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超宽频带通信传输中的天线优化设计
周 添,岳艳涛,徐冠雄,张洋洋,季春霖
作者单位
周 添 Shenzhen Kuang-Chi Institute of Advanced TechnologyShenzhen Guangdong 518057China 
岳艳涛 Shenzhen Kuang-Chi Institute of Advanced TechnologyShenzhen Guangdong 518057China 
徐冠雄 1.Shenzhen Kuang-Chi Institute of Advanced TechnologyShenzhen Guangdong 518057China2.State Key Laboratory of Metamaterial Electromagnetic Modulation TechnologyShenzhen Guangdong 518057China 
张洋洋 1.Shenzhen Kuang-Chi Institute of Advanced TechnologyShenzhen Guangdong 518057China2.State Key Laboratory of Metamaterial Electromagnetic Modulation TechnologyShenzhen Guangdong 518057China 
季春霖 1.Shenzhen Kuang-Chi Institute of Advanced TechnologyShenzhen Guangdong 518057China2.State Key Laboratory of Metamaterial Electromagnetic Modulation TechnologyShenzhen Guangdong 518057China 
摘要:
超宽频带传输在短距离内(通常10 m范围内)利用自身的带宽优势,可以通过较低的能量(功率谱密度小于-41.3 dBm/MHz)和较大带宽(超过500 MHz)进行高速通信(100 Mb/s以上,理论上可以达到1 Gb/s)。超宽频带通信技术与多入多出技术的结合还可以进一步增加通信容量。作为超宽带通信应用中重要的一环,超宽频带天线的优化设计显得尤为重要。超宽频带天线为带宽超过500 MHz或相对带宽大于20%的宽频天线。本通信选取最具代表性的Vivaldi天线为例,通过统计优化算法对多目标任务进行优化,得到130 mm ×100 mm尺寸天线的-10 dB带宽达2.4 GHz。该设计方法对宽频带、多参数天线设计有较好的借鉴。
关键词:  超宽频通信  小型化天线设计  超宽频天线  多目标优化
DOI:10.11805/TKYDA201501.0076
分类号:
基金项目:广东省引进创新科研团队计划基金资助项目(2009010005);广东省超材料微波射频重点实验室基金资助项目(2011A060901010);深圳市变换光学与空间调制技术重点实验室基金资助项目(CXB201109210100A);深圳市科技计划基金资助项目(JC201005280649A)
Antenna optimization in the application of ultra-wideband communication
ZHOU Tian1, YUE Yantao1, XU Guanxiong2,3, ZHANG Yangyang2,3, JI Chunlin2,3
1.Shenzhen Kuang-Chi Institute of Advanced Technology,Shenzhen Guangdong 518057,China;2.1.Shenzhen Kuang-Chi Institute of Advanced Technology,Shenzhen Guangdong 518057,China;3.2.State Key Laboratory of Metamaterial Electromagnetic Modulation Technology,Shenzhen Guangdong 518057,China
Abstract:
Ultra-wideband(UWB) communication shows its advantages of fast data transfer(100 Mb/s or above) in a relatively short distance(typically below 10 m) with relatively weak power consumption (energy spectrum below -41.3 dBm/MHz). Integrated with Multiple Input Multiple Output(MIMO) technology, channel capacity could be further enhanced. As a critical link in the ultrawideband communication,UWB antenna needs extra efforts in design optimization to boost the performance of the whole system. UWB antenna is defined as the antenna whose bandwidth exceeds 500 MHz or relative bandwidth greater than 20%. This paper takes the most representative Vivaldi antenna as a show case for multi-objective optimization design with statistical methods. The optimized miniaturized antenna(sized130 mm×100 mm) shows a -10 dB bandwidth of 2.4 GHz. The design method provides guidance in common wideband,multi-parameter antenna design.
Key words:  ultra-wideband communication  miniaturized antenna design  ultra-wideband antenna  multi-objective optimization

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