Mobile antenna performance improvement by ground mode tuning using a closed loop

Sangmoon Yoo; Longyue Qu; Joonchul Kim; Hyeongdong Kim

doi:10.1049/iet-map.2016.0638

Mobile antenna performance improvement by ground mode tuning using a closed loop

Sangmoon Yoo
, Longyue Qu
, Joonchul Kim
, Hyeongdong Kim^*

^*Corresponding author for this work

Hanyang University

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

An antenna with a modified ground plane is proposed for modern mobile devices in the wireless communications. The proposed antenna design comprises a planar inverted-F antenna with a feeding capacitor (C_F) at the top side of the ground plane, and an additional closed loop with lumped inductors (L₁ and L₂) at the end of the ground plane. The closed loop is connected to the small ground plane for ground mode tuning so that the ground mode resonant frequency is equal to the operating frequency. In the simulation, the -10 dB bandwidth is 140 MHz (from 2.39 to 2.53 GHz) without the closed loop, and is 320 MHz (from 2.34 to 2.66 GHz) with the proposed closed loop. The measured efficiency is 61% on average from 2.3 to 2.6 GHz for the proposed antenna, and is 36% for the reference antenna. The ground mode resonance can be easily tuned, and the proposed technique is a versatile approach for antenna performance improvement.

Original language	English
Pages (from-to)	1121-1126
Number of pages	6
Journal	IET Microwaves, Antennas and Propagation
Volume	11
Issue number	8
DOIs	https://doi.org/10.1049/iet-map.2016.0638
State	Published - 22 Jun 2017
Externally published	Yes

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10.1049/iet-map.2016.0638

Cite this

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title = "Mobile antenna performance improvement by ground mode tuning using a closed loop",

abstract = "An antenna with a modified ground plane is proposed for modern mobile devices in the wireless communications. The proposed antenna design comprises a planar inverted-F antenna with a feeding capacitor (CF) at the top side of the ground plane, and an additional closed loop with lumped inductors (L1 and L2) at the end of the ground plane. The closed loop is connected to the small ground plane for ground mode tuning so that the ground mode resonant frequency is equal to the operating frequency. In the simulation, the -10 dB bandwidth is 140 MHz (from 2.39 to 2.53 GHz) without the closed loop, and is 320 MHz (from 2.34 to 2.66 GHz) with the proposed closed loop. The measured efficiency is 61\% on average from 2.3 to 2.6 GHz for the proposed antenna, and is 36\% for the reference antenna. The ground mode resonance can be easily tuned, and the proposed technique is a versatile approach for antenna performance improvement.",

author = "Sangmoon Yoo and Longyue Qu and Joonchul Kim and Hyeongdong Kim",

note = "Publisher Copyright: {\textcopyright} The Institution of Engineering and Technology.",

year = "2017",

month = jun,

day = "22",

doi = "10.1049/iet-map.2016.0638",

language = "英语",

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pages = "1121--1126",

journal = "IET Microwaves, Antennas and Propagation",

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TY - JOUR

T1 - Mobile antenna performance improvement by ground mode tuning using a closed loop

AU - Yoo, Sangmoon

AU - Qu, Longyue

AU - Kim, Joonchul

AU - Kim, Hyeongdong

PY - 2017/6/22

Y1 - 2017/6/22

N2 - An antenna with a modified ground plane is proposed for modern mobile devices in the wireless communications. The proposed antenna design comprises a planar inverted-F antenna with a feeding capacitor (CF) at the top side of the ground plane, and an additional closed loop with lumped inductors (L1 and L2) at the end of the ground plane. The closed loop is connected to the small ground plane for ground mode tuning so that the ground mode resonant frequency is equal to the operating frequency. In the simulation, the -10 dB bandwidth is 140 MHz (from 2.39 to 2.53 GHz) without the closed loop, and is 320 MHz (from 2.34 to 2.66 GHz) with the proposed closed loop. The measured efficiency is 61% on average from 2.3 to 2.6 GHz for the proposed antenna, and is 36% for the reference antenna. The ground mode resonance can be easily tuned, and the proposed technique is a versatile approach for antenna performance improvement.

AB - An antenna with a modified ground plane is proposed for modern mobile devices in the wireless communications. The proposed antenna design comprises a planar inverted-F antenna with a feeding capacitor (CF) at the top side of the ground plane, and an additional closed loop with lumped inductors (L1 and L2) at the end of the ground plane. The closed loop is connected to the small ground plane for ground mode tuning so that the ground mode resonant frequency is equal to the operating frequency. In the simulation, the -10 dB bandwidth is 140 MHz (from 2.39 to 2.53 GHz) without the closed loop, and is 320 MHz (from 2.34 to 2.66 GHz) with the proposed closed loop. The measured efficiency is 61% on average from 2.3 to 2.6 GHz for the proposed antenna, and is 36% for the reference antenna. The ground mode resonance can be easily tuned, and the proposed technique is a versatile approach for antenna performance improvement.

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M3 - 文章

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JO - IET Microwaves, Antennas and Propagation

JF - IET Microwaves, Antennas and Propagation

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Mobile antenna performance improvement by ground mode tuning using a closed loop

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