微波无线电力传输用圆形单极时间反转镜

2021 IEEE AFRICON Pub Date : 2021-09-13 DOI:10.1109/africon51333.2021.9570867

Baidenger Agyekum Twumasi, Jia‐lin Li, Ebenezer Tawiah Ashong, S. Menanor

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引用次数: 0

摘要

提出了一种用于微波无线功率传输的圆形微带贴片天线时间反转镜的设计。该天线具有4.9 GHz带宽，覆盖5.8 GHz WLAN频段。利用缺陷提高了天线TRM的带宽和回波损耗，增强了辐射，适用于离体生物医学应用的无线电力传输。对于所提出的天线时间反转镜，槽作为散射体，通过变换结构增强了天线时间反转镜的性能。该天线设计在相对介电常数为2.65，损耗正切为0.003的微波衬底上。它具有30mm × 28mm的紧凑尺寸。在圆形贴片上蚀刻矩形支架形状的缝隙，改善其回波损耗，最大回波损耗为-55dB，优于-10dB，阻抗带宽为3.67 ~ 8.57 GHz，改善了辐射方向图。在天线的部分接地面上也蚀刻了方槽。

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Circular Monopole Time Reversal Mirror for Microwave Wireless Power Transfer Applications

This paper presents the design of a circular microstrip patch antenna time reversal mirror (TRM) for microwave wireless power transfer applications. The proposed antenna has 4.9 GHz bandwidth covering the 5.8 GHz WLAN band. Defects were used to improve the bandwidth and return loss of the proposed antenna TRM with enhanced radiation suitable for wireless power transfer for off-body biomedical applications. For the antenna time reversal mirror proposed, the slots act as scatterers enhancing the performance of the antenna time reversal mirror with transforming structures. The proposed antenna is designed on a microwave substrate of relative permittivity of 2.65 having a loss tangent of 0.003. It has a compact size of 30mm by 28mm. A rectangular bracket shaped slot was etched on the circular patch to improve its return loss with a maximum return loss of -55dB, better than -10dB with impedance bandwidth of 3.67-8.57 GHz and improved radiation pattern. Square slots were also etched on the partial ground plane of the proposed antenna.

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