一种新型改进接地宽带圆极化单极天线

2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2018-12-01 DOI:10.1109/ISAPE.2018.8634293

Lei Wang, Wenxiao Fang, Y. En, Yun Huang, Weiheng Shao, Bin Yao

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引用次数: 1

摘要

本文介绍了一种改进接地的宽带圆极化单极天线。所提出的同轴探头馈电天线由一个带有l型支路的方形地组成，能够产生宽带CP辐射。此外，在接平面内嵌入了一个i型狭缝，以改善阻抗匹配。该天线具有1.82 ~ 4.21 GHz的10db回波损耗带宽(79.3%以3.02 GHz为中心)和1.84 ~ 3.95 GHz的宽3db轴向比(AR)带宽(72.9%以2.89 GHz为中心)。测得的AR频段增益大于2.0 dBic, AR频段内的增益变化小于1 dBic，在宽频段内具有良好的平坦增益特性。仿真和实测结果均验证了所提出的设计。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A New Broadband Circularly Polarized Monopole Antenna With Modified Ground

This letter presents a new broadband circularly polarized (CP) monopole antenna with modified ground. The proposed antenna fed by coaxial probe consists of a square ground loaded with an L-shaped branch, which is capable of generating broadband CP radiation. In addition, an I-shaped slit is embedded into the ground plane to improve the impedance matching. The presented antenna has a 10 dB return loss bandwidth from 1.82 to 4.21 GHz (79.3% centered at 3.02 GHz), and a wide 3 dB axial-ratio (AR) bandwidth from 1.84 to 3.95 GHz (72.9% centered at 2.89 GHz). The measured gains are greater than 2.0 dBic in the AR band, and the gain variation within the AR band is less than 1 dBic, which means a good flat gain feature in the broad frequency band. Both the simulated and measured results validate the proposed design.

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来源期刊

2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE)

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