关键词： automatic gain control envelop detection TV analysis CIC filler magnitude approximation

作者: Jianpeng Fan Benyuan Liu Zaiqi Lu

作者单位: ATR Key Lab National University of Defense Technology Changsha, China

会议类型: 国际会议

会议名称: The 2010 International Conference on Computer Application and System Modeling(2010计算机应用与系统建模国际会议 ICCASM 2010)

会议地点: 太原

会议语种:英文

页码: 64-68

在线出版日期: 2010-10-22（万方平台首次上网日期，不代表论文的发表时间）