A New CPW-Fed Diversity Antenna for MIMO 5G Smartphones

Parchin, Naser Ojaroudi; Basherlou, Haleh Jahanbakhsh; Al‐Yasir, Yasir I. A.; Abdulkhaleq, Ahmed M.; Patwary, Mohammad; Abd‐Alhameed, Raed A.

doi:10.3390/electronics9020261

Cited by 52 publications

(29 citation statements)

References 38 publications

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“…In this design, the xz plane is H-plane (ϕ = 0 • ) and yz-plane is E-plane (ϕ = 90 • ) for the proposed antenna. From Figure 14, we can see that the antenna can gives dumbbell-like radiation characteristics in E-plane and nearly Omni-directional patterns in H-plane [44,45]. It was found that the radiation patterns of the UWB antenna deteriorate more or less with increasing frequency.…”

Section: Dual-polarized Uwb Slot Antennamentioning

confidence: 96%

Ultra-Wideband Diversity MIMO Antenna System for Future Mobile Handsets

Parchin

Basherlou

Al‐Yasir

et al. 2020

Sensors

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A new ultra-wideband (UWB) multiple-input/multiple-output (MIMO) antenna system is proposed for future smartphones. The structure of the design comprises four identical pairs of compact microstrip-fed slot antennas with polarization diversity function that are placed symmetrically at different edge corners of the smartphone mainboard. Each antenna pair consists of an open-ended circular-ring slot radiator fed by two independently semi-arc-shaped microstrip-feeding lines exhibiting the polarization diversity characteristic. Therefore, in total, the proposed smartphone antenna design contains four horizontally-polarized and four vertically-polarized elements. The characteristics of the single-element dual-polarized UWB antenna and the proposed UWB-MIMO smartphone antenna are examined while using both experimental and simulated results. An impedance bandwidth of 2.5–10.2 GHz with 121% fractional bandwidth (FBW) is achieved for each element. However, for S11 ≤ −6 dB, this value is more than 130% (2.2–11 GHz). The proposed UWB-MIMO smartphone antenna system offers good isolation, dual-polarized function, full radiation coverage, and sufficient efficiency. Besides, the calculated diversity performances of the design in terms of the envelope correlation coefficient (ECC) and total active reflection coefficient (TARC) are very low over the entire operating band.

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Section: Dual-polarized Uwb Slot Antennamentioning

confidence: 96%

Ultra-Wideband Diversity MIMO Antenna System for Future Mobile Handsets

Parchin

Basherlou

Al‐Yasir

et al. 2020

Sensors

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“…Table 2 compares the characteristics of the proposed handset antenna design and some reported 5G smartphone MIMO antenna designs in the literature with the recent states of the art [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32]. To the best of our knowledge, most of the reported sub-6 GHz 5G antennas are single-band operating, and only a few works have reported on the use of the dual-band or multi-band techniques for 5G smartphone applications.…”

Section: Comparisonmentioning

confidence: 99%

“…However, all of these designs either cover only a single-band operation frequency or use a few antenna elements with large sizes which could occupy a huge space of the mainboard. The 5G handset antenna designs introduced in [16][17][18][19][20][21][22][23][24] only cover a single frequency band. In [25][26][27][28][29], dual-band or wideband arrays are proposed to support two 5G spectrums.…”

Section: Introductionmentioning

confidence: 99%

Design of Multi-Mode Antenna Array for Use in Next-Generation Mobile Handsets

Parchin

Basherlou

Abd‐Alhameed

2020

Sensors

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In this study, a new design of a tri-band multiple-input–multiple-output (MIMO) antenna array is proposed for fifth-generation (5G) cellular systems. Its structure is composed of eight identical planar-inverted F antenna (PIFA) elements placed at different edge corners of the handset mainboard with overall dimensions of 150 × 75 mm2. The PIFA elements and ground plane of the MIMO antenna system are arranged on the back layer of the platform, which makes the design easy to integrate with the handset circuit. For S11 ≤ −10 dB, the radiation elements of the MIMO design operate at the frequency ranges of 2.5–2.7 GHz, 3.4–3.75 GHz, and 5.6–6 GHz covering the long-term evolution (LTE) 41, 42/43, and 47 operation bands, respectively. The array achieves better than 15 dB return loss results across the three operating bands. The presented antenna array not only exhibits multi-band operation but also generates the polarization diversity characteristic, which makes it suitable for multi-mode operation. The proposed antenna array was simulated and experimentally tested. Fundamental characteristics of the proposed design are investigated. It offers three band S-parameters with acceptable isolation and dual-polarized radiation with quite good efficiency and gain results. Besides this, the total active reflection coefficient (TARC) and envelope correlation coefficient (ECC) results of the PIFAs are very low over the bands. In addition, the radiation characteristics of the MIMO antenna in the presence of the user and handset components are studied. Moreover, a new and compact phased array millimeter-wave (MM-Wave) antenna with broad bandwidth and end-fire radiation is introduced which can be easily integrated into the smartphone antenna system. Due to its good performance and simple structures, the proposed smartphone antenna array design is a good candidate for future multi-mode 5G cellular applications.

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“…Seven articles in this special issue propose novel and efficient antenna designs that employ both single and MIMO synthesis for use in heterogeneous networks [6][7][8][9][10][11][12]. Some of these designs operate on fixed single/multiband and radiations, as in [6][7][8][9][10], while some have the feature of reconfigurability that allows them to operate in a tuned manner in which the resonant frequencies and patterns can be shifted/reconfigured even after the designs have been made [11,12]. The other two articles present recent work on a highly efficient power amplifier which will provide hardware solutions to the growing RF front-end integration challenges with additional design requirements towards energy efficiency for Pas [13,14].…”

Section: The Present Issuementioning

confidence: 99%