印刷偶极子天线设计
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一种双极化印刷偶极子基站天线夏小勇;廖成【摘要】在传统的印刷偶极子上通过切角、向上弯折的形式来扩展偶极子的外围轮廓,并通过改变馈电开路枝节的宽度的方式来展宽天线的带宽,并将该结构应用于双极化基站天线中。
研究表明,单元天线在1.50~3.38GHz范围内,VSWR<2,相对带宽达到77%,获得了较好的带宽特性;组成双极化天线后,在1.8~2.7GHz的频率范围内,天线的交叉极化比、水平面波束宽度、隔离度等指标能较好满足移动通信的要求,可以应用于移动通信系统中。
%This paper proposes a method of extension of the outline profile by cutting angles and bent upward in the patch and of bandwidth extension through extending and changing open slot in feed location, which is implementedin the dual-polarized base station antenna. The research has shown thatthe single antenna has a bandwidth of 1.50-3.38GHz,and Voltage Standing Wave Ratio(VSWR) of less than 2. The relative bandwidth reached 77%, which gets a better bandwidth. As a dual-polarized antenna which could apply to mobile communication systems, its cross-polarization ratio, the horizontal plane beam width;isolation can preferably meet the requirements of mobile communication in the frequency scope of 1.8GHzto 2.7GHz.【期刊名称】《移动通信》【年(卷),期】2013(000)016【总页数】5页(P48-52)【关键词】印刷偶极子;基站天线;带宽【作者】夏小勇;廖成【作者单位】西南交通大学电磁场与微波技术研究所,四川成都610031;西南交通大学电磁场与微波技术研究所,四川成都610031【正文语种】中文【中图分类】TN828.61 引言随着移动通信的快速更新和发展,提高移动通信的信道容量变得日益重要。
一种基于共臂结构的双频印刷偶极子天线作者:刘鑫张帅来源:《现代信息科技》2022年第07期摘要:文章提出一种基于共臂结构的双频印刷偶极子天线,可同时工作在433 MHz和2 390 MHz,可广泛用于无线局域网、物联网通信领域。
该天线由一个工作在高频的二元双面印刷偶极子阵列和一个工作在低频的偶极子下臂组成。
一方面通过加载电容,将高频辐射体设计成为低频印刷偶极子的上臂,来构成低频对称阵子的完整结构。
另一方面通过加载电感,进一步缩短了低频阵子臂的长度。
关键词:共臂;双频;偶极子;天线中图分类号:TN92 文献标识码:A文章编号:2096-4706(2022)07-0039-04A Dual-Band Printed Dipole Antenna Based on the Shared ArmsLIU Xin1, ZHANG Shuai2(1.BeiDou Academy, Wuhan Qingchuan University, WuHan 430204, China; 2.Wuhan Second Ship Design and Research Institute, WuHan 430205, China)Abstract: This paper proposes a dual-band printed dipole antenna based on the shared arms structure, and it could work at 433 MHz and 2 390 MHz and it is widely used in fields of wireless local area networks, Internet of Things communication. The antenna is composed of a two-element double sided printed dipole array which works at high frequency and a dipole lower arm which works at low frequency. On the one hand, by loading capacitance, the high frequency radiation body is designed as the upper arm of the low frequency printed dipole to form the complete structure of thelow frequency symmetry array. On the other hand, by loading inductance, the length of the low frequency array arm is further shortened.Keywords: shared arm; dual-band; dipole; antenna0 引言全向天線作为一种基本的天线类型,有着广泛的应用,它被应用在形成无线扩频网络、点对点通信、数据传输等方面。
一种宽频带双极化印刷偶极子基站天线: A base?station antenna oscillator element suitable for wideband LTE antenna systems was designed and optimized. Based on the basic theory of printed dipole antenna and microstrip Balun, the multi?stage impedance matching Balun of the antenna was designed by analysis with an equivalent circuit model. The bandwidth of the antenna was expanded efficiently and [±45°] dual?polarization was realized by means of the parasitic patches and bow?tie design. The simulation results show that the bandwidth of the antenna,whose VSWR is ≤1.5 and the return loss is > 15 dB, reaches about 54.5% and can cover the bands of GSM1800/CDMA2000/WCDMA/TD?SCDMA/LTE system. In this range, VSWR, directivity, gain and isolation can satisfy the specifications of LTE multi?model systems. The antenna is easy to integrate and is applied to the base station LTE antenna systems with multiple modes.Keywords: base?station antenna; broadband;dual?polarization; printed dipole; Balun0 引言适用于多系统的宽带双极化天线是目前基站天线的主流设计[1],其中的天线通常采用偶极子天线结构。
带有新型寄生单元的印刷偶极子天线李晋阳张小苗杨倩赵旭东王银行(西安电子科技大学天线与微波技术国家重点实验室,西安710071)摘要:针对印刷偶极子带宽窄,增益相对较低,带内增益不稳定的缺点,本文设计了一种基于新型寄生单元的印刷偶极子, 具有平面结构,覆盖2.3GHz-3.9GHz频段,仿真及实测结果表明,该寄生单元能有效展宽带宽,提高增益,而且增益在绝大部分工作频带内稳定在9dB。
关键字:印刷偶极子,平面天线,寄生单元,宽带,高增益A Printed Dipole with Novel Parasitic ElementsLi Jinyang Zhang Xiaomiao Yang Qian Zhao Xudong Wang Yinhang(National Key Laboratory of Antennas and Microwave Technology,Xidian University, Xi’an 710071)Abstract:A printed dipole with novel parasitic elements is presented to improve the bandwidth and the gain, covering 2.3GHz~3.9GHz bandwidth. It has a steady gain of 9dB in most of the operating band .The simulated and measured results show the parasitic elements can increase the bandwidth and the gain efficiently.Keywords: printed dipole; planar antenna; parasitic element; wideband; high gain1 引言印刷偶极子除具有对称振子的性能外,还具有平面结构,易于与其他系统集成,体积小,制作简单,广泛应用于基站天线,射频识别等一系列现代通信领域。
宽带印刷偶极子天线
侯婷;李建周;韦高
【期刊名称】《科学技术与工程》
【年(卷),期】2010(010)032
【摘要】印刷在薄介质基片上的偶极子,其重量轻、易加工并且提供相当宽的带宽和高级化纯度,通常作为基站天线的辐射单元.介绍了一种由串联印刷偶极子对组成的宽带天线,该天线由两对偶极子组成,印刷在一个薄介质基片的正反面并通过平行带状线连通.该天线结构简单,便于印刷制作,是大型天线阵的理想辐射单元.给出了偶极子长度以及它们之间距离的变化对输入端反射系数(S11)的影响,可供工程设计参考.设计的天线其相对带宽可达62%(VSWR≤2.0),55%(VSWR≤1.5),中心频率为2.3 GHz.
