应用于WiFi6的双频段天线-低噪放一体化设计  

Integrated Design of Dual-band Antenna and Low-noise Amplifier for WiFi6 Applications

作　　者：伊浩然 陈益 YI Hao-ran;CHEN Yi(Faculty of Electrical Engineering and Computer Science,Ningbo University,Ningbo 315211,China)

机构地区：[1]宁波大学信息科学与工程学院,宁波315211

出　　处：《无线通信技术》2022年第4期55-60,共6页Wireless Communication Technology

基　　金：国家自然科学基金(61971250);宁波市自然科学基金(202003N4109)

摘　　要：随着WiFi技术的发展,新一代WiFi6应用日渐广泛。为了提高WiFi6双频段接收机性能并减小尺寸,本文基于ATF-551M4晶体管提出了一种可应用于WiFi6的双频天线与低噪声放大器(Low-noise amplifier,LNA)一体化设计方法。在两个工作频段内同时将天线的输出阻抗调节为LNA电路最小噪声匹配所需的输入阻抗,使得天线可以与电路直接相连,不需要任何的匹配网络,从而消除传统设计中匹配网络带来的损耗并使得电路结构更加紧凑。仿真和实测结果表明一体化设计的尺寸较传统级联设计减少了约13%,并且一体化设计的噪声系数(Noise Figure,NF)在工作频带内明显低于传统级联设计,最大减小了0.44dB(改善了约19%)。With the development of WiFi technology,the new generation of WiFi6 is widely used.In order to improve the performance and reduce the size of WiFi6 dual-band receiver,this paper proposes an integrated design method of dual-band antenna and low-noise amplifier(LNA)that can be applied to WiFi6 based on ATF-551 M4 transistor.In the two working fre-quency bands,the output impedance of the antenna is adjusted to the input impedance required for the minimum noise matching of the LNA circuit at the same time,so that the antenna can be directly connected to the circuit without any matching network,thereby eliminating the loss caused by the matching network in the traditional design and making the circuit structure more compact.The simulated and measured results show that the overall size of the integrated design is reduced by approximately 13%compared with the traditional cascade design,and the noise figure(NF)of the integrated design is significantly lower than that of the traditional cascade design in the working frequency band with a maximum reduction of 0.44 dB(improved by approximately 19%).

关 键 词：WiFi6 双频天线 低噪声放大器 一体化 

分 类 号：TN722.3[电子电信—电路与系统]