A Low-Profile High Isolation Wideband Dual-Polarized Antenna for Sub-1 GHz Base Stations

IF 1 Q3 MULTIDISCIPLINARY SCIENCES

gazi university journal of science Pub Date : 2023-07-24 DOI:10.35378/gujs.1279556

E. A. Miran, M. Çiydem

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引用次数: 0

Abstract

In this paper, we present a low profile, wideband dual-polarized suspended patch antenna for LTE700/LTE850/CDMA850/GSM900 applications with high isolation. The proposed antenna element consists of two suspended patches excited orthogonally through modified cross-slot. It is theoretically and experimentally verified that this modification significantly widens −15 dB impedance bandwitdh and improves port isolation between polarizations. Experiments reveal in parallel with conducted simulations that the antenna is capable of exhibiting 37% −15 dB impedance bandwidth (688-1000 MHz) and more than 35 dB port isolation over operating frequency band. In principle planes, the antenna provides symmetric broadside radiation patterns at boresight with half-power beamwidths of 55.32º-65.61º and 61.79º-66.84º. Gain of the antenna varies within 7.3-8.4 dBi range at measured frequencies. The size of the antenna is 380 × 380 × 43.6 mm3 which makes it very suitable to integrate into commercially deployed base stations. Geometry, feeding mechanism, parametric studies and experimental results of the proposed antenna are presented throughout the paper.

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用于 1 千兆赫以下基站的低矮型高隔离度宽带双极化天线

本文提出了一种用于 LTE700/LTE850/CDMA850/GSM900 应用的低剖面、宽带双极化悬浮贴片天线，具有很高的隔离度。拟议的天线元件由两个悬浮贴片组成，通过改进的十字槽正交激励。经理论和实验验证，这种改进大大拓宽了 -15 dB 阻抗带宽，并提高了极化间的端口隔离度。实验与模拟同时显示，该天线能够在工作频段内显示 37% -15 dB 阻抗带宽（688-1000 MHz）和超过 35 dB 的端口隔离度。在原理平面上，该天线在内径处提供对称的宽边辐射模式，半功率波束宽度分别为 55.32º-65.61º 和 61.79º-66.84º。在测量频率下，天线的增益在 7.3-8.4 dBi 范围内变化。天线尺寸为 380 × 380 × 43.6 mm3，非常适合集成到商用基站中。本文通篇介绍了拟议天线的几何形状、馈电机制、参数研究和实验结果。

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

gazi university journal of science MULTIDISCIPLINARY SCIENCES-

CiteScore

1.60

自引率

11.10%

发文量

期刊介绍： The scope of the “Gazi University Journal of Science” comprises such as original research on all aspects of basic science, engineering and technology. Original research results, scientific reviews and short communication notes in various fields of science and technology are considered for publication. The publication language of the journal is English. Manuscripts previously published in another journal are not accepted. Manuscripts with a suitable balance of practice and theory are preferred. A review article is expected to give in-depth information and satisfying evaluation of a specific scientific or technologic subject, supported with an extensive list of sources. Short communication notes prepared by researchers who would like to share the first outcomes of their on-going, original research work are welcome.