| 宽带高增益圆极化天线 |
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| 引用本文： | 文耀彤,刘能武,张志亚.宽带高增益圆极化天线[J].电子科技,2014,27(5):56-58. |
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| 作者姓名： | 文耀彤 刘能武 张志亚 |
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| 作者单位： | (1.中兴通信股份有限公司 无线产品经营部,陕西 西安 710114;2.西安电子科技大学 电子工程学院,陕西 西安 710071) |
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| 摘 要： | 设计了一种宽带高增益圆极化天线。天线采用双同轴线激励以及威尔金森功分器和90°相位比较器的馈电网络形式实现了天线的宽带圆极化特性。该馈电网络形式能在较宽的频带范围内保持稳定的幅度和相位。通过在蝶形天线外围引入方形环,增加了天线的有效辐射面积,从而显著提高了天线的增益。测试结果显示,该圆极化天线VSWR<1.5的阻抗带宽达到63.6%,3 dB轴比带宽达到66.7%,且在1.1~1.6 GHz频段范围内,右旋圆极化增益＞9.4 dB。
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| 关 键 词： | 天线 圆极化 馈电网络 高增益 |
Wideband Circularly Polarized Antenna with High Gain |
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| WEN Yaotong;LIU Nengwu;ZHANG Zhiya.Wideband Circularly Polarized Antenna with High Gain[J].Electronic Science and Technology,2014,27(5):56-58. |
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| Authors: | WEN Yaotong;LIU Nengwu;ZHANG Zhiya |
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| Affiliation: | (1.Wireless Product Management Department,ZTE,Xi'an 710114,China;2.School of Electronic Engineering,Xidian University,Xi'an 710000,China) |
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| Abstract: | A wideband circular polarization antenna with high gain is designed. The antenna is excited by two coaxial baluns, and the feed network consists of a Wilkinson power divider and a 90° phase difference comparator, which can provide equal amplitude but in phase quadrature in the wideband frequency and improve the impedance bandwidth and AR bandwidth. By adding a rectangular ring around the bowtie dipoles, the effective radiation area is enhanced, and thus the gain of the antenna is improved. The measured results show that the proposed antenna can achieve a measured impedance bandwidth of 63.6% for VSWR ≤ 1.5 and a 3-dB axial ratio bandwidth of 66. 7%. The antenna has a stable peak circularly polarized gain better than 9. 4 dBi ranging from 1.1 GHz to 1.6 GHz. |
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| Keywords: | antenna circular polarization feed network high gain |
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