高精度可变集成模拟延时线的设计方法研究

项目名称： 高精度可变集成模拟延时线的设计方法研究

项目编号： No.61471119

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 无线电电子学、电信技术

项目作者： 李文渊

作者单位： 东南大学

项目金额： 85万元

中文摘要： 超宽带（UWB）时控阵雷达及其相关处理中，非色散可变延时线是目前面临的挑战性课题。传统的模拟延时线和软件延时方法在带宽和实时性方面难以满足UWB雷达的要求。本项目基于实时延时线（TTD）技术，借助延时锁定思想，提出高精度可调节的模拟延时线实现方法，为这一技术难题的解决提供可行的途径。本项目针对宽带宽角的要求，围绕高速和高精度这两个关键问题，从最优化延时单元和延时参考环精确延时电路研究着手，对片上无源器件，延时可调节，电路结构优化等关键技术进行研究，建立延时单元模型库，提出精确延时电路可配置方案，突破高速和高精度与信号延时保真的技术瓶颈。通过电路设计、电磁场分析、流片和测试，验证延时电路设计方法的正确性。本项目将为进一步提高超宽带相控阵雷达监测扫描性能提供新的技术手段，为下一代超宽带阵列雷达信号延时精确控制奠定理论和技术基础。

中文关键词： 超宽带时控阵雷达；延时锁定环；实时延时线；集成电路设计

英文摘要： While the ultra-wideband (UWB) phased-array radar and its associated processing, variable non-dispersive delay line is currently facing challenging topics. The methods of traditional analog delay line and software delay in terms of bandwidth and real time are difficult to meet the UWB radar requirements. In this project, based on true-time delay (TTD) skill and resorting to the idea of delay locked, we presents a high-precision configurable analog delay line method, which is providing a viable approach for solving the technical problem. This project is face up to the requirements of wide frequency-band and wide incidence angles. Based on the two key problems including high speed and high precision, we mainly research optimization delay units, the accurate delay circuit employing delay reference loop and some key skills, such as on-chip passive devices designs, delay configurable skill, the optimization of circuit structures etc. We will build the modeling library of signal delay units, present the configurable schemes employing the accurate delay circuits and eliminate the bottlenecks of contradiction among high speed, high precision and signal delay fidelity. The correctness of the design method on signal delay circuits designed will be demonstrated by designing circuits, analyzing EM field, taping out and test. This project will provide the new means for radar detection scanning to improve the performances, and establish the theoretical and technical foundation of improving the signal delay's application in the complicated EM environments.

英文关键词： UWB time-array radar;delay-locked loop;true time line;Integrated circuit design