激光与光电子学进展, 2018, 55 (3): 031602, 网络出版: 2018-09-10
提高微带天线增益的宽带低损左手结构设计 
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Design of Broadband and Low Loss Left-Handed Structure for Improving Microstrip Antenna Gain
材料 K波段 等效电路理论 宽频带 低损耗 微带天线 materials K-band equivalent circuit theory broadband low loss microstrip antenna
摘要
为了解决传统左手材料频带窄、损耗高的问题,基于等效电路模型理论和镜像对称原理,设计了一种新型左手结构。研究结果表明,此结构在16.5~25.4 GHz频段内的等效介电常数和等效磁导率均为负,绝对带宽达到8.9 GHz,并且具有低损耗特性。相比于传统的微带天线,基于此左手结构的微带天线的增益提高了3.38 dB,半功率波束宽缩小了41.11°,有效辐射功率得到明显增强。
Abstract
In order to solve the problems of narrow band and high loss related to traditional left-handed materials (LHM), a novel structure of LHM is designed based on the equivalent circuit theory and mirror-symmetry principle. The results show that, as for this structure, its effective permittivity and effective permeability are both negative, its absolute bandwidth reaches 8.9 GHz, and it possesses a low loss characteristic in the frequency range from 16.5 GHz to 25.4 GHz. Compared with those of the traditional microstrip antenna, the gain of the microstrip antenna based on this left-handed structure increases by 3.38 dB, the half power beam width reduces by 41.11°, and the effective radiated power is obviously enhanced.
朱亚鹏, 张正平, 刘桥. 提高微带天线增益的宽带低损左手结构设计[J]. 激光与光电子学进展, 2018, 55(3): 031602. Yapeng Zhu, Zhengping Zhang, Qiao Liu. Design of Broadband and Low Loss Left-Handed Structure for Improving Microstrip Antenna Gain[J]. Laser & Optoelectronics Progress, 2018, 55(3): 031602.
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