L波段高效率射频功率放大器的设计与仿真  

Design and Simulation an L-Band High Efficiency Power Amplifier

作　　者：杨小川[1] 

机构地区：[1]重庆邮电大学光电工程学院,重庆400065

出　　处：《数字技术与应用》2014年第11期176-181,共6页Digital Technology & Application

基　　金：国家自然科学基金资助项目(61102026);重庆市教委科学技术研究项目(KJ120505);重庆市自然科学基金项目(cstcjj A40022)

摘　　要：射频功率放大器是无线通信系统中的重要组成部分,其工作效率直接影响着整个系统的耗能、稳定度和对电源散热装置的要求,提高射频功率放大器的效率,能够节约能源,降低功耗,因此实现射频功率放大器的高效率工作是目前射频功率放大器领域的热点问题之一。本文选用Freescale晶体管MW6S004N,借助ADS2013软件,采用负载牵引技术和源牵引技术得到最佳负载阻抗和最佳源阻抗,并用Smith圆图进行电路的匹配设计,对射频功率放大器进行了仿真和优化。仿真结果表明,在频率为1960MHz的L波段,输入功率为21d Bm时,射频功率放大器的输出功率大于36d Bm,功率附加效率大于50%。这种高效率射频功率放大器适用于WCDMA基站,对基站中高效率功率放大器的设计有着重要的参考价值。RF power amplifier is an important component of wireless communication system,Its efficiency directly affects energy consumption, stability of the whole system and the requirements for power cooling unit.Improve the efficiency of RF power amplifiers can save energy, reduce power consumpfon, so high efficiency RF power amplifier is the mainstream. In this paper, we select the transistors MW6S004N of Freescale, through ADS2013 software, using load- pull technology and source-pull technique to get optimum load impedance and optimum source impedance, and use the Smith chart to match the circuit design, Finally, simulation and optimization the RF power amplifier. Simulation results show that at the frequency of 1960MHz in the L-band, the input power is 21dBm, the RF amplifier output power greater than 36dBm, the power added efficiency greater than 50% .get a high efficiency RF power amplifier that used for the base station of WCDMA. Therefore, this method has important reference value to design high efficiency power amplifier that used for base station.

关 键 词：射频功率放大器 L波段 高效率 ADS2013 

分 类 号：TN432[电子电信—微电子学与固体电子学]