A Dual-Band Dual-Antenna System with Common-Metal Rim for Smartphone Applications

A Dual-Band Dual-Antenna System with Common-Metal Rim for Smartphone Applications

A dual-antenna system operating at WIFI and GPS bands is proposed for common-metal rimmed smartphones applications. This dual-antenna system, which is horizontally placed on a ground plane of 4.5 &#215; 75 mm<sup>2</sup>, consists of two folded inverted-F antennas (IFAs) sharing the...

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Bibliographic Details
Main Authors: Ziqiang Xu, Chenguang Ding, Qiangqiang Zhou, Yangtao Sun, Si Huang
Format: Article
Language:English
Published: MDPI AG 2019-03-01
Series:Electronics
Subjects:
dual-antenna system
WIFI and GPS bands
common-metal rim
matching network
Online Access:https://www.mdpi.com/2079-9292/8/3/348
id doaj-a3d1d2cfa7174121acc49feede96734a
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spelling doaj-a3d1d2cfa7174121acc49feede96734a2020-11-24T20:41:56ZengMDPI AGElectronics2079-92922019-03-018334810.3390/electronics8030348electronics8030348A Dual-Band Dual-Antenna System with Common-Metal Rim for Smartphone ApplicationsZiqiang Xu0Chenguang Ding1Qiangqiang Zhou2Yangtao Sun3Si Huang4School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, ChinaSchool of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, ChinaSchool of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, ChinaSchool of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, ChinaDepartment of Electrical Engineering, University of Arkansas, Fayetteville, AR 72701, USAA dual-antenna system operating at WIFI and GPS bands is proposed for common-metal rimmed smartphones applications. This dual-antenna system, which is horizontally placed on a ground plane of 4.5 &#215; 75 mm<sup>2</sup>, consists of two folded inverted-F antennas (IFAs) sharing the same metal rim. Each IFA contains part of the metal radiating arm, and both IFAs own approximately one-quarter free space wavelengths at 2.44 GHz. A matching network is embedded in the feeding line of the left IFA to provide a resonant frequency at 1.575 GHz. By adjusting the positions of the shorting branch and feeding line, good impedance matching is obtained. Two gaps in the metal frame and a center shorting branch between two IFAs are adopted to improve the isolation. The isolations of better than 22 dB and 19 dB in GPS and WIFI bands are attained, respectively. The proposed antenna is fabricated, and the measured results regarding S-parameters, radiation efficiency, gain, as well as diversity performances are presented.https://www.mdpi.com/2079-9292/8/3/348dual-antenna systemWIFI and GPS bandscommon-metal rimmatching network
collection DOAJ
language English
format Article
sources DOAJ
author Ziqiang Xu
Chenguang Ding
Qiangqiang Zhou
Yangtao Sun
Si Huang
spellingShingle Ziqiang Xu
Chenguang Ding
Qiangqiang Zhou
Yangtao Sun
Si Huang
A Dual-Band Dual-Antenna System with Common-Metal Rim for Smartphone Applications
Electronics
dual-antenna system
WIFI and GPS bands
common-metal rim
matching network
author_facet Ziqiang Xu
Chenguang Ding
Qiangqiang Zhou
Yangtao Sun
Si Huang
author_sort Ziqiang Xu
title A Dual-Band Dual-Antenna System with Common-Metal Rim for Smartphone Applications
title_short A Dual-Band Dual-Antenna System with Common-Metal Rim for Smartphone Applications
title_full A Dual-Band Dual-Antenna System with Common-Metal Rim for Smartphone Applications
title_fullStr A Dual-Band Dual-Antenna System with Common-Metal Rim for Smartphone Applications
title_full_unstemmed A Dual-Band Dual-Antenna System with Common-Metal Rim for Smartphone Applications
title_sort dual-band dual-antenna system with common-metal rim for smartphone applications
publisher MDPI AG
series Electronics
issn 2079-9292
publishDate 2019-03-01
description A dual-antenna system operating at WIFI and GPS bands is proposed for common-metal rimmed smartphones applications. This dual-antenna system, which is horizontally placed on a ground plane of 4.5 &#215; 75 mm<sup>2</sup>, consists of two folded inverted-F antennas (IFAs) sharing the same metal rim. Each IFA contains part of the metal radiating arm, and both IFAs own approximately one-quarter free space wavelengths at 2.44 GHz. A matching network is embedded in the feeding line of the left IFA to provide a resonant frequency at 1.575 GHz. By adjusting the positions of the shorting branch and feeding line, good impedance matching is obtained. Two gaps in the metal frame and a center shorting branch between two IFAs are adopted to improve the isolation. The isolations of better than 22 dB and 19 dB in GPS and WIFI bands are attained, respectively. The proposed antenna is fabricated, and the measured results regarding S-parameters, radiation efficiency, gain, as well as diversity performances are presented.
topic dual-antenna system
WIFI and GPS bands
common-metal rim
matching network
url https://www.mdpi.com/2079-9292/8/3/348
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