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类型 基础研究 预答辩日期 2018-03-10
开始(开题)日期 2015-06-10 论文结束日期 2017-12-08
地点 江宁无线谷A3楼3412会议室 论文选题来源 973、863项目     论文字数 6.41 (万字)
题目 基片集成毫米波天线与阵列的研究
主题词 基片集成波导,天线阵列,毫米波
摘要 天线是微波毫米波无线系统中不可或缺的关键部件。随着新兴无线系统,如第五代移动通信、高精度定位与高分辨率成像等的快速发展,对数据的高速率传输提出了前所未有的要求。另一方面,毫米波频段相对于微波低频段具有充足的频谱资源。因此,研究和发展低成本高性能的毫米波基片集成天线与阵列具有十分重要的意义。基片集成波导(SIW: Substrate Integrated Waveguide)具有自封闭、低损耗、成本低,平面集成等优点。本文基于基片集成波导技术,开展毫米波天线与阵列的研究,设计研制了94GHz频段差分馈电的低副瓣阵列天线、60GHz频段差分馈电的双极化阵列天线、多极化平面集成阵列天线、宽带三维基片集成线极化与圆极化微带天线阵列、三维基片集成的单脉冲阵列天线、W波段基片集成多波束阵列天线等。论文主要工作如下: 绪论部分简要回顾了毫米波系统的应用背景及其频谱资源划分,介绍了基片集成波导技术及相关天线与阵列的研究现状,阐述了本论文的研究目标和主要内容。 第一章基于基片集成波导馈电网络,分别设计实现了差分馈电的94GHz低副瓣阵列天线和60GHz双极化阵列天线。差分馈电的天线可以与后端差分电路或者芯片直接集成,从而避免了巴伦转换带来的额外损耗与电路面积增加。针对低副瓣设计,采用基片集成波导电磁耦合级联的宽度锥削渐变的不等宽贴片阵列,实现了E面方向图的低副瓣;通过多级不等分基片集成波导功分器级联构成的低副瓣馈电网络实现了H面辐射方向图的低副瓣。对于双极化天线,通过腔体和贴片耦合产生的双谐振展宽了天线工作带宽,通过寄生堆叠的背腔贴片子阵提高了天线的方向性。此外,正交差分馈电降低了天线的交叉极化,提高了端口隔离度。所有天线都采用普通的印刷电路板工艺制作,仿真与测试结果证明了设计方法的正确性。 第二章基于缝隙加载的高次模谐振微带贴片,提出并实现了基于基片集成波导馈电网络的多极化阵列天线。微带贴片工作于高次谐振模式,增大了贴片的口径面积,使得正交的双极化基片集成波导能够有足够的空间进行排布,从而实现了基片集成波导宽边缝隙耦合馈电的双极化微带贴片天线。加载的缝隙有效地改善了天线方向图。基片集成波导耦合缝隙与贴片的双重谐振有效地展宽了天线的工作带宽。基于此,使用单层的基片集成波导馈电网络,实现了2 2的极化可调整的阵列天线,天线阵列具有两个端口,通过控制天线端口不同的激励信号,阵列天线可实现垂直线极化,水平线极化,左旋圆极化,右旋圆极化的极化特性。随后,给出了多层结构的双极化天线单元,由于双极化基片集成波导分别位于两层基片中,避免了单层布局双极化通道的交叉重叠,从而简化了馈电网络的布局,有效地减小馈电网络的面积,同时可以更加灵活地拓展阵列排布。最后,文中实现了多层基片结构的4 4阵列天线,该阵列天线实现了双线极化窄波束辐射特性和高的端口隔离度。所有天线使用标准的印刷电路板工艺制作,实验结果验证了设计思路的正确性。本章部分内容已在国际核心期刊IEEE Trans. on Antennas and Propagation上发表。 第三章基于微带贴片天线和基片集成波导实现了宽带三维基片集成线极化和圆极化阵列天线。天线由水平的辐射贴片和垂直或者三维的基片集成波导馈电网络构成。这种乐高积木(LEGO)形式的构建为三维基片集成天线探索了一种方向,提供了一种灵活的空间能量分布策略。相比于三维的金属波导结构,基片集成的形式具有成本低廉,重量轻便,拓扑灵活的优点。在三维基片集成线极化天线中,垂直腔耦合的贴片天线展示了宽的工作带宽,低的交叉极化,对称的方向图,稳定的增益等优点。在三维基片集成圆极化阵列天线中,顺序旋转的2x2 H形贴片阵列,通过三维空间分布的基片集成波导馈电网络,在有限的口径下实现了顺序旋转激励需要的功率分配,从而使圆极化天线获得了宽的轴比带宽。三维基片集成天线与阵列使用标准的印刷电路板工艺制作,仿真与实验结果一致,验证了设计思路的可行性与正确性。最后,对这种三维基片集成形式的天线可能的应用场景进行了分析与讨论。本章内容已在国际核心期刊IEEE Antennas and Wireless Propagation Letters上发表。 第四章基于微带天线及相关的基片集成波导和差波束形成网络,实现了三维基片集成的线极化与圆极化单脉冲阵列天线。天线由水平的辐射贴片阵列与垂直或三维的基片集成波导单脉冲和差波束形成网络构成。一维单脉冲天线使用了两种单脉冲形成网络,分别为180°定向耦合器和基片集成魔T,使用不同的贴片形式分别实现了线极化和圆极化的电磁波辐射,结果表明基于魔T的单脉冲阵列天线可以获得更好的端口隔离度。在二维圆极化单脉阵列天线中,使用了由基片集成魔T,垂直转接,T型结等组成的二维和差波束形成网络。所有天线使用标准的印刷电路板工艺制作,实现了三维结构的基片集成单脉冲天线,具有成本低,重量轻等优点,仿真与实验结果验证了设计方法的可行性。 第五章设计实现了W波段固定波束和多波束基片集成串联贴片阵列天线。串馈阵列天线可以有效减小馈电网络的尺寸与损耗,微带线级联的贴片子阵通过基片集成波导缝隙耦合馈电于中心贴片,获得了基片集成波导馈电的串联贴片天线子阵。通过调整贴片单元数目可以控制E面波束宽度,提高增益。这种配置一方面减少了基片集成波导的密度,为获得结构紧凑的阵列天线创造了有利条件,同时引入基片集成波导馈电结构,可以在毫米波频段与低损耗的基片集成波导波束形成网络集成,形成特定波束阵列天线。基于此,文中设计实现了工作在W波段的固定波束和多波束基片集成阵列天线,其使用印刷电路板工艺制作,具有平面、易于集成,重量小和成本低等优点。本章部分内容已在国际会议2017 11th European Conference on Antennas and Propagation (EuCAP) 上发表。
英文题目 Investigations on Millimeter-Wave Substrate Integrated Antennas and Arrays
英文主题词 substrate integrated waveguide (SIW), antennas and arrays, millimeter wave
