Integrated Inverted-F and Open-Slot Antennas in the Metal-Framed Smartphone for &lt;inline-formula&gt; 
                     &lt;tex-math notation="LaTeX"&gt;$2\times2$ &lt;/tex-math&gt;
                  &lt;/inline-formula&gt; LTE LB and &lt;inline-formula&gt; 
                     &lt;tex-math notation="LaTeX"&gt;$4\times4$ &lt;/tex-math&gt;
                  &lt;/inline-formula&gt; LTE M/HB MIMO Operations

Barani, Imee Ristika Rahmi; Wong, Kin‐Lu

doi:10.1109/tap.2018.2854191

Cited by 74 publications

(18 citation statements)

References 14 publications

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“…Multiple antenna systems with multiple elements have been investigated in many literatures [6][7][8][9][10][11][12][13][14][15][16][17] . In Ref.…”

Section: ×mentioning

confidence: 99%

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Designing Uncorrelated Multiple Antennas with Round Patterns Using Handset Metal Frames

Diao

et al. 2022

Chinese J of Electronics

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Multiple antennas with low correlations are highly in demand in the mobile handsets for higher data rate. At the same time, the total pattern provided by the antennas should be as round as possible for reliable links. In this paper, by analysing the characteristic modes of the mobile chassis loaded by ultra‐thin metal frames, a four‐antenna system with a round total pattern is designed at 2.4 GHz. The gain variations are only 3.4 dB and 3.6 dB on two dominant planes. The isolations between antennas are above 15 dB, and the correlations are below 0.01, with intact ground plane and small ground clearance of 2 mm maintained. Afterwards, an eight‐port antenna system is designed by taking advantage of the ground clearance and exciting modes with different phases. Low correlations of below 0.07 are obtained. The antenna system is fabricated, with the measured results agreeing well with the simulated ones.

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“…Multiple antenna systems with multiple elements have been investigated in many literatures [6][7][8][9][10][11][12][13][14][15][16][17] . In Ref.…”

Section: ×mentioning

confidence: 99%

“…In Ref. [7], six antennas placed on the short edges of the metal‐framed smartphone are presented using slots and inverted‐F antennas (IFAs), yet with a relatively large ground clearance of 8 mm. Twelve antennas based on slots have been constructed on the chassis of the handset in Ref.…”

Section: Introductionmentioning

confidence: 99%

Designing Uncorrelated Multiple Antennas with Round Patterns Using Handset Metal Frames

Diao

et al. 2022

Chinese J of Electronics

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“…With the increasing demand for the quality of wireless communication, the fifthgeneration (5G) mobile communication technology provides a promising solution to higher transmission rates, shorter latency, more connection density, and larger communication capacity. Recently, many 5G sub-6 GHz Multiple-Input Multiple-Output (MIMO) antennas have been developed for mobile terminals and base stations [1][2][3][4][5]. However, with the limited internal space of mobile phones, it is a challenging task to integrate many antennas with high isolation and low envelope correlation coefficient.…”

Section: Introductionmentioning

confidence: 99%

“…To minimize the unwanted mutual coupling, various isolation techniques have been reported in recent years [3][4][5][6][7][8][9][10][11][12][13][14]. The rectangle slots of the defected ground plane and two rectangular microstrip lines are employed to decrease the mutual coupling in [3]. In [4], the vertical patch is used to offset the coupling between the antenna and nearby components.…”

Section: Introductionmentioning

confidence: 99%

A Quad-Port Dual-Band MIMO Antenna Array for 5G Smartphone Applications

et al. 2021

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A quad-port antenna array operating in 3.5 GHz band (3.4–3.6 GHz) and 5 GHz band (4.8–5 GHz) for fifth-generation (5G) smartphone applications is presented in this paper. The single antenna element consists of an L-shaped strip, a parasitic rectangle strip, and a modified Z-shaped strip. To reserve space for 2G/3G/4G antennas, the quad-port antenna array is printed along the two long frames of the smartphone. The evolution design and the analysis of the optimal parameters of a single antenna element are derived to investigate the principle of the antenna. The prototype of the presented antenna is tested and the measured results agree well with the simulation. The measured total efficiency is better than 70% and the isolation is larger than 16.5 dB.

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“…Although many problems are faced in design process of MIMO antennas, their popularity is increasing every day as many interesting applications of them are revealed. Among them, Long Term Evolution (LTE) applications [8][9][10], ultra wide band applications [11], [12], C and X band applications [13], and WiMAX applications [14] could be named. This paper aims at designing and discussing the performance of a novel MIMO antenna with compact size, high isolation, and special application in wireless portable devices.…”

Section: Introductionmentioning

confidence: 99%

Grounded Coplanar Waveguide-fed Compact MIMO Antenna for Wireless Portable Applications

Taghizadeh¹,

Ghobadi²,

Azarm³

et al. 2019

RADIOENGINEERING

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A multi-input multi-output (MIMO) antenna with high isolation capability is proposed in this paper. The proposed MIMO antenna configuration is composed of two monopole antennas, each of them consists of a single rectangular grounded coplanar waveguide (GCPW) feed line, a radiation patch with two arms, two conductive elements on both sides of the feed line, and a simple ground plane on substrate backside. The overall size of the proposed MIMO antenna is 44 × 20 mm 2 on 1.6 mm thick FR4 substrate which is more compact than many of the previously designed structures. The arrangement of two monopole antennas in the form of a MIMO antenna topology yields a dual-band operation in which the first bandwidth is in 3.06-3.89 GHz with the central frequency at 3.5 GHz for WiMAX applications, and 5.14-5.93 GHz with central frequency of 5.5 GHz for WLAN applications. Interestingly the obtained isolation level is better than-20 dB over the operating bandwidths. Simulation and measured results confirm the antenna outperformance in WiMAX and WLAN frequency range in wireless portable applications. Small size, simple structure, and high isolation without any decoupling elements are some of the advantages of the proposed design.

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Integrated Inverted-F and Open-Slot Antennas in the Metal-Framed Smartphone for <inline-formula> <tex-math notation="LaTeX">$2\times2$ </tex-math> </inline-formula> LTE LB and <inline-formula> <tex-math notation="LaTeX">$4\times4$ </tex-math> </inline-formula> LTE M/HB MIMO Operations

Cited by 74 publications

References 14 publications

Designing Uncorrelated Multiple Antennas with Round Patterns Using Handset Metal Frames

Designing Uncorrelated Multiple Antennas with Round Patterns Using Handset Metal Frames

A Quad-Port Dual-Band MIMO Antenna Array for 5G Smartphone Applications

Grounded Coplanar Waveguide-fed Compact MIMO Antenna for Wireless Portable Applications

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