基于射频收发器的高中频DBF系统设计  

Design of high-IF DBF system based on RF transceiver

作　　者：吴彬彬 全英汇 肖国尧 李亚超[2] 邢孟道[2] WU Binbin;QUAN Yinghui;XIAO Guoyao;LI Yachao;XING Mengdao(School of Electronic Engineering, Xidian University, Xi’an 710071, China;National Key Lab of Radar Signal Processing, Xidian University, Xi’an 710071, China)

机构地区：[1]西安电子科技大学电子工程学院,陕西西安710071 [2]西安电子科技大学雷达信号处理国家重点实验室,陕西西安710071

出　　处：《系统工程与电子技术》2022年第2期365-375,共11页Systems Engineering and Electronics

基　　金：国家自然科学基金(61772397,61303035)资助课题。

摘　　要：由于数字波束形成(digital beam forming,DBF)系统需要多个天线单元来形成波束,将极大增加系统的体积与功耗,无法很好地应用在无人机、导弹和微纳卫星平台中。针对上述问题,提出一种基于射频收发器AD9371的新型高中频(high intermediate frequency,high-IF)架构DBF系统硬件电路设计方法,该设计在满足收发全数字、高精度、灵活、小型化和Ku波段需求的同时,有效地减少了硬件系统干扰杂散,提高了DBF系统性能。暗室环境测试验证了该系统在单波束和多波束的条件下具有优越的性能。Digital beam forming(DBF)system requires multiple antenna units to form the beam,which will greatly increase the system’s size and power consumption and cannot be well applied in unmanned aerial vehicle,missile and micro-nano satellite platform.To solve the above problems,a kind of design method of a new high intermediate frequency(high-IF)architecture DBF system hardware circuit based on the radio frequency(RF)transceiver AD9371 is proposed.This design meets the requirements of full digital transmission and reception,high precision,flexibility,miniaturization and K-under(Ku)band,while effectively reducing the hardware system spurious interference and improving the performance of the DBF system.The superior performance of the system has been verified under single beam and multi-beam conditions in the darkroom environment test.

关 键 词：数字波束形成 高中频架构 小型化 射频收发器 

分 类 号：TN958.92[电子电信—信号与信息处理]