宽带圆极化整流天线研究

发布时间：2018-07-05 11:27

本文选题：宽带圆极化整流天线 + 双频圆极化天线　；参考：《电子科技大学》2014年硕士论文

【摘要】：微波能量传输技术对于人类生活有着深远的影响,近年来备受人们关注。整流天线则是微波能量传输中的核心器件,其研究对于微波能量传输技术的发展是至关重要的。目前研究的大多数整流天线只能在较窄的频段内工作,而且许多是线极化整流天线。窄带整流天线的工作频带受限,使得其应用场合比较单一;而线极化整流天线在接收电磁波时需要极化对准,使得其摆放位置受限。因此实现宽带圆极化整流天线对于微波输能技术而言有着重要的意义。本论文主要研究具有宽带特性的圆极化整流天线,最终设计出两种具有较宽频带、良好圆极化特性的天线结构,以及一种具有较高效率的宽带整流电路结构,并用它们设计了一个性能优良的宽带圆极化整流天线。该整流天线的圆极化工作频段为1.9 GHz—2.5 GHz,整流效率超过43%,最高可达63.8%。本论文主要包括以下内容。第一章主要介绍了整流天线研究的背景和意义,并进一步阐述了宽带圆极化整流天线研究的意义以及整流天线目前的发展现状。第二章介绍了本论文中主要应用的背景知识。主要介绍了微带天线的基本原理、圆极化原理、整流二极管分析以及滤波器原理。第三章介绍了两款宽带圆极化天线的设计。其中一款是采用模式分析法设计的双频宽带圆极化天线,圆极化工作带宽在2.00 GHz-2.65 GHz和5.48 GHz-6.00GHz。另一款是利用创新的外场干扰法理念设计的共面波导馈电的宽带圆极化天线,对其进行了仿真和测量,仿真的绝对带宽超过1 GHz,中心频率为2.35 GHz。第四章设计了一种宽带整流电路。该电路采用主要器件为肖特基二极管HSMS8101,整流形式为半波整流。二级滤波器采用低通滤波器代替传统形式的1/4波长阻抗线阻断高次谐波,可以有效抵制高次谐波分量,实现电路的宽带整流,最佳工作频段覆盖1.90 GHz-2.50 GHz。第五章将整流天线的天线和电路进行了联合仿真,将二者连接到一起进行参数优化,以达到最好的设计效果。第六章对本论文进行了总结,并提出了下一步研究的展望。
[Abstract]:Microwave energy transmission technology has a profound impact on human life, and has attracted much attention in recent years. Rectifier antenna is the core device of microwave energy transmission, and its research is very important for the development of microwave energy transmission technology. At present, most of the rectified antennas can only work in narrow band, and many of them are linear polarization rectifier antennas. The narrow band rectifier antenna is limited in its working frequency band, which makes its application more simple, while the linear polarization rectifier antenna needs polarization alignment when receiving electromagnetic wave, so its placement is limited. Therefore, the realization of broadband circular polarization rectifier antenna is of great significance for microwave energy transmission technology. In this paper, we mainly study the circular polarization rectifier antenna with wide band characteristics. Finally, we design two kinds of antenna structures with wide band and good circular polarization characteristics, and one kind of broadband rectifier circuit structure with high efficiency. A broadband circularly polarized rectifier antenna with excellent performance is designed. The circular polarization frequency range of the rectifier antenna is 1.9 GHz ~ 2.5 GHz, the rectifying efficiency is over 43 and the maximum is 63.8B. This thesis mainly includes the following contents. The first chapter mainly introduces the background and significance of the research on the rectifier antenna, and further expounds the significance of the research on the wide-band circularly polarized rectifier antenna and the current development of the rectifier antenna. The second chapter introduces the background knowledge of the main applications in this paper. The basic principle of microstrip antenna, the principle of circular polarization, the analysis of rectifier diode and the principle of filter are introduced. Chapter 3 introduces the design of two broadband circularly polarized antennas. One of them is a dual-band circular polarization antenna designed by mode analysis. The working bandwidth of circular polarization is 2.00 GHz to 2.65 GHz and 5.48 GHz to 6.00 GHz. Another is a coplanar waveguide fed wideband circular polarization antenna which is designed by using an innovative external field interference method. The simulation and measurement show that the absolute bandwidth of the antenna is more than 1 GHz and the center frequency is 2.35 GHz. In chapter 4, a broadband rectifier circuit is designed. The main device of this circuit is Schottky diode HSMS 8101, and the rectifier form is half wave rectifier. In the second stage filter, the low-pass filter is used instead of the traditional 1 / 4 wavelength impedance line to block the high-order harmonics, which can resist the high-order harmonic component effectively and realize the broadband rectifier of the circuit. The optimal operating frequency range is 1.90 GHz ~ 2.50 GHz. In the fifth chapter, the antenna and circuit of the rectifier antenna are simulated, and the two are connected together to optimize the parameters to achieve the best design effect. The sixth chapter summarizes this paper and puts forward the prospect of the next research.
【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】：TN820

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