SSR零中频收发前端电路的设计与实现  

Design and implementation of SSR Zero-IF transceiver front-end circuit

作　　者：彭辉荣 李亚柯 陈镇山 王玉香 PENG Huirong;LI Yake;CHEN Zhenshan;WANG Yuxiang(School of Advanced Manufacturing,Fuzhou University,Quanzhou 362216,China;Quanzhou Institute of Equipment Manufacturing Haixi Institutes,Chinese Academy of Sciences,Quanzhou 362216,China)

机构地区：[1]福州大学先进制造学院,福建泉州362216 [2]中国科学院海西研究院泉州装备制造研究中心,福建泉州362216

出　　处：《微电子学与计算机》2024年第11期127-136,共10页Microelectronics & Computer

基　　金：泉州市科技计划(2023C005DW)。

摘　　要：二次雷达(Secondary Surveillance Radar,SSR)收发机是保证航空安全的重要通信设备。给出了一种采用零中频架构作为SSR射频收发机的硬件结构设计,取代了传统的超外差架构,使得硬件系统整体结构变得简洁、功耗更低、体积更小。对SSR硬件系统的收发结构提供理论上的可行性分析,并通过先进设计系统(Advanced Design System,ADS)仿真软件提前评估射频电路的预算增益和信道选择性。在此基础上完成了SSR射频收发前端的设计,对射频预处理模块的实际电路板测试。结果表明,在发射端输入0 dBm(1030 MHz)信号时,发射机输出功率大于20 dBm;在接收端输入−30 dBm(1090 MHz)的信号时,其信道选择输出端功率为大于−8 dBm。相比于传统单独AD9361系统,加上射频预处理模块后,整机系统的输出信噪比至少提升3 dB,噪声系数至少降低3 dB。The Secondary Surveillance Radar(SSR)transceiver is an important communication equipment to ensure the safety of aviation.This design adopts a zero intermediate frequency architecture as the hardware structure of the SSR RF transceiver,replacing the traditional superheterodyne architecture.It makes the overall hardware system structure simpler,lower power consumption and smaller size.The article provides a theoretical feasibility analysis of the transmit-receive structure of the SSR hardware system,and assesses the budget gain and channel selectivity of the RF circuit in advance through the Advanced Design System(ADS)simulation software.On this basis,the design of the SSR RF transceiver frontend is completed,and the actual circuit board test of RF preprocessing module is completed.The results show that when a 0 dBm(1030MHz)signal is input at the transmitter,the transmitter output power is greater than 20 dBm and when a−30 dBm(1090MHz)signal is input at the receiver,the channel selection output power is greater than−8 dBm.Compared with the traditional AD9361 system,with the RF preprocessing module,the output signal-to-noise ratio of the entire system is increased by at least 3 dB,and the noise coefficient is reduced by at least 3 dB.

关 键 词：二次雷达 SSR 零中频 ADS AD9361 

分 类 号：TN957[电子电信—信号与信息处理]