Guorui Han, Zijun Zheng, Jinrong Su, Hao Yuan, Wenmei Zhang
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引用次数: 0
摘要
演示了一种具有稳定增益的新型宽带非均匀元面天线。非均匀元面由方形贴片和环组成，并由槽形天线激励。根据特征模态分析，选择了两个电流方向相同的特征模态，从而在较宽的频率范围内实现了稳定的辐射性能。通过组合元表面和槽形天线的谐振模式，实现了宽带工作。测量结果表明，拟议天线的 -10 dB 阻抗带宽为 4.3 至 8.4 GHz（64.57%），2 dB 增益带宽为 4.3 至 6.2 GHz（36.2%），峰值增益为 9.42 dBi。此外，还实现了宽边辐射性能。
Wideband nonuniform metasurface antenna with stable gain
A novel wideband nonuniform metasurface antenna with stable gain is demonstrated. The nonuniform metasurface is composed of square patches and rings and is excited by a slot antenna. Based on characteristic mode analysis, two characteristic modes with same current direction are selected to achieve stable radiation performance in a wide frequency range. The wideband operation is achieved by assembling the resonant modes of the metasurface and slot antenna. The measured results show that the −10 dB impedance bandwidth of the proposed antenna is from 4.3 to 8.4 GHz (64.57%), and the 2 dB gain bandwidth is from 4.3 to 6.2 GHz (36.2%) with a peak gain value of 9.42 dBi. Moreover, broadside radiation performance is achieved.
期刊介绍：
The prime objective of the International Journal of Microwave and Wireless Technologies is to enhance the communication between microwave engineers throughout the world. It is therefore interdisciplinary and application oriented, providing a platform for the microwave industry. Coverage includes: applied electromagnetic field theory (antennas, transmission lines and waveguides), components (passive structures and semiconductor device technologies), analogue and mixed-signal circuits, systems, optical-microwave interactions, electromagnetic compatibility, industrial applications, biological effects and medical applications.
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