几种典型的小型化印刷天线的设计与研制
发布时间：2018-09-06 09:54
【摘要】：超宽带(ultra-wideband,UWB)技术在无线电通信、微波导航、雷达探测等领域的应用十分广泛。天线作为系统的终端器件,可以接收和辐射无线电波,是系统中重要的组成部分。现有的无线通信系统如无线局域网、全球微波接入网技术、C波段卫星通信系统及X波段海事卫星通信系统与超宽带系统间存在电磁干扰,而通过设计具有滤波特性的超宽带多阻带天线可以解决这一问题;多通带天线可以同时工作在多个频带,减小了系统的天线数量和体积。这两类天线都具有结构简单、尺寸小、易集成等优点,是很多天线研究者关注的热点。首先利用加载谐振结构技术设计了三款超宽带多阻带天线。超宽带天线采用共面波导馈电方式,选用半圆形辐射贴片,并采用地板倒角技术来优化阻抗匹配,使得天线的带宽可以覆盖超宽带系统的频段。利用在介质板背面加载两个不同的谐振环实现天线的双阻带特性。在双阻带天线的基础上,进一步分析天线的电流分布图,优化天线辐射贴片的结构,并利用加载辐射贴片技术在保证天线小型化的基础上增加天线的滤波频段。从仿真结果和天线的加工实物测试结果分析得出,设计的超宽带多阻带天线可以减小UWB系统和WLAN、WIMAX、X-band等窄带系统间的电磁干扰。利用微带馈电、枝节辐射的方式,设计了一款新型的小型化三通带天线。调节枝节的尺寸和位置,可以优化天线的通带频段。天线的尺寸仅为24×19.9×1.524mm3,天线矩形的地板尺寸仅为2?7.4?0.018 mm3。通过减小地板尺寸,减小了地板的耦合效应,减小了地板对天线辐射性能的影响。天线的结构简单、尺寸小并且易于加工。仿真和实测结果显示天线的S11参数在-10 dB以下覆盖M-WIMAX、WLAN、C-band三大通信频段系统的2.4 2.484 GHz、3.3 3.6 GHz、5.15 5.35 GHz频段。通过将超宽带天线与平面微带滤波器集成设计,实现UWB天线在WLAN、WIMAX、X-band三个系统频段具有阻带滤波效果。利用Agilent ZVB20矢量网络分析仪对天线加工样品进行测试,在微波暗室中测试天线的方向图及增益等参数,得到天线的仿真结果和实验基本吻合。
[Abstract]:Ultra-wideband (ultra-wideband,UWB) technology is widely used in the fields of radio communication, microwave navigation, radar detection and so on. As the terminal device of the system, antenna can receive and radiate radio waves, which is an important part of the system. The existing wireless communication systems such as wireless local area network, global microwave access network technology, C-band satellite communication system, X-band maritime satellite communication system and ultra-wideband system have electromagnetic interference. The problem can be solved by designing an ultra-wideband multi-stopband antenna which can work in multiple frequency bands at the same time and reduce the number and volume of antenna in the system. These two kinds of antennas have the advantages of simple structure, small size, easy integration and so on. First, three UWB multi-stop band antennas are designed by using the loaded resonant structure technology. UWB antenna is fed by coplanar waveguide, semi-circular radiation patch is selected, and floor chamfering technique is used to optimize impedance matching, so that the bandwidth of the antenna can cover the frequency band of UWB system. The double stopband characteristics of the antenna are realized by loading two different resonant rings on the back of the dielectric plate. Based on the double stopband antenna, the current distribution diagram of the antenna is further analyzed, the structure of the antenna radiation patch is optimized, and the filter frequency band of the antenna is increased on the basis of the miniaturization of the antenna by using the loading radiation patch technique. From the analysis of the simulation results and the processing test results, it is concluded that the designed UWB multi-stopband antenna can reduce the electromagnetic interference between the UWB system and the narrow band system such as WLAN,WIMAX,X-band. Using microstrip feed and branch radiation, a new miniaturized three-way antenna is designed. By adjusting the size and position of the branches, the band of the antenna can be optimized. The size of the antenna is only 24 脳 19.9 脳 1.524mm3, and the floor size of the rectangular antenna is only 2 脳 19.9 脳 1.524mm3.The size of the antenna is only 0.018 mm3.. By reducing the size of the floor, the coupling effect of the floor is reduced, and the effect of the floor on the radiation performance of the antenna is reduced. The antenna is simple in structure, small in size and easy to process. The simulated and measured results show that the S11 parameters of the antenna are below -10 dB and cover the 2.4 ~ 2.484 GHz,3.3 / 3.6 GHz,5.15 / 5.35 GHz band of M-WIMAX / WLANC-band communication band. By integrating the UWB antenna with the planar microstrip filter, the UWB antenna has the effect of stopband filtering in the three frequency bands of the WLAN,WIMAX,X-band system. The antenna processing samples were tested by Agilent ZVB20 vector network analyzer. The antenna pattern and gain parameters were measured in the microwave darkroom. The simulation results of the antenna were in good agreement with the experiment.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN822
