A Meandered Loop Antenna for Lte/Wwan Operations in a Smart Phone

Chiu, Chien‐Wen; Chang, Chih-Hao; Chi, and Yu-Jen

doi:10.2528/pierc10072503

Cited by 20 publications

(18 citation statements)

References 16 publications

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“…It has a two-sided structure that is composed of a bent driven strip and two coupled strips. Comparing to those designs [1][2][3][4][5][6][7][8][9][10][11][12][13] used in a portable device, the proposed antenna can achieve not only a multiband property but also a more compact size of 65(L) × 11(W)×0.4(H) mm 3 (0.286 cm 3 ). This will make the proposed antenna suitable for integration within a smaller laptop computer device such as ultrabook.…”

Section: Introductionmentioning

confidence: 97%

“…To this end, multiband antenna design to cover the WWAN bands (GSM850/900/1800/1900/UMTS) of 824-896/880-960/1710-1880/1850-1990/1920-2170 MHz and the LTE bands (LTE700/2300/2500) of 698-787/2305-2400/2500-2690 MHz have become a promising technology. Regarding the design condition of a mobile phone, several multiband antennas capable of achieving LTE/WWAN operation have been investigated in [1][2][3][4][5][6]. By utilizing a coupled feed structure and an inductive shorting strip, three planar monopole antennas [1][2][3] could generate a good multiband property for LTE and WWAN applications in a mobile handset.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the use of a meander shape was an effective way to further reduce the antenna's size. Thus three compact designs [4][5][6] could function as an internal antenna for a small handset device.…”

Section: Introductionmentioning

confidence: 99%

“…For a low-profile laptop computer application, a compact inverted-F antenna working with multiple branch strips to create multiband property has been recently proposed in [13]. According to those previous studies shown in [1][2][3][4][5][6][7][8][9][10][11][12][13], a smaller size and multiband operation were two critical design challenges for an internal LTE/WWAN antenna in a portable device.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Planar Monopole Antenna With Two Coupled Strips for Internal Eight-Band Lte/Wwan Laptop Computer Application

Liu¹,

Chiang²,

Yang³

2012

PIER C

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Abstract-In this paper, a compact planar monopole antenna with eight-band LTE/WWAN (LTE700/2300/2500/GSM850/900/1800/ 1900/UMTS) operation for laptop computer application is presented. This design structure comprises a bent driven strip and two coupled strips, which can contribute multiple resonance modes to combine two wide operating frequency bands covering 665-1023 MHz and 1612-2924 MHz. The proposed antenna fed by a 50-Ω coaxial cable occupies a small size of only 65(L) × 11(W) × 0.4(H) mm 3 , so it can be flexibly embedded inside the casing of the laptop computer as an internal antenna. A fabricated prototype of the antenna is tested and analyzed. Experimental results exhibit that nearly omnidirectional coverage and stable gain variation across the desirable LTE/WWAN bands can be obtained with the antenna.

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Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Planar Monopole Antenna With Two Coupled Strips for Internal Eight-Band Lte/Wwan Laptop Computer Application

Liu¹,

Chiang²,

Yang³

2012

PIER C

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“…Planar inverted-F antennas (PIFAs) can also be bent to achieve a small size. Unfortunately, the proposed antennas in [9][10][11][12] have three-dimensional (3-D) structures that require additional height clearance.…”

mentioning

confidence: 99%

Multiband Compact Low Sar Mobile Hand Held Antenna

Abdullah¹,

Sultan²

2014

PIER Letters

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Abstract-With the vast emergence of new mobile applications, multiband operation in a compact size is mandatory for market penetration. In this paper, a new mobile handset antenna suitable for both mobile and wireless LAN services is presented. The antenna operates for most of the mobile applications such as the GSM 900, DCS 1800, PCS 1900, UMTS 2100, and most of the LTE bands, especially the low frequency LTE 700 band at −10 dB. The antenna also supports the WIMAX, WLAN, and the ISM bands. The antenna not only has a compact size, but also supports a low SAR radiation at all the operating frequencies. The antenna consists of two concentric open rings that act as quarter wavelength monopoles. The inner ring radiates at 900 MHz, while the outer ring radiates at 700 MHz. The inner ring works as a monopole radiator as well as a slot radiator fed by another rectangular monopole. The advantage of the slot is that it supports a wide range of modes that by its role open the radiation band from 1.65 to 3.6 GHz. The antenna meets three challenging parameters: compact size, multiband operation including low frequency bands, and low SAR radiation. Good agreement is noticed between the experimental and simulated results.

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Small‐size triple‐wideband LTE tablet device antenna with a wideband feed structure formed by integrated matching network

Weng

2014

Micro & Optical Tech Letters

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A small‐size tablet device antenna with three wide operating bands of 698–960 MHz (low band), 1710–2690 MHz (middle band), and 3400–3800 MHz (high band) for the long term evolution operation is presented. The antenna occupies a small ground clearance of 10 × 30 mm2 and has a thin thickness of 3 mm in the tablet device such as a tablet computer in this study. The antenna comprises three radiating branches (Branch 1, Branch 2, and Branch 3) and a wideband feed structure formed by the integrated matching network. Branch 1 and 2 are connected through a series chip inductor to control the antenna's first two resonant modes to occur in the desired low band and middle band, and Branch 3 generates a resonant mode in the desired high band. The integrated matching network comprises a shunt chip capacitor, a shunt chip inductor, and a series chip capacitor to cause dual‐resonance of the antenna's three resonant modes contributed by the three branches, thereby greatly enhancing the low‐band, middle‐band, and high‐band bandwidths to cover the desired operating bands of 698–960, 1710–2690, and 3400–3800 MHz. Details of the proposed antenna are described. Operating principle of the wideband feed structure formed by the integrated matching circuit is also discussed. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2507–2512, 2014

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A Meandered Loop Antenna for Lte/Wwan Operations in a Smart Phone

Cited by 20 publications

References 16 publications

Planar Monopole Antenna With Two Coupled Strips for Internal Eight-Band Lte/Wwan Laptop Computer Application

Planar Monopole Antenna With Two Coupled Strips for Internal Eight-Band Lte/Wwan Laptop Computer Application

Multiband Compact Low Sar Mobile Hand Held Antenna

Small‐size triple‐wideband LTE tablet device antenna with a wideband feed structure formed by integrated matching network

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