Quad-channel broadband compact multi-antenna GNSS down-converter for high-reliability navigation

作     者：Riyan Wang Bin Li Hongyin He Kunming Yang Wei Feng Zhijian Chen 

作者机构：School of MicroelectronicsSouth China University of TechnologyGuangzhou 510640GuangdongChina Guangzhou Runxin Information Technology Co.LtdGuangzhou 510663GuangdongChina 

出 版 物：《Transportation Safety and Environment》 (交通安全与环境（英文）)

年 卷 期：2023年第5卷第4期

页      面：100-106页

核心收录：

学科分类：0810[工学-信息与通信工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 081601[工学-大地测量学与测量工程] 0816[工学-测绘科学与技术] 

基　　金：supported by the Key-area Research and Development Program Guangdong Province of China(Grants No.2019B010141002 and 2020B0404030005) 

主　　题：down-converter radio frequency(RF)front-end multi-antenna receiver quad-channel global navigation satellite system(GNSS) broadband 

摘      要：A high-reliability broadband high-linearity down-converter for multi-antenna global navigation satellite system(GNSS)receiver is presented in this *** on direction-of-arrival estimation,the multi-antenna GNSS receiver can separate the GNSS signals from the interfering signals and suppress harmful broadband radio frequency *** drive the off-chip 50Ω2 resistive load and meet the stringent requirements of linearity,a quad-channel down-converter with a broadband common-gate low-noise transcon-ductance amplifier,current-driven passive mixer and novel bridge mode transimpedance driving amplifier have been proposed to contruct the multi-antenna *** operating frequency of this down-converter is from 1.15 to 1.65 GHz,covering all bands for global positioning system(GPS),Beidou navigation satellite system(BDS),global navigation satellite system(GLONASS)and *** measured results show that the proposed quad-channel down-converter achieves+38 dBm output 3rd order intercept point(OIP3)and+17 dBm OP1dB(output-referred 1 dB compression point),9.5 dB to 12.9 dB noise figure(NF)across the variable gain of 10 dB to 27 dB and approximately 47 dB channel isolation.