用于k波段和ka波段无线应用的宽带微型天线

Hagar A. Farag, A. E. Farahat, A. I. Bahnacy, K. Hussein
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引用次数: 0

摘要

提出了一种设计单面印刷宽带平面天线的新方法。该天线具有较高的辐射效率和较宽的阻抗匹配频带。该天线是由多个合并的圆形扇形贴片辐射体组成的印刷成冠状的单极片。辐射单极子贴片的几何形状只用一个长度参数和两个角度参数来描述。为了进一步提高带宽和辐射效率,将辐射贴片通过共面波导(CPW)馈送,在高质量薄介质衬底的一侧印制天线结构,有效地降低了工作频带内的损耗。仿真和测量结果表明,该天线可以在k波段(18 ~ 27 GHz)和ka波段(27 ~ 40 GHz)有效工作。制作了该天线,并对仿真结果进行了实验验证。结果表明,该天线的百分比带宽(%BW)为76%,比率带宽(RBW)为2.2:1,带宽维比(BDR)为278。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Wideband Miniature Antenna for K-Band and Ka-Band Wireless Applications
A novel method is proposed to design a wideband planar antenna printed on a single side of a thin dielectric substrate. The proposed antenna has enhanced radiation efficiency and wide frequency band of impedance matching. This antenna is a printed as crown-shaped monopole patch composed of multiple merged circular sector patch radiators. The geometry of the radiating monopole patch is described by only one length parameter and two angular parameters. For more enhancement of the bandwidth and radiation efficiency, the radiating patch is fed through a coplanar waveguide (CPW) to produce the antenna structure printed on one side of a high-quality thin dielectric substrate which effectively reduces the losses within the operational frequency band. It is shown, through simulation and measurements, that the proposed antenna can efficiently operate over the K-band (18 – 27 GHz), and Ka-band (27 – 40 GHz). The proposed antenna is fabricated and subjected to experimental validation of the simulation results. It is shown that the proposed antenna has a percentage bandwidth (%BW) of 76%, ratio bandwidth (RBW) of 2.2: 1, and bandwidth-dimension ratio (BDR) of 278.
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