一种结构紧凑的螺旋加载等角螺旋天线

2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2018-12-01 DOI:10.1109/ISAPE.2018.8634203

Sen Wang, Hao Li, Yunpeng Zhang, Jiawei Long, E. Li

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引用次数: 0

摘要

提出了一种基于平面螺旋和纵向螺旋复合结构的宽带圆极化天线。与单螺旋天线或螺旋天线相比，该天线通过引入两个纵向螺旋臂与平面螺旋臂的末端连接，在低频时具有更好的性能。结果表明，在不增加天线尺寸的情况下，天线的回波损耗、轴向比(AR)和增益都得到了提高。该天线的工作频率为2至18 GHz，其物理尺寸为$\boldsymbol{\varphi} 50\乘以45\ \mathbf{mm}^{3}$。实验结果表明，该天线的增噪小于2.5 dB，回波损耗小于- 15 dB，增益大于0.5 dBi。

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A Helix-loaded Equiangular Spiral Antenna with Compact Structure

A broadband circular polarization antenna based on the composite structure of planar spiral and longitudinal helix is presented. Compared to single spiral antenna or helix antenna, proposed antenna has a better performance at low frequency by introducing two longitudinal helix arms connecting with the terminal of the planar spiral arms. As a result, the return loss, axial ratio (AR) and gain are both improved without increasing the antenna size. The antenna is designed to operate from 2 to 18 GHz and has a physical dimension of $\boldsymbol{\varphi} 50\times 45\ \mathbf{mm}^{3}$. A prototype was fabricated and tested, the results show that the proposed antenna can provide an AR of less than 2.5 dB, a return loss of less than −15 dB and a gain of greater than 0.5 dBi.

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来源期刊

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

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