基于PID干扰抑制算法的中频接收机设计  

Design of Intermediate Frequency Receiver Based on PID Anti-Interference Algorithm

作　　者：丁杨[1,2] 

机构地区：[1]西南交通大学计算机与通讯工程系,四川成都610031 [2]四川建筑职业技术学院信息工程系,四川德阳618000

出　　处：《科技通报》2014年第8期137-139,共3页Bulletin of Science and Technology

摘　　要：为设计抗干扰能力强的中频接收机,提高中频接收机的抗干扰调制解调性能,提出一种基于可变论域模糊PID控制的中频接收机干扰抑制算法。改进算法采用在载波频率变换成中频频率时引入可变论域理论,在混频管中进行可变论域非线性分区,对PID抗干扰抑制算法进行改进,用LT5575实现解调功能,采用LT6600-20芯片实现基带信号的滤波和中频放大功能,实现中频接收机的硬件设计。测试结果表明,采用该抗干扰抑制算法设计中频接收机,对中频干扰和镜像干扰具有很好的抑制效果,接收机性能较好。For the design of digital intermediate frequency receiver with strong anti-interference ability, and improving the demodulation and anti-interference performance of intermediate frequency receiver, an interference suppression algorithm of receiver based on variable domain fuzzy PID control algorithm is proposed. For the improved algorithm, the variable do-main theory is adopt in the in the intermediate frequency converting the intimidate frequency conversion, and the variable domain nonlinear partition is taken in the mixing tube. The PID anti-interference algorithm is improved. The LT5575 and LT6600-20 chips are used to realize the hardware design. Test results show that the designed intermediate frequency re-ceiver with new interference suppression algorithm, it has good inhibition effect on intermediate frequency interference and mirror image interference, the receiver performance is better.

关 键 词：PID控制 中频接收机 抗干扰 可变论域 

分 类 号：TN713.5[电子电信—电路与系统]