本文编号：2225979
[Abstract]:Ultra-wideband (ultra-wideband,UWB) technology is widely used in the fields of radio communication, microwave navigation, radar detection and so on. As the terminal device of the system, antenna can receive and radiate radio waves, which is an important part of the system. The existing wireless communication systems such as wireless local area network, global microwave access network technology, C-band satellite communication system, X-band maritime satellite communication system and ultra-wideband system have electromagnetic interference. The problem can be solved by designing an ultra-wideband multi-stopband antenna which can work in multiple frequency bands at the same time and reduce the number and volume of antenna in the system. These two kinds of antennas have the advantages of simple structure, small size, easy integration and so on. First, three UWB multi-stop band antennas are designed by using the loaded resonant structure technology. UWB antenna is fed by coplanar waveguide, semi-circular radiation patch is selected, and floor chamfering technique is used to optimize impedance matching, so that the bandwidth of the antenna can cover the frequency band of UWB system. The double stopband characteristics of the antenna are realized by loading two different resonant rings on the back of the dielectric plate. Based on the double stopband antenna, the current distribution diagram of the antenna is further analyzed, the structure of the antenna radiation patch is optimized, and the filter frequency band of the antenna is increased on the basis of the miniaturization of the antenna by using the loading radiation patch technique. From the analysis of the simulation results and the processing test results, it is concluded that the designed UWB multi-stopband antenna can reduce the electromagnetic interference between the UWB system and the narrow band system such as WLAN,WIMAX,X-band. Using microstrip feed and branch radiation, a new miniaturized three-way antenna is designed. By adjusting the size and position of the branches, the band of the antenna can be optimized. The size of the antenna is only 24 脳 19.9 脳 1.524mm3, and the floor size of the rectangular antenna is only 2 脳 19.9 脳 1.524mm3.The size of the antenna is only 0.018 mm3.. By reducing the size of the floor, the coupling effect of the floor is reduced, and the effect of the floor on the radiation performance of the antenna is reduced. The antenna is simple in structure, small in size and easy to process. The simulated and measured results show that the S11 parameters of the antenna are below -10 dB and cover the 2.4 ~ 2.484 GHz,3.3 / 3.6 GHz,5.15 / 5.35 GHz band of M-WIMAX / WLANC-band communication band. By integrating the UWB antenna with the planar microstrip filter, the UWB antenna has the effect of stopband filtering in the three frequency bands of the WLAN,WIMAX,X-band system. The antenna processing samples were tested by Agilent ZVB20 vector network analyzer. The antenna pattern and gain parameters were measured in the microwave darkroom. The simulation results of the antenna were in good agreement with the experiment.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN822
【参考文献】
相关期刊论文 前2条
1 吕文俊;程崇虎;朱洪波;;小型平面超宽带天线的研究进展[J];中国电子科学研究院学报;2007年06期
2 李海英,杨汝良;超宽带雷达的发展、现状及应用[J];遥感技术与应用;2001年03期
，本文编号：2225979
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