Multi-Band MIMO Antenna Design with User-Impact Investigation for 4G and 5G Mobile Terminals

Parchin, Naser Ojaroudi; Basherlou, Haleh Jahanbakhsh; Al‐Yasir, Yasir I. A.; Ullah, Atta; Abd‐Alhameed, Raed A.; Noras, James M.

doi:10.3390/s19030456

Cited by 67 publications

(38 citation statements)

References 19 publications

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“…Good agreement is observed for the presented MIMO smartphone antenna when compared with the simulations. Sensors 2020, 19 FOR PEER REVIEW 13 sufficient efficiencies over its entire operation band [58][59]. Three-dimensional (3D) radiation patterns of each element at 6 GHz (middle frequency) have been plotted in Figure 19.…”

Section: The Proposed Uwb Diversity Antenna Systemmentioning

confidence: 99%

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: The Proposed Uwb Diversity Antenna Systemmentioning

confidence: 99%

Ultra-Wideband Diversity MIMO Antenna System for Future Mobile Handsets

Parchin

Basherlou

Al‐Yasir

et al. 2020

Sensors

Self Cite

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“…32 As seen in the simulated result, the antenna has −10-dB impedance bandwidth, for frequency bands 3.4-4.4 and 8.3-11 GHz. It is challenging to design dipole antenna for a very good reflection coefficient of −10 dB and below for ultrawide frequency band (3.1-12 GHz), 32,33 so dipole antenna with −6 dB reflection coefficient is considered for AMC validation.…”

Section: Reflection Coefficientmentioning

confidence: 99%

Design of wide band compact bend triangular resonator artificial magnetic conductor and its application for antenna gain enhancement

Tamrakar

Kommuri

2020

Int J Communication

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Summary In this paper, a compact bend triangular resonator (CBTR) structure is proposed as artificial magnetic conductor (AMC) to enhance antenna gain for wide frequency bandwidth. This paper presents the metamaterial properties of the CBTR structure like absorbance and reflection phase. The CBTR unit cell gives in‐phase reflection (0° ± 90°) for 55.2% bandwidth. The CBTR unit‐cell reflection phase analysis is presented for the different height of normal incident wave. The CBTR AMC performance is validated using a wideband dipole antenna. For −6‐dB impedance bandwidth, the standalone dipole antenna covers ultrawide frequency range 3.1–12 GHz and for −10‐dB impedance bandwidth, antenna has dual band frequency response 3.4–4.4 GHz and 8.3–11 GHz. The antenna shows good impedance matching and radiation characteristics for frequency range, where the unit‐cell reflection phase is 135° to 45° for frequency range 2.5–6.5 GHz (bandwidth of 88.8%). The broadside directivity of 7 dBi is achieved for the dipole antenna with CBTR AMC in the frequency range of 2.5–6.5 GHz and broadside gain of >5 dBi in the frequency range of 3.2–6.7 GHz (bandwidth of 70.7%). The antenna efficiency of 60% (minimum) is achieved for the frequency range of 3.68.0 GHz (75.8%). The proposed CBTR design is orthogonally symmetric and is useful for dual‐polarized wideband frequency applications like wireless local area network (WLAN) (2.4–2.5 and 5.15–5.85 GHz) and new radio (NR) 5G sub‐6‐GHz (3.3–5.0 GHz).

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“…Several four-element MIMO antenna systems have been presented in literature to cover 5G as well as 2G, 3G, and 4G frequency bands [ 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 ]. In [ 10 ], a four-element dual-band MIMO antenna system was proposed to cover two frequency bands, i.e., 734–790 and 2307–2475 MHz.…”

Section: Introductionmentioning

confidence: 99%

Design of a Compact Dual-Band MIMO Antenna System with High-Diversity Gain Performance in Both Frequency Bands

et al. 2021

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A compact four-element dual-band multiple-input and multiple-output (MIMO) antenna system is proposed to achieve high isolation and low channel capacity loss. The MIMO antenna was designed and optimized to cover the dual-frequency bands; the first frequency band is a wide band, and it covers the frequency range of 1550–2650 MHz, while the other frequency band covers the 3350–3650 MHz range. The measured wide-band impedance bandwidths of 1.1 GHz and 300 MHz were achieved in the lower and upper frequency bands, respectively. The proposed structure consists of four novel antenna elements, along with a plus-sign-shaped ground structure on an FR4 substrate. The overall electrical size of the whole dual-band MIMO antenna system is 0.3λ(W) × 0.3λ(L) × 0.008λ(H) for the lower frequency band. It achieved greater than 10 and 19 dB isolation in the lower and upper frequency bands, respectively. The antenna system accomplished an envelope correlation coefficient of |ρ|≤0.08 in the lower frequency band, while it achieved |ρ|≤0.02 in the higher frequency band. The computed channel capacity loss remained less than almost 0.4 bits/s/Hz in both frequency bands. Therefore, it achieved good performance in both frequency bands, with the additional advantage of a compact size. The proposed MIMO antenna is suitable for compact handheld devices and smartphones used for GSM (Global System for Mobiles), UMTS (Universal Mobile Telecommunications Service), WCDMA (Wideband Code Division Multiple Access), LTE (Long Term Evolution), 5G sub-6 GHz, PCS (Personal Communications Service), and WLAN (wireless local area network) applications.

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Multi-Band MIMO Antenna Design with User-Impact Investigation for 4G and 5G Mobile Terminals

Cited by 67 publications

References 19 publications

Ultra-Wideband Diversity MIMO Antenna System for Future Mobile Handsets

Ultra-Wideband Diversity MIMO Antenna System for Future Mobile Handsets

Design of wide band compact bend triangular resonator artificial magnetic conductor and its application for antenna gain enhancement

Design of a Compact Dual-Band MIMO Antenna System with High-Diversity Gain Performance in Both Frequency Bands

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