Small-Size Reconfigurable Loop Antenna for Mobile Phone Applications

Wang, Hao; Wang, Yibo; Wu, Jianlan; Chen, Peng; Wu, Zheqiang; Sim, Chow‐Yen‐Desmond; Yang, Guangli

doi:10.1109/access.2016.2593794

Cited by 37 publications

(3 citation statements)

References 13 publications

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“…Several handset antennas for mobile communication have been described in [1][2][3][4][5][6][7][8][9][10], covering bandwidths of 824-960 MHz and 1710-2690 MHz, and with desirable radiation efficiency. The antenna structure in [1] is a combination of a monopole antenna and a coupled ground line fabricated on an FR-4 substrate, covering the desired bandwidth with 3.82 dBi gain.…”

Section: Introductionmentioning

confidence: 99%

“…The antenna structure in [1] is a combination of a monopole antenna and a coupled ground line fabricated on an FR-4 substrate, covering the desired bandwidth with 3.82 dBi gain. A small-size reconfigurable loop antenna for mobile phone applications with a compact volume of 55 × 5 × 3 mm 3 is proposed in [2]. To cover more operating bands with such a compact antenna, the reconfigurable technique is applied by inserting a radio frequency (RF) switch at the end of the proposed antenna to improve the bandwidth at the lower band.…”

Section: Introductionmentioning

confidence: 99%

“…Each branch operates as an IFA and has a resonant length of a quarter-wavelength at the fundamental frequency. 2…”

Section: Introductionmentioning

confidence: 99%

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Design of a T-Shaped Antenna Based on Characteristic Mode Manipulation for Metal-Framed Handset Application

et al. 2018

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Recently, metal-framed handset antennas have aroused much attention due to their fantastic appearance and superior robustness. In this paper, a T-shaped antenna suitable for integration with a USB connector is proposed for metal-framed handset application by utilizing the theory of characteristic modes (TCM). Five eigenmodes, one for the lower band and four for the higher band, were merged by a T-shaped metal frame, a feed point, and two shorting pins, as well as three radio frequency (RF) switches so as to broaden the antenna's operating bandwidth. A prototype was fabricated in order to verify the design concept. Experimental results showed that the proposed antenna was able to cover bandwidths of 0.824-0.960 GHz (GSM band) and 1.710-2.690 GHz (DCS, PCS, UMTS, and LTE bands) with an acceptable radiation efficiency of up to 50% and satisfactory radiation patterns.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Design of a T-Shaped Antenna Based on Characteristic Mode Manipulation for Metal-Framed Handset Application

et al. 2018

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Frequency Reconfigurable Antennas

Latif¹,

Sharma²

2021

Multifunctional Antennas and Arrays for Wireless Communication Systems

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A frequency reconfigurable antenna for multiband mobile handset applications

Zhang

Tian

Zhan

et al. 2017

Int J RF Microw Comput Aided Eng

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A frequency‐reconfigurable antenna is presented for multiband (GSM850/900/GLONASS1616/DCS1800/PCS 1900/UMTS/LTE2300/2500/WLAN) mobile handset applications. It mainly consists of radiating elements with two PIN diodes. By switching the ON/OFF states of the PIN diodes, the proposed structure can operate in three states: OFF–ON, ON–OFF, and ON–ON. When PIN diodes are in the OFF–ON states, the proposed antenna can cover the GSM850/900, PCS1900, and UMTS2100 bands by operating in Invented‐F antenna (IFA) mode. When PIN diodes are in the ON–OFF states, the antenna can cover the LTE2300/2500 and WLAN2400 bands in monopole mode. Moreover, when PIN diodes are switched to the ON–ON states, the designed antenna works in loop mode and its resonant frequencies include the GLONASS1616, DCS1800/1900, and LTE2500 bands. With the reconfigurable technique, the proposed antenna achieves a compact size of 15 × 28.5 mm2 with high efficiency from 34% to 84.86% in the total frequency range.

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Small-Size Reconfigurable Loop Antenna for Mobile Phone Applications

Cited by 37 publications

References 13 publications

Design of a T-Shaped Antenna Based on Characteristic Mode Manipulation for Metal-Framed Handset Application

Design of a T-Shaped Antenna Based on Characteristic Mode Manipulation for Metal-Framed Handset Application

Frequency Reconfigurable Antennas

A frequency reconfigurable antenna for multiband mobile handset applications

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