CNI系统L波段接收机射频前端综合化设计方案探讨  

Discussion on integrated design scheme of RF front-end for CNI L-band receiver

作　　者：张宇晖 Zhang Yuhui(Southwest China Institute of Electronic Technology,Chengdu 610036,China)

机构地区：[1]中国西南电子技术研究所,四川成都610036

出　　处：《电子技术应用》2022年第10期1-4,8,共5页Application of Electronic Technique

摘　　要：针对通信导航识别系统(Communiction,Navigation and Identification,CNI)中L波段多功能射频综合化的需求,对L波段接收机射频前端电路进行综合化设计。通过分析CNI中航管、塔康、精密测距等L波段功能对接收机的性能需求,结合接收机主要工作原理和技术指标选取二次变频超外差接收机结构作为实现方案,并对接收机射频前端下变频电路和中频电路进行设计,通过复用前级下变频电路,在中频放大电路中分功能处理实现射频前端综合化设计。计算了两种放大模式下各级器件的增益、噪声系数等指标,结论表明各项指标满足功能设计需求,该射频前端综合化设计方案可以满足CNI系统L波段接收机射频综合化需求。In this paper,according to the needs of L-band multi-function RF integration of CNI,the integrated design of the L-band receiver RF front-end circuit is carried out.By analyzing the performance requirements of L-band functions such as ATC,TACAN and DMEP on the receiver,combined with the main working principle and technical indicators of the receiver,the structure of the dual-conversion superheterodyne receiver is selected as the implementation scheme.The RF front-end down-conversion circuit and IF circuit of the receiver are designed,and the integrated design of the RF front-end is realized by multiplexing the down-conversion circuit and dividing the functions in the IF circuit.The gain,noise figure and other indicators of the devices at all levels under the two amplification modes are calculated.The conclusion shows that the indicators meet the design requirements of the functions,and the RF front-end integrated design scheme in this paper can meet the RF integration requirements of the CNI system L-band receiver.

关 键 词：通信导航识别系统 L波段接收机 射频前端 综合化设计 

分 类 号：TN492[电子电信—微电子学与固体电子学]