幾種典型的小型化印刷天線的設計與研制
發(fā)布時間：2018-09-06 09:54
【摘要】：超寬帶(ultra-wideband,UWB)技術在無線電通信、微波導航、雷達探測等領域的應用十分廣泛。天線作為系統(tǒng)的終端器件,可以接收和輻射無線電波,是系統(tǒng)中重要的組成部分。現有的無線通信系統(tǒng)如無線局域網、全球微波接入網技術、C波段衛(wèi)星通信系統(tǒng)及X波段海事衛(wèi)星通信系統(tǒng)與超寬帶系統(tǒng)間存在電磁干擾,而通過設計具有濾波特性的超寬帶多阻帶天線可以解決這一問題;多通帶天線可以同時工作在多個頻帶,減小了系統(tǒng)的天線數量和體積。這兩類天線都具有結構簡單、尺寸小、易集成等優(yōu)點,是很多天線研究者關注的熱點。首先利用加載諧振結構技術設計了三款超寬帶多阻帶天線。超寬帶天線采用共面波導饋電方式,選用半圓形輻射貼片,并采用地板倒角技術來優(yōu)化阻抗匹配,使得天線的帶寬可以覆蓋超寬帶系統(tǒng)的頻段。利用在介質板背面加載兩個不同的諧振環(huán)實現天線的雙阻帶特性。在雙阻帶天線的基礎上,進一步分析天線的電流分布圖,優(yōu)化天線輻射貼片的結構,并利用加載輻射貼片技術在保證天線小型化的基礎上增加天線的濾波頻段。從仿真結果和天線的加工實物測試結果分析得出,設計的超寬帶多阻帶天線可以減小UWB系統(tǒng)和WLAN、WIMAX、X-band等窄帶系統(tǒng)間的電磁干擾。利用微帶饋電、枝節(jié)輻射的方式,設計了一款新型的小型化三通帶天線。調節(jié)枝節(jié)的尺寸和位置,可以優(yōu)化天線的通帶頻段。天線的尺寸僅為24×19.9×1.524mm3,天線矩形的地板尺寸僅為2?7.4?0.018 mm3。通過減小地板尺寸,減小了地板的耦合效應,減小了地板對天線輻射性能的影響。天線的結構簡單、尺寸小并且易于加工。仿真和實測結果顯示天線的S11參數在-10 dB以下覆蓋M-WIMAX、WLAN、C-band三大通信頻段系統(tǒng)的2.4 2.484 GHz、3.3 3.6 GHz、5.15 5.35 GHz頻段。通過將超寬帶天線與平面微帶濾波器集成設計,實現UWB天線在WLAN、WIMAX、X-band三個系統(tǒng)頻段具有阻帶濾波效果。利用Agilent ZVB20矢量網絡分析儀對天線加工樣品進行測試,在微波暗室中測試天線的方向圖及增益等參數,得到天線的仿真結果和實驗基本吻合。
[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.
【學位授予單位】：電子科技大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TN822
本文編號：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.
【學位授予單位】：電子科技大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TN822
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相關期刊論文 前2條
1 呂文俊;程崇虎;朱洪波;;小型平面超寬帶天線的研究進展[J];中國電子科學研究院學報;2007年06期
2 李海英,楊汝良;超寬帶雷達的發(fā)展、現狀及應用[J];遙感技術與應用;2001年03期
，本文編號：2225979
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