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首页> 外文期刊>Microwaves, Antennas & Propagation, IET >Compact omni-directional circularly polarised antenna utilising bended dipoles and integrated baluns
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Compact omni-directional circularly polarised antenna utilising bended dipoles and integrated baluns

机译：紧凑的全向圆极化天线，采用弯曲偶极子和集成巴伦

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摘要

A circular-polarised antenna with omni-directional radiation is presented in this study. The proposed antenna consists of four bended dipoles, excited simultaneously by integrated baluns. The and components, generated by the horizontal and vertical parts of the bended dipoles, are shown to have a phase difference of 90°. The operating principle of achieving circular polarisation (CP) with bended dipoles are described and derived, according to which guidelines for designing CP antennas are provided. Following the guidelines, a prototype of the compact omni-directional CP antenna is fabricated, with a size of 0.27 × 0.27 × 0.13, a fractional bandwidth of 9% at 2.43 GHz and an average left-handed circular polarisation (LHCP) gain above 0.15 dBic in the operating band.
机译：这项研究提出了具有全向辐射的圆极化天线。拟议的天线由四个弯曲偶极子组成，并由集成的不平衡变压器同时激发。由弯曲偶极子的水平和垂直部分生成的和分量显示为具有90°的相位差。描述并推导了通过弯曲偶极子实现圆极化（CP）的工作原理，并据此提供了设计CP天线的指南。按照指南，制造了紧凑型全向CP天线的原型，尺寸为0.27×0.27×0.13，在2.43 GHz时的分数带宽为9％，平均左旋圆极化（LHCP）增益大于0.15在工作频带中的dBic。

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