北斗卫星导航终端发射通道集成电路的设计余之喜(福建福大北斗通信科技有限公司,福建福州350100)摘要:随着我国北斗卫星导航系统日趋成熟,研制出小体积、低成本、低功耗的北斗卫星导航专用发射机迫在眉睫。因此,设计了一种北斗卫星导航终端发射通道集成电路。该电路首先在跨导输入级采用电阻负反馈技术,改进了吉尔伯特单元的双平衡电路结构,然后采用A类放大器、共源共栅负反馈结构来设计片内驱动放大器,最后采用AB类放大器结构设计、仿真和制作了小型化高效率的外置功率放大器。经测试,该电路输出特性优异。关键词:导航系统;混频器;压控振荡器中图分类号:TN927DOI:10.19768/j.cnki.dgjs.2022.24.035DesignofIntegratedCircuitforBeidouSatelliteNavigationTerminalLaunchChannelYUZhixi(FujianFudaBeidouCommunicationTechnologyCo.,Ltd.,Fuzhou350100,China)Abstract:WiththematurityofBeidousatellitenavigationsysteminChina,itisurgenttodevelopasmallsize,lowcostandlowpowerdedicatedBeidousatellitenavigationtransmitter.Therefore,anintegratedcircuitforBeidousatellitenavi-gationterminallaunchchannelwasdesigned.Firstly,theresistor-negativefeedbacktechniquewasappliedtothetrans-conductanceinputstageofthecircuit,andthedouble-balancedcircuitstructureoftheGilbertunitwasimproved.Then,theclassAamplifierandthecommon-sourcecommon-gridnegativefeedbackstructurewereusedtodesignthein-chipdriveamplifier.Finall...