MIMO antennas with U-shaped ground and three protrued strips for WLAN applications

2015 International Workshop on Antenna Technology (iWAT) Pub Date : 2015-03-04 DOI:10.1109/IWAT.2015.7365360

Wen‐Shan Chen, Chun-Sheng Lin, Hung-Ming Liu

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引用次数: 2

Abstract

This paper proposes a monopole type MIMO antenna at WLAN band for dongle application. The MIMO antenna consists of two identical monopole antennas on both ends of an FR4 substrate and operates a frequency band at 2.45 GHz. The antenna is fabricated on an FR4 substrate of permittivity of 4.4, thickness of 1.6 mm, and loss tangent of 0.0245. The isolation mechanism is by cutting U-slot and introducing three isolation elements, which are extended from the ground plane; one is located on the center part of the antenna portion and two strips are located symmetrically at the edges of the U-shaped ground. The overall dimensions (25 × 50 mm2) of the proposed MIMO antenna including an antenna portion (14 × 25 mm2) and a system ground (25 × 36 mm2). The prototype is constructed and investigated. Form the design results, the measured S21 within WLAN 2.4GHz band is below -15 dB; the radiation patterns are with an omni-directional characteristic. In addition, the antenna with the simple structure and good performances is suitable for applying in WLAN system of small size.

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MIMO天线，u形接地和三条突出的条带，用于WLAN应用

本文提出了一种适用于无线局域网加密狗的单极型MIMO天线。MIMO天线由位于FR4基板两端的两个相同的单极天线组成，工作频率为2.45 GHz。天线制作在介电常数为4.4、厚度为1.6 mm、损耗正切为0.0245的FR4衬底上。隔离机构是通过切割u型槽并引入三个隔离元件，隔离元件从接地面延伸出来;其中一条位于天线部分的中心部分，两条条带对称地位于u形地的边缘。MIMO天线的总体尺寸(25 × 50 mm2)，包括天线部分(14 × 25 mm2)和系统接地(25 × 36 mm2)。对样机进行了构建和研究。从设计结果来看，WLAN 2.4GHz频段内实测的S21低于-15 dB;辐射模式具有全向特征。此外，该天线结构简单，性能好，适合应用于小尺寸的无线局域网系统。

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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2015 International Workshop on Antenna Technology (iWAT)

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