【总页数】4页(P7934-7936,7946)
【作者】侯婷;李建周;韦高
【作者单位】西北工业大学电子信息学院,西安,710072;西北工业大学电子信息学院,西安,710072;西北工业大学电子信息学院,西安,710072
【正文语种】中文
【中图分类】TN821.4
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一种宽频带双极化印刷偶极子基站天线作者:李由张海民曹群生来源:《现代电子技术》2015年第01期摘要:设计并优化了一款适用于LTE天线系统的基站天线振子单元。
在印刷偶极子天线以及微带巴伦的基础上,通过等效电路模型进行分析,设计出该天线的多级阻抗匹配巴伦。
采用寄生贴片、领结型设计等技术,有效地拓展了天线频带带宽,实现了[±45°]双极化。
仿真结果表明,天线的VSWR≤1.5和回波损耗大于15 dB的带宽达到了54.5%,可以覆盖GSM1800,CDMA2000,WCDMA,TD⁃SCDMA和LTE系统。
在此频带范围内,该天线的驻波特性、方向性、增益和隔离度等指标均满足LTE多模式系统的指标。
同时该天线也易于制作,适用于LTE多模式基站天线系统。
关键词:基站天线;宽频带;双极化;印刷偶极子;巴伦中图分类号: TN821+.3⁃34 文献标识码: A 文章编号: 1004⁃373X(2015)01⁃0055⁃04Abstract: A base⁃station antenna oscillator element suitable for wideband LTE antenna systems was designed and optimized. Based on the basic theory of printed dipole antenna and microstrip Balun, the multi⁃stage impedance matching Balun of the antenna was designed by analysis with an equivalent circuit model. The bandwidth of the antenna was expanded efficiently and [±45°] dual⁃polarization was realized by means of the parasitic patches and bow⁃tie design. The simulation results show that the bandwidth of the antenna,whose VSWR is ≤1.5 and the return loss is > 15 dB, reaches about 54.5% and can cover the bands ofGSM1800/CDMA2000/WCDMA/TD⁃SCDMA/LTE system. In this range, VSWR, directivity,gain and isolation can satisfy the specifications of LTE multi⁃model systems. The antenna is easy to integrate and is applied to the base station LTE antenna systems with multiple modes.Keywords: base⁃station antenna; broadband; dual⁃polarization; printed dipole; Balun0 引言适用于多系统的宽带双极化天线是目前基站天线的主流设计[1],其中的天线通常采用偶极子天线结构。
第三章 半波長印刷偶極天線設計3-1設計目的偶極天線結構簡單也是理論最容易了解與推導的天線,因此是做為入門學習的最佳例子。
半波長偶極天線是利用諧振原理達到在空間中輻射特定頻率的一種天線,半波長偶極理論已經很成熟,詳細理論可參考一般天線理論書籍。
在微波頻率波段中,基於成本、美觀及其他優點,通常將半波長偶極天線印製在PCB (Printed circuit board) 上,稱為微帶天線(Microstrip antenna),微帶天線應用範圍非常廣泛,因此本章使用印刷電路微帶型結構(Microstrip and printed structure)進行偶極天線的設計與模擬。
3-2印刷偶極天線的原理一般微帶天線(Microstrip antenna)具有下列優點:(1)體積較小、輕量和平面組態。
(2)應用於印刷電路時容易製造,造價低廉。
(3)適合於小型結構體上,可與振盪器、放大器、可變衰減器、調變器、混波器,移相器等模組銜接並與積體電路在平面上可共存。
(4)可裝設於飛彈、火箭、人造衛星等超高速度飛翔體表面以供通信。
(5)RF訊號饋入線及週邊裝置與天線同時設計而製造於同一平面上。
(6)在同一平面板上可設計直線極化(垂直、水平)及圓極化(左、右旋轉)天線。
(7)容易配合單石微波積體電路(MMIC)(Monolithic microwave integratedcircuit)達到一體成形。
另外,微帶天線體積小,所以很容易裝進IC封裝結構蓋中(Package lid)裡,由於這種天線不需要很大的空間,通常是直接作成構裝(Package)的一部份。
但微帶天線也有下述缺點:(1)微帶天線之損失較大以致於天線增益較低,單元件天線之最大增益不容易超過20dB。
(2)大多數的微帶天線均保持單一面電波(Uni-directional)輻射。
(3)饋入RF訊號的傳輸線與天線輻射體之間隔離比較困難。
(4)天線之功率容量較低,換言之,高功率天線不能期待使用此種形式天線。