英文摘要 Antennas are the essential building parts of the microwave and millimeter-wave wireless systems. With the development of emerging wireless system, for example, the fifth generation (5G) communication, high-precision position and high-resolution imaging,it raises an unprecedented interest on high rate of data transmission. On the other hand, millimeter-wave band has relatively sufficient spectrum resource compared with lower microwave frquency band. Therefore, it is of great significance to investigate and develop substrate integrated antennas and arrays with low cost and high performance at millimeter-wave band. Substrate integrated waveguide (SIW) has self-shielding architecture, low loss, low cost and planar integration ability. Base on these, this dissertation focuses on the investigations of millimeter-wave subatrate integrated antennas and arrays, including 94-GHz differentially-fed low-sidelobe array antenna, 60-GHz differentially-fed dual-polarization array antenna, polarization-adjustable planar integrated antenna array, wideband three-dimensional linearly and circularly polarized microstrip array antenna, three-dimensional subatrate integrated monopulse array antenna, and W-band multi-beam array antenna, etc. The dissertation is organized as follows: The introduction starts with a brief review of the millimeter-wave system applications and the associated frequency spectrum allocation. Then, the research status of topic on SIW technology and related antenna and array is introduced. Finally, the research contents and objectives in the dissertation are described. Chapter one designs and implements two differential-fed substrate integrated array antennas, which present the co-design perspective to directly integrate antenna with the differential circuit or chip nonuse of any Balun transition for saving loss and volume of whole system. In the 94-GHz low-sidelobe array antenna, patches are series-connected by electromagnetically-coupled coplanar SIW, their unequal widths are tapered for E-plane low sidelobe. Low-sidelobe H-pane radiation pattern is achieved by multi-stage SIW unequal power dividers for tapered aperture distribution. In the 60-GHz dual-polarization antenna, coupled cavity and patch yield dual-resonance bandwidth enhancement, stacked cavity-backed patch subarray improve the antenna gain. Differential excitation provides antenna low cross-polarization level and high port-to-port isolation. All the antenna arrays are fabricated by the printed circuit board process. The simulated and measured results prove the feasibility of design. Chapter two presents a slot-loaded high-order-mode microstrip patch antenna driven by SIW for millimeter-wave multi-polarization applications. The radiated patch resonates at high-order mode, which causes an enlarged aperture and offer the space for the layout of orthogonal dual-polarization SIWs. The radiation pattern is improved by means of loaded slots on the patch. Dual-resonance impedance matching is achieved from the patch and SIW