电子、通信与自动控制

ETC 系统中功分比可变的双频正交功分器

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  • 1. 华南理工大学 电子与信息学院,广东 广州 510640; 2. 广东工业大学 自动化学院,广东 广州 510006
李红涛(1977-),男,博士生,讲师,主要从事无线通信系统的研究. E-mail: LHT88@126. com

收稿日期: 2014-08-13

  修回日期: 2014-11-27

  网络出版日期: 2015-02-10

基金资助

广东省 - 国家自然科学联合基金资助项目(U1035002);广东省教育厅校企合作项目(CGZHZD1102);粤港科技攻关项目(2011A011305001,2011A011302001)

Dual-Band Orthogonal Power Divider with Variable Power Division Ratio Applied to ETC System

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  • 1. School of Electronic and Information Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China;2. Faculty of Automation,Guangdong University of Technology,Guangzhou 510006,Guangdong,China
李红涛(1977-),男,博士生,讲师,主要从事无线通信系统的研究. E-mail: LHT88@126. com

Received date: 2014-08-13

  Revised date: 2014-11-27

  Online published: 2015-02-10

Supported by

Supported by the National Natural Science Foundation of China(NSFC)-Guangdong ( U1035002) and the Guangdong-Hong Kong Key Project of Science and Technology(2011A011305001,2011A011302001)

摘要

文中提出一种可用于多波束电子不停车收费(ETC)系统的新型正交 Hybrid 耦合器. 为适应 ETC 系统的不同频段应用,该新型正交耦合器设计为覆盖两个常用的 ETC 系统工作频段:2.4GHz(2.2 ~2.6GHz)和 5.8GHz(5.5 ~6.0GHz). 该耦合器在上述两个频带上具有不同的功率分配特性——在2.4GHz 频段为等比例正交输出,在5.8GHz 频段则是在 0.6 ~7.3dB 范围内的正交输出. 文中提出的正交功分器具有频带宽度大、电路尺寸小的优点. 实物测试和仿真数据吻合良好,说明该功分器是有效的.

本文引用格式

李红涛 胡斌杰 张洪林 魏晓东 曾伟森 . ETC 系统中功分比可变的双频正交功分器[J]. 华南理工大学学报(自然科学版), 2015 , 43(3) : 72 -77 . DOI: 10.3969/j.issn.1000-565X.2015.03.011

Abstract

Proposed in this paper is a novel orthogonal Hybrid coupler applied to multi-beam electronic toll collec-tion (ETC) systems. In this coupler,two common frequency bands of ETC system including 2. 4 GHz (2. 2 ~2. 6GHz)and 5. 8GHz (5. 4 ~ 6. 0 GHz) are covered to adapt different working frequency bands,and different power distribution characteristics are endowed in the two frequency bands,that is,equally orthogonal output in 2. 4GHz band and orthogonal output in the range of 0. 5 ~7dB in 5. 8GHz band. The proposed divider is of broad bandwidth and small circuit size,and,it is proved feasible due to the good agreement between real test results and simulation data.
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