ADS-B射频基带一体化接收芯片的基带设计  

Baseband Design of ADS-B RF Baseband Integrated Receiver Chip

作　　者：朱子玉 李建成 ZHU Zi-yu;LI Jian-cheng(School of Physics and Optoelectronic Engineering,Xiangtan University)

机构地区：[1]湘潭大学物理与光电工程学院

出　　处：《中国集成电路》2024年第3期26-31,共6页China lntegrated Circuit

摘　　要：广播式自动相关监视(ADS-B)接收机为适应不同平台,需要兼顾小型化、低功耗,低成本与高灵敏度。针对已有ADS-B接收机无法同时满足上述需求,本文创新性地提出一种ADS-B射频基带一体化芯片的基带设计。基带利用数字下变频与低通滤波解进行信号解调。采用匹配滤波算法检测帧头,基线多样点技术[1]提取数据位和置信度。纠错模块基于置信度纠正校验错误的报文。仿真验证与后端设计表明,基带满足最小信噪比71dB,接收报文信号时功耗为9.65mW,接收芯片灵敏度可达-92dBm。In order to adapt to different platforms,Automatic Dependent Surveillance-Broadcast(ADS-B)receivers need to take into account miniaturization,low power consumption,low cost and high sensitivity.In view of the existing ADS-B receivers that cannot meet the above requirements at the same time,this paper innovatively proposes a baseband design of an ADS-B radio frequency baseband integrated chip.The baseband uses digital down converter and low pass filter for signal demodulation.The frame header is detected by the matched filtering algorithm,and the data bits and confidence levels are extracted by the baseline multi-point technology.The error correction module corrects the message with check error based on the confidence.The simulation verification and backend design show that the baseband meets the minimum signal-to-noise ratio of 71dB,the power consumption when receiving the message signal is 9.65mW,and the sensitivity of the receiving chip can reach-94dBm.

关 键 词：广播式自动相关监视 基带 匹配滤波 基线多样点技术 

分 类 号：TN851[电子电信—信息与通信工程] TN402