Integration of a Low-Profile, Long-Term Evolution/Wireless Wide Area Network Monopole Antenna into the Metal Frame of Tablet Computers

Chen, Shu‐Chuan; Huang, Chih-Chia; Cai, Wun-Siang

doi:10.1109/tap.2017.2700844

Cited by 26 publications

(24 citation statements)

References 25 publications

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“…1. Although, tablet antenna [21], [22] and mobile phone antenna [23][24][25] usually use |S 11 | < -6 dB as a criterion, their electrical size is still larger than the proposed antenna due to having a large ground structure. While both mobile antenna in [26] and standalone antenna in [27] use |S 11 | < -10 dB as a criterion, the antenna in [26] has a significantly larger size and the antenna in [27] has a very low bandwidth.…”

Section: Resultsmentioning

confidence: 99%

Wideband Dual-Arm Capacitively Coupled Patch Antenna for Tablet/Laptop Applications

Niyamanon¹,

Phongcharoenpanich²,

Janpangngern³

2019

RADIOENGINEERING

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The capacitively coupled microstrip antenna for 4G and Wi-Fi applications is presented. The antenna has a compact size which can easily be installed into many types of wireless communication device. The antenna is designed on FR4 substrate with a total dimension of 70 mm × 9 mm × 0.8 mm. The structure of the antenna consists of two main parts. The T-shape feeding patch located between two radiating strips with the ground strip being placed behind them. The surface current distribution and parametric study was analyzed to determine the suitable parameters. Furthermore, the antenna prototype was fabricated and tested. The operating frequency range of the proposed antenna is between 1.7 GHz and 2.5 GHz for the |S 11 | of less than -10 dB. The antenna provides a linear polarization in a single beam direction covering approximately one quadrant of the free space with a maximum gain of higher than 1.47 dBi on the entire frequency band.

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Section: Resultsmentioning

confidence: 99%

Wideband Dual-Arm Capacitively Coupled Patch Antenna for Tablet/Laptop Applications

Niyamanon¹,

Phongcharoenpanich²,

Janpangngern³

2019

RADIOENGINEERING

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“…By using a monopole structure and a match circuit (MC), the proposed antennas in References and can cover eight bands (including the LTE700 band and the above seven bands), and their ground clearances are 10 and 7 mm, respectively. The antenna in Reference uses the coupled feeding method to cover the above eight bands with the ground clearance of 8 mm.…”

Section: Introductionmentioning

confidence: 99%

“…1,2 There are many research articles about antennas for modern mobile phones. [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] The antennas in References 3-7 are single antenna elements for mobile phones with MFs. The antennas in References 8-23 have two or more antenna elements.…”

mentioning

confidence: 99%

Dual antenna system for metal frame mobile phone applications

Huang

Wang

2019

Int J RF Microw Comput Aided Eng

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A dual antenna system with 77 mm × 10 mm × 7.5 mm for metal frame (MF) LTE/GPS mobile phones is proposed and studied. The antenna proposed in this study comprises two antenna elements (Ant 1 and Ant 2) and a decoupling line. Ant 1 as the main antenna that covers the lower band (698‐960 MHz), the GPS band, and the higher band (1710‐2690 MHz) consisting of a ground branch, a coupled line, and a tuning line. Ant 2 as the auxiliary antenna that covers the higher band consisting of a monopole branch and a match circuit. Ant 1 and Ant 2 form a two‐element MIMO antenna covering the higher band. The advantages of the proposed antenna are that the main antenna (Ant 1) covers the GPS band and all of the 2G/3G/4G bands, and the two‐element MIMO antenna covering the higher band, which consists of Ant 1 and Ant 2 located at the same side of a mobile phone with an MF, is obtained. A prototype is manufactured and tested. For Ant 1, the measured working bands (under −6 dB condition) are 685 to 965 MHz and 1480 to 2800 MHz, and the LTE700, GSM850, GSM900, GPS, GSM1800, GSM1900, UMTS, LTE2300, and LTE2500 bands are covered. For Ant 2, the measured working band (under −6 dB condition) is 1640 to 2720 MHz, and the GSM1800, GSM1900, UMTS, LTE2300, and LTE2500 bands are covered. The measured isolations between Ant 1 and Ant 2 are larger than 12 dB at the working bands. The measured efficiencies, envelope correlation coefficients, and mean effective gains are also presented.

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“…Many multiple-band antennas for mobile phones with small ground clearances have been proposed in the literature [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. There are some useful methods to achieve compact and multiple-band antennas, such as using coupled feeding [1][2][3][8][9][10], lumped elements [4][5][6]11,12], and reconfigurable ways [7,[15][16][17]. The antennas in [1][2][3][4]6,7] can work at eight bands, but the 3.5 GHz band is not covered.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the metal frame environment is not considered by the antennas presented in [1][2][3][4][5]. The antennas in [8][9][10][11][12][13][14][15][16][17] can work at multiple bands for a mobile phone with a metal frame, but the antennas in [8,9,11,[13][14][15][16] cannot work at the LTE700 and 3.5 GHz bands. Although the antennas in [10,12,17] can work at the LTE700 band, they cannot work at the 3.5 GHz band.…”

Section: Introductionmentioning

confidence: 99%

Compact Antenna for 4G/5G Metal Frame Mobile Phone Applications Using a Tuning Line

Huang

Wang

2018

Electronics

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A compact antenna with a 6 mm ground clearance for 4G and 5G metal frame mobile phones is proposed in this paper. The proposed antenna consists of a coupled line, a ground branch, a monopole branch, and a tuning line. The ground branch and the coupled line are used to obtain the lower band (698–960 MHz), the monopole branch is used to improve the match at the lower band and obtain the higher band (1710–2690, 3400–3800 MHz), and the tuning line is used to improve the match at the higher band. The novelty of the proposed antenna is that more modes are excited and work together to obtain multiple working bands, by using the coupled line and the folded branches with the help of the tuning line, and then nine bands are obtained under the conditions of a 6 mm, only, ground clearance and a metal frame environment. A prototype has been fabricated and measured. The measured −6 dB impedance bandwidths are 345 MHz (0.685–1.03 GHz) and 2.16 GHz (1.67–3.83 GHz) at the lower and higher bands, respectively. The LTE700, GSM850, GSM900, DCS, PCS, UMTS, LTE2300, and LTE2500 bands for 2G, 3G, 4G, and the 3.5 GHz band that is possible for 5G are covered. The measured efficiencies and patterns are also presented.

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Integration of a Low-Profile, Long-Term Evolution/Wireless Wide Area Network Monopole Antenna into the Metal Frame of Tablet Computers

Cited by 26 publications

References 25 publications

Wideband Dual-Arm Capacitively Coupled Patch Antenna for Tablet/Laptop Applications

Wideband Dual-Arm Capacitively Coupled Patch Antenna for Tablet/Laptop Applications

Dual antenna system for metal frame mobile phone applications

Compact Antenna for 4G/5G Metal Frame Mobile Phone Applications Using a Tuning Line

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