Wideband Unidirectional Circularly Polarized Antenna With L-Shaped Radiator Structure

Wideband Unidirectional Circularly Polarized Antenna With L-Shaped Radiator Structure
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L型辐射体结构宽带单向圆极化天线

DOI:
10.1109/lawp.2016.2552228
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发表时间:
2017
影响因子:
4.2
通讯作者:
Xue Quan(薛泉)
Xue Quan(薛泉)
中科院分区:
计算机科学2区
文献类型:
--
作者:
Bisharat Dia'aaldin J.;Liao Shaowei;Xue Quan(薛泉)

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本文介绍了一种结构简单、适用于阵列应用的宽带单向圆极化天线。该天线具有两个弯折,其形成L形辐射器,该L形辐射器在接地平面上与探针连接。由于行波激励在L形截面上产生具有正交相位差的电流,从而实现圆极化。与此同时,距离L形辐射器四分之一波长的接地层产生定向辐射图案。使用两层印刷电路板制作了基于该元件的2 × 2元件阵列原型。天线阵列的测量结果显示,在其−10 dB阻抗带宽内,3 dB轴比带宽为55%(5.2-9.1 GHz),3 dB右手CP增益带宽为49%(5.3-8.8 GHz),峰值增益为12.1 dBic。
This letter presents a wideband unidirectional circularly polarized (CP) antenna of a simple structure that is suitable for array application. The antenna has twofold bends that form an L-shaped radiator connecting with a probe over a ground plane. Circular polarization is achieved due to traveling wave excitation producing currents with quadrature phase difference on the L-shaped sections. Meanwhile, the ground plane, which is a quarter-wavelength away from the L-shaped radiator, produces a directional radiation pattern. A 2 × 2-element array prototype based on the proposed element was fabricated using two layers of printed circuit board. Measured results of the antenna array exhibit a 3-dB axial-ratio bandwidth of 55% (5.2–9.1 GHz) within its −10-dB impedance bandwidth and a 3-dB right-handed CP gain bandwidth of 49% (5.3–8.8 GHz) with a peak gain of 12.1 dBic.
DOI: 10.1109/aps.2001.959415
发表时间: 2001-07
期刊: IEEE Antennas and Propagation Society International Symposium. 2001 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.01CH37229)
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发表时间: 2015-01-01
影响因子: 4.2
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DOI: 10.1109/jrproc.1949.231279
发表时间: 1949-03
期刊: Proceedings of the IRE
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DOI: 10.1049/ij-moa:19790002
发表时间: 1979
期刊: Iee Journal on Microwaves, Optics and Acoustics
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