【作者】 王凯；

【导师】 程知群；

【作者基本信息】 杭州电子科技大学 ， 电子科学与技术， 2017， 硕士

【摘要】 本文首先重点介绍了宽带高效率连续F类射频功放的技术,并设计了工作于1.1-1.7GHz北斗卫星导航系统频段的射频功率放大器。同时,为了满足消费者对高速率、大容量传输的需求,采用低温共烧陶瓷(LTCC)工艺,设计了一款工作于60GHz基于基片集成波导(SIW)的背腔阵列天线。SIW不仅保持了传统金属波导的高品质因数、低插损、低辐射等特性,还具有低剖面、低成本、易于与平面电路集成等优点。本文在阅读了大量文献资料基础上,整理了近几年来国内外宽带高效率连续F类的研究成果。同时归纳总结了国内外基片集成波导背腔天线的研究情况,并对毫米波天线的发展趋势有一定了解。其次介绍了射频放大器的功率晶体管、性能指标和开关类功率放大器的基础知识。通过查阅相关的文献资料,整理了目前设计宽带高效率连续F类射频功放的方法,并对输出非线性电容对连续F类功放的效率影响进行了简单的分析。接着使用ADS软件设计了工作于1.1-1.7GHz北斗卫星导航系统频段的宽带高效率射频功率放大器。采用Cree半导体公司的GaN HEMT晶体管CGH40010F,栅极电压为-2.7 V,漏极电压为28V。实测结果满足在工作频带内漏极效率平均65%以上设计目标。最后简单介绍了天线的参数指标、微带馈电、基片集成波导(SIW)和低温共烧陶瓷(LTCC)工艺。然后使用HFSS软件设计了一款带宽在5GHz的基片集成波导的背腔阵列天线。仿真结果2x2形式阵列在56.57GHz~62.13GHz范围内,回波损耗S11<-15dB,增益达到10.9dBi;4x4形式阵列在57.8GHz~62.8GHz范围内,回波损耗S11<-15dB,增益达到15.1dBi;并对2x2形式阵列进行了加工测试。更多还原

【Abstract】 This thesis focuses on highly-efficient broadband continuous class F RF power amplifier technology and designs work in the band of 1.1-1.7GHz about Compass satellite navigation system.At the same time,in order to meet consumer demand for high-speed and high-capacity transmission,the 60 GHz cavity-backed array antenna based on substrate integrated waveguide(SIW)in low-temperature co-fired ceramic(LTCC)process is fabricated.SIW function as the conventional metal waveguide,thus it not only maintains the characteristic of traditional metal waveguide,such as high quality factor,low insertion loss,low radiation and so on,but also has the properties of low profile,low cost and easy integration with planar circuits,etc.First,based on reading a large number of literatures,the highly-efficienct broadband continuous class F research achievement in recent years is understanded.The research situation of substrate integrated waveguide cavity-backed antenna is summarized and the development trend of millimeter wave antenna is also discussed.Secondly,the power transistor,performance of the amplifier and switch-mode RF power amplifier are introduced.By reviewing the relevant literatures,the current method of designing high efficiency continuous class F RF power amplifier is presented.The effect of the output nonlinear capacitor on the efficiency of the continuous class F power amplifier is simply analyzed.Then,the ADS software is used to design the highly-efficient broadband RF power amplifier about Compass satellite navigation system in the band of 1.1-1.7GHz by using Cree company GaN HEMT products CGH40010 F.The power amplifier works under Vds=28V,Vgs=-2.7V.The measured results meet the design goal of more than 65% average drain efficiency in the bandwidth.At the end of this thesis,the parameters of antenna,microstrip feed,SIW and LTCC are introduced.Then,the HFSS software is used to design the SIW cavity-backed array antenna with the bandwidth of 5GHz.The simulation results show that the return loss in 2x2 array antenna is S11<-15 dB and the gain is 10.9dBi in the range of 56.57 GHz ~ 62.13 GHz.The return loss in 4x4 array antenna is S11 <-15 dB and the gain is 15.1dBi in the range of 57.8GHz ~ 62.8GHz.Finally,the 2x2 array antenna is processed.更多还原