简易双馈双圆极化高隔离天线

IF 1.6 3区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of electromagnetic engineering and science Pub Date : 2023-03-31 DOI:10.26866/jees.2023.2.r.155

S. Choi, Youngkyu Sung

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引用次数: 0

摘要

提出了一种具有圆极化分集和高隔离度的双馈天线系统。该天线由两个弯曲单极天线和一个等腰三角形的局部地平面组成。为了简单地设计具有双馈双CP特性的天线，在单天线的基础上优化CP带宽(BW)。该天线在结构上与传统天线有三方面的不同。通过弯曲天线形状和移动天线位置来实现结构不对称，从而获得良好的CP特性。将送料结构由直线式改为曲径式。因此，单单极天线的CP BW为36%。然后，通过在单层上实现两个单极天线，介绍了具有双cp特性的天线系统。在该结构中，谐振频率由天线几何参数控制，S21处的零频率由两根天线之间的距离控制。测量结果表明，该天线的CP BW为40.6% (1.51 ~ 2.28 GHz)。在工作体重范围内，测量的隔离度低于-20 dB。

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Simple Dual-Feed Dual-Circular Polarization Antenna with High Isolation

A dual-feed antenna system with circular polarization (CP) diversity and high isolation is proposed in this paper. The proposed antenna consists of two bent monopole antennas and an isosceles triangular partial GND on a single layer. To simply design an antenna with dual-feed dual-CP characteristics, CP bandwidth (BW) is optimized based on a single antenna. The proposed antenna is structurally different from conventional antennas in three ways. Structural asymmetry is realized by bending the shape of the antenna and moving the position, and thus good CP characteristics are obtained. The feeding structure is changed from a linear type to a meander type. As a result, a single monopole antenna has a CP BW of 36%. Next, an antenna system with dual-CP characteristics is introduced by implementing two monopole antennas on a single layer. In this structure, the resonant frequency is controlled by the antenna geometrical parameters, and the null frequency at S21 is controlled by the distance between the two antennas. The measured results show that the CP BW of the proposed antenna is 40.6% (1.51–2.28 GHz). The measured isolation is below -20 dB within the operating BW.

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来源期刊

Journal of electromagnetic engineering and science ENGINEERING, ELECTRICAL & ELECTRONIC-

CiteScore

2.90

自引率

17.40%

发文量

审稿时长

10 weeks

期刊介绍： The Journal of Electromagnetic Engineering and Science (JEES) is an official English-language journal of the Korean Institute of Electromagnetic and Science (KIEES). This journal was launched in 2001 and has been published quarterly since 2003. It is currently registered with the National Research Foundation of Korea and also indexed in Scopus, CrossRef and EBSCO, DOI/Crossref, Google Scholar and Web of Science Core Collection as Emerging Sources Citation Index(ESCI) Journal. The objective of JEES is to publish academic as well as industrial research results and discoveries in electromagnetic engineering and science. The particular scope of the journal includes electromagnetic field theory and its applications: High frequency components, circuits, and systems, Antennas, smart phones, and radars, Electromagnetic wave environments, Relevant industrial developments.