slot. A Ka-band 2x2 planar integrated antenna array with single-layer SIW feeder is designed to feature adjustable polarizations. Different polarization status, including vertical and horizontal linear, right handed and left handed circular polarizations, can be adjustable depending on the configuration of input signals. Morover, orthogonal SIW feedings in two-layer scheme is developed, which would get rid of the cross of two-polarization signals, provide a more compact, simple and flexible array topology. A 4x4 array antenna is implemented based on multi-layer SIW feeding network, which achieves dual polarizations with unidirectional radiation and high port-to-port isolation. All the antennas are fabricated by the printed circuit board process, experiment results demonstrate the correctness of dedign. Some works of this chapter were published in IEEE Trans. on Antennas and Propagation. Chapter three presents the wideband microstrip array antenna driven by SIW in three-dimensional architecture for linear and circular polarizations. The antenna arrays incorporates of the vertical or 3-D SIW feeding and horizontal radiation block. This LEGO style explores a 3-D substrate integrated antenna and array, and offering a flexible strategy for spatial power distribution. Compared with the 3-D metal-waveguide structure, SIW counterpart has low cost, light weight, and flexible topology. The SIW cavity vertically-coupled patch antenna with linear polarization exhibits numerous advantages, including wide bandwidth, stable gain, low cross polarization and symmetrical radiation pattern. For the circularly polarized 2x2 H-shape patch array antenna, improved axial ratio bandwidth is achieved from the desired sequential-rotation excitation offered by a 3-D SIW feeder within the limited radiation aperture. 3-D substrate integrated antenna arrays are fabricated by printed circuit board process. The consistent results in simulation and measurement prove the feasibility of design. Finally, possible applications of these 3-D integrated patch antennas are discussed and analyzed. Works of this chapter were published in IEEE Antennas and wireless Propagation Letters. Chapter four designs and implements some 3-D substrate integrated linearly- and circularly-polarized monopulse array antennas based on microstrip antenna and associated beam-forming network. Antenna arrays are composed of horizontal patch array and vertical or 3-D SIW comparator. Two types of comparator, 180°directional coupler and substrate integrated magic-T, are used for one-dimensional monopulse antenna array. Different radiated patches are used for generate linear and circular polarizations, respectively. The results indicate the monopulse array antennas relied on magic-T achieve better port-to-port isolation than coupler-based counterparts. In the two-dimensional circular-polarization monopulse array antenna, two-dimensional