Magnetic-electric dipole circularly polarized antenna with unidirectional radiation pattern with improved characteristics

IF 1.4 4区计算机科学 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Microwave and Wireless Technologies Pub Date : 2023-12-11 DOI:10.1017/s1759078723001393

Seied Ali Banihashem, Pejman Mohammadi, Yashar Zehforoosh

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引用次数: 0

Abstract

In this paper, a compact unidirectional antenna consisting of a planar electric dipole and a shortened connecting element is introduced. This antenna is excited by a Γ-shaped feeding line. A wide impedance bandwidth in the frequency range of 1.3–3.3 GHz is observed in the output performance. Sufficient main lobe and low level back lobe have been introduced as other characteristics of the structure, based on radiation patterns. The antenna design process is evaluated step-by-step and using parametric study based on the antenna geometry. One of the main features of the desired antenna is the realization of circular polarization in a high percentage of the operational bandwidth 1.5–3.3 GHz. The radiation patterns of the orthogonal planes E-field and H-field along with the left-handed and right-handed circular polarization patterns for the desired antenna have been extracted and analyzed. A three-dimensional structure in the form of stacked stepped disks (SSD) is introduced to increase overall performance of antenna. There is an acceptable similarity between the E-field and H-field page patterns, which shows the accuracy of the design process. On the other hand, for studying the circular polarization, left-handed and right-handed patterns based on the main beam direction and orthogonal polarization level have acceptable performance. The maximum overall gain of the antenna in the designed frequency band is near to 13 dB.

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具有改进特性的单向辐射模式的磁电偶极子圆极化天线

本文介绍了一种由平面电偶极子和缩短的连接元件组成的紧凑型单向天线。该天线由Γ形馈电线激励。输出性能在 1.3-3.3 GHz 频率范围内具有较宽的阻抗带宽。根据辐射模式，还引入了足够的主叶和低电平后叶作为该结构的其他特征。根据天线的几何形状，利用参数研究对天线设计过程进行了逐步评估。理想天线的主要特征之一是在 1.5-3.3 千兆赫的高比例工作带宽内实现圆极化。我们提取并分析了正交平面 E 场和 H 场的辐射模式，以及理想天线的左旋和右旋圆极化模式。为了提高天线的整体性能，引入了堆叠阶梯盘（SSD）形式的三维结构。E 场和 H 场页面图案之间的相似度可以接受，这表明了设计过程的准确性。另一方面，在研究圆极化时，基于主波束方向和正交极化水平的左手和右手图案具有可接受的性能。天线在设计频段内的最大整体增益接近 13 dB。

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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来源期刊

International Journal of Microwave and Wireless Technologies ENGINEERING, ELECTRICAL & ELECTRONIC-TELECOMMUNICATIONS

CiteScore

3.50

自引率

7.10%

发文量

130

审稿时长

6-12 weeks

期刊介绍： The prime objective of the International Journal of Microwave and Wireless Technologies is to enhance the communication between microwave engineers throughout the world. It is therefore interdisciplinary and application oriented, providing a platform for the microwave industry. Coverage includes: applied electromagnetic field theory (antennas, transmission lines and waveguides), components (passive structures and semiconductor device technologies), analogue and mixed-signal circuits, systems, optical-microwave interactions, electromagnetic compatibility, industrial applications, biological effects and medical applications.