Box‐folded four‐element MIMO antenna system for LTE handsets

Yang, Lingsheng; Li, Tao

doi:10.1049/el.2014.3757

Cited by 22 publications

(28 citation statements)

References 4 publications

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“…However, at present most of handsets antennas only covers some of frequency bands mentioned above [2,3,4,5]. In [2,3], printed monopole antennas introduced many parasitic strips and complicated structures, covering only GSM/ UMTS/LTE bands.…”

Section: Introductionmentioning

confidence: 99%

“…In [2,3], printed monopole antennas introduced many parasitic strips and complicated structures, covering only GSM/ UMTS/LTE bands. In [4], although the proposed antenna consists of four box-folded PIFA antennas, the operating band only cover PCS1900/UMTS/LTE2300/ LTE2500, which is far below the requirement in the further 5G communication systems. Recently, a wideband 3D folded dipole antenna with feed line was folded outside of the ground plane to achieve about 83% fractional bandwidth covering 1.9-4.63 GHz in [6].…”

Section: Introductionmentioning

confidence: 99%

“…The proposed antenna has a compact size of 31:4 Â 12 mm 2 and almost full-band coverage for wireless handset systems, covering GSM850 and the ultra-broadband frequencies from 1.6 to 5.4 GHz, which has much more bandwidth than those in previous handsets antenna literature. Table I compares the performance of the proposed design with other works in previous literature [3,4,6,9,10,11]. The compact size, almost full-band coverage in modern mobile communication, simple uniplanar configuration, easy fabrication and excellent performance (in terms of voltage standing wave ratio (VSWR), isolation, radiation, diversity) makes it suitable for a wide range of handset applications.…”

Section: Introductionmentioning

confidence: 99%

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A compact planar ultra-wideband handset antenna with L-shaped extended ground stubs

Liu

Peng

et al. 2017

IEICE Electron. Express

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In this letter, a compact planar ultra-wideband mobile antenna with L-shaped extended ground stubs is presented. The proposed handset antenna consists of two planar meandered monopole radiating elements, i.e., main antenna and auxiliary antenna respectively, located at the diagonal corners of mobile phone printed circuit broad with standard size of 136 × 68 mm 2 . Each radiating element is composed of two arms and a L-shaped extended ground stub, jointly achieving multiple resonances and ultra-wideband impedance matching with a compact size. The effect of the L-shaped ground stub is investigated in detail. The proposed antenna has a compact size of 31.4 × 12 mm 2 , printed simple structure and full-band coverage (GSM850 and 1.6-5.4 GHz) for wireless handsets systems, including GSM850, DCS1800, PCS1900, UMTS, LTE, WiMAX, and WLAN in 4G and 5G communication systems. The optimized antenna prototype is fabricated and measured. The measured results show that the reflection coefficients are less than −6 dB over the operating bands and the mutual coupling between two ports is less than −20 dB. Good agreement is obtained between the simulated and measured results. The results demonstrate that the proposed handset antenna has good characteristics of ultra-wideband, isolation, gain, and radiation pattern, and is a good candidate as a terminal antenna for handsets applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A compact planar ultra-wideband handset antenna with L-shaped extended ground stubs

Liu

Peng

et al. 2017

IEICE Electron. Express

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show abstract

“…In order to solve this problem, multiple-input-multiple-output (MIMO) antenna was introduced [2]. Moreover, the communication quality and channel capacity of MIMO antenna can be improved by increasing the number of transmitter antennas and receiver antennas without extra radiation power and spectrum bandwidth [3]. However, when two or more antenna elements work closely to each other, the mutual coupling between the antenna elements becomes strong that the MIMO antenna cannot reach high isolation and wide operating band without taking any method [4].…”

Section: Introductionmentioning

confidence: 99%

Compact 4-Port Acs-Fed Uwb-Mimo Antenna With Shared Radiators

Zhang¹,

Zhang²,

Tian³

2015

PIER Letters

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Abstract-A compact 4-port asymmetric coplanar strip (ACS)-fed MIMO antenna working in the ultra-wideband (UWB) frequency band with two shared radiators is presented in this paper. The proposed antenna is composed of two radiators, and each radiator is shared by two antenna elements in order to achieve a very compact size of 36 × 36 mm 2 . By etching two I-shaped slots in the radiators and attaching a rectangular patch on the back, the operating band width is broadened, and the isolation between any two antenna elements is enhanced. The stub of the ground also has great effect on the return loss and isolation. The working frequency band of the MIMO antenna covers 3.1-10.6 GHz with isolation over 15 dB between any two antenna elements. Furthermore, the proposed antenna with a simple feeding structure and compact size makes it possible to be used in portable devices.

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“…In [11] ten antenna elements are used with ECC (< 0.1) to operate only in the frequency range (3.4-3.8 GHz). In [12] four antenna elements are used with box-folded planar inverted-F antenna to operate only in the frequency range (1.85-2.69 GHz) and reasonable ECC (< 0.03).…”

Section: Introductionmentioning

confidence: 99%