monopulse comparator is formed by multiple magic-Ts, vertical transition, and T-junction. All the antenna arrays are made by printed circuit board process with 3-D cost- and weight-effective architecture. Good agreement between two cases of results in simulation and measurement support the correctness of design. Chapter five provides the deisgn and implemention of W-band fixed- and multi-beam subatrate integrated series-connected patch array antennas. Series-fed technology could significantly decrease the loss and size of feeding network. The microstrip series-connected patches antenna is aperture-coupled by the slot loaded on the top surface of SIW, which offers narrowed beamwidth in E-plane and improved antenna gain. This special configuration could decrease the density of SIW and create favorable conditions for the compact structure of SIW-based antenna and array. Furthermore, the introduction of SIW feeding provides more flexible array topology and gets access to the integration with low-loss SIW beam-forming network for beam-scaning application at milllimeter-wave band. With this patch array and SIW network, W-band fixed- and multi-beam array antenna are designed and implemented. The antenna arrays are developed relying on low-cost printed circuit board technology, characterizing of easy integration, planar profile and small weight. Some works of this chapter were published in 2017 11th European Conference on Antennas and Propagation (EUCAP).
学术讨论
主办单位时间地点报告人报告主题
东南大学毫米波国家重点实验室 2014.04.08 江宁无线谷A3楼会议室 Steven Gao Low-cost smart antennas for advanced wireless systems
东南大学毫米波国家重点实验室 2014.04.22 江宁无线谷A3楼会议室 C-K Clive Tzuang THz electronics and Field Theory
东南大学毫米波国家重点实验室 2017.02.24 江宁无线谷A3楼会议室 Ke Wu Enabling Ambient Electromagnetic Energy Harvesting for Future Internet of Things and Smart Environment
东南大学毫米波国家重点实验室 2017.06.15 江宁无线谷A3楼会议室 Lei Zhu Pin-loaded Patch Antennas with Improved Functionalities
东南大学毫米波国家重点实验室 2013.12.30 江宁无线谷A3楼会议室 任凤朝 毫米波差分馈电集成天线
东南大学毫米波国家重点实验室 2014.04.20 江宁无线谷A3楼会议室 任凤朝 阻抗阶梯谐振器对称振子天线
蒙特利尔工学院PolyGrames研究中 2015.05.06 蒙特利尔工学院PolyGrames研究中心六楼会议室 任凤朝 Dual-polarization patch antenna fed by SIW
蒙特利尔工学院PolyGrames研究中心 2015.10.28 蒙特利尔工学院PolyGrames研究中心六楼会议室 任凤朝 3-D SIW-fed microstrip patch antenna
     
学术会议
会议名称时间地点本人报告本人报告题目
2014 3rd Asia-Pacific Conf. on Antennas and Propag. 2014.07.27 哈尔滨 Design and implementation of an SIW triple-mode filter
第十六届微波集成电路与移动通信学术会议 2016.10.20 上海 60GHz差分激励的双极化基片集成天线
     
代表作
论文名称
Three-Dimensional SIW-Driven Microstrip Antenna for Wideband Linear and Circular Polarization
W-band Series-Connected Patches Antenna for Multibeam Application Based on SIW Butler Matrix
Polarization-Adjustable Planar Array Antenna with SIW-Fed High-Order-Mode Microstrip Patch
 
答辩委员会组成信息
姓名职称导师类别工作单位是否主席备注
车文荃 正高 教授 博导 南京理工大学
刘少斌 正高 教授 博导 南京航空航天大学
郝张成 正高 教授 博导 东南大学
朱晓维 正高 教授 博导 东南大学
陈继新 正高 教授 博导 东南大学
      
答辩秘书信息
姓名职称工作单位备注
余超 副高 副教授 东南大学