Isolation Enhancement in Dual-Band Monopole Antenna for 5G Applications

Wang, Wen; Wu, Yongle; Yang, Yuhao

doi:10.1109/tcsii.2020.3040164

Cited by 55 publications

(25 citation statements)

References 16 publications

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“…It is usually characterized by ECC. The S ‐parameters can be used to calculate ECC 12 . When the MIMO antenna is a two‐port antenna, the calculation formula is shown in (1):

ECC goodbreak= ρ_{e} goodbreak= \frac{{(||, S_{11}^{*} S_{12}^{'} goodbreak+ S_{21}^{*} S_{22}^{'})}^{2}}{((), 1 ‐ ((), {|S_{11}|}^{2} goodbreak+ {|S_{21}|}^{2})) ((), 1 ‐ ((), {|S_{22}|}^{2} goodbreak+ {|S_{12}|}^{2}))}

The ECC calculation in (1) is a simplification of the formula in Reference 3 and is calculated by MATLAB and plotted in Figure 16.…”

Section: Simulated and Measured Resultsmentioning

confidence: 99%

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Design of a tri‐band multiple input multiple output antenna with high isolation for 5G applications

Wang

et al. 2022

Int J RF Mic Comp-Aid Eng

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A novel tri‐band multiple input multiple output (MIMO) antenna with high‐isolation is proposed in this article. The proposed tri‐band MIMO antenna consists of two tri‐band monopole antennas placed symmetrically. Due to the ground surface wave, a defected ground structure (DGS) is etched to extend the ground surface current and reduce the port‐to‐port coupling. Then two ground branches are loaded on the ground plane as a reflector that inhibit and reflect the coupling between the two parasitic elements. In order to suppress the space surface waves, a novel non‐connected neutralization structure is loaded on the microstrip line of two monopole antenna elements. As a result, the quite good isolation and impedance matching are obtained by generating different resonance at different frequency of the structure. Finally, the proposed tri‐band MIMO antenna with the decoupling structure achieves 5G tri‐band of 2.5–2.7, 3.26–3.83, and 4.73–4.97 GHz (S11&S22 < −10 dB, S12 & S21 < −25 dB). The results show that the proposed tri‐band MIMO antenna can cover the whole 5G bands (sub‐6 GHz) and has good isolation characteristic, which can well meet the 5G applications.

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“…It is usually characterized by ECC. The S ‐parameters can be used to calculate ECC 12 . When the MIMO antenna is a two‐port antenna, the calculation formula is shown in (1):

ECC goodbreak= ρ_{e} goodbreak= \frac{{(||, S_{11}^{*} S_{12}^{'} goodbreak+ S_{21}^{*} S_{22}^{'})}^{2}}{((), 1 ‐ ((), {|S_{11}|}^{2} goodbreak+ {|S_{21}|}^{2})) ((), 1 ‐ ((), {|S_{22}|}^{2} goodbreak+ {|S_{12}|}^{2}))}

The ECC calculation in (1) is a simplification of the formula in Reference 3 and is calculated by MATLAB and plotted in Figure 16.…”

Section: Simulated and Measured Resultsmentioning

confidence: 99%

“…The S-parameters can be used to calculate ECC. 12 When the MIMO antenna is a two-port antenna, the calculation formula is shown in (1):…”

Section: Envelop Correlation Coefficient (Ecc)mentioning

confidence: 99%

Design of a tri‐band multiple input multiple output antenna with high isolation for 5G applications

Wang

et al. 2022

Int J RF Mic Comp-Aid Eng

Self Cite

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“…A DGS technique is used to improve isolation. Cut slots of various shapes are used in the ground plane [1][2][3][4][5][6]. To improve isolation, a decoupling structure is constructed that decouples the input of radiating patches from the matching network setup in [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Development of a Wide Bandwidth Massive Eight Dissimilar Radiating Element Multiband MIMO Antenna for mm-Wave Application

Sarade¹,

Ruikar²

2022

Eng. Technol. Appl. Sci. Res.

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This paper proposes a massive MIMO antenna operating on 6GHz frequency as millimeter-wave. It consists of eight dissimilar-shaped radiating elements. The radiating element of the antenna is designed using square shape with different cut slots. Parasitic elements and defected ground structure are introduced for the enhancement of the correlation coefficients and total active reflection coefficients of the MIMO antenna. The rectangular shape parasitic elements are placed between the square radiating patches. The ground plane consists of rectangular shape defected ground structures. The antenna is constructed on the FR-4 substrate. Parameters such as isolation, cross-correlation, and bandwidth are enhanced. The obtained through simulations antenna parameters values of return loss, isolation, cross-correlation, total active reflection coefficients, and bandwidth are less than -10dB, less than -9.30dB, less than 0.16, less than 0.00015, and greater than 200MHz respectively. The antenna operates on various bands with fractional bandwidth greater than 3% for a frequency of 6GHz. This antenna is useful for a variety of applications in wireless systems.

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“…However, most shared-aperture antennas with both Sub-6 GHz and mm-wave bands could only realize high aperture reuse efficiency, high gain, but rarely have the same functionality as the above aspect (c). Additionally, MIMO technology has been widely applied in 5G communication because of its higher data rate, reduction in bit error rate (BER), wide coverage, high isolation [13] [14]. Therefore, for designing the shared-aperture antenna with a large frequency ratio in Sub-6Ghz and mm-wave bands, we not only achieve the above-mentioned antenna performance, but also focus on dual polarization, beam steering, array characteristics, etc.…”

Section: Introductionmentioning

confidence: 99%

Dual-Band Shared-Aperture Multiple Antenna System With Beam Steering for 5G Applications

Yang

Zhang

2022

IEEE Trans. Circuits Syst. II

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This brief presents a high-efficiency shared-aperture multiple antenna system. Unlike general shared-aperture antennas, the proposed antenna system with the size of 0.384× 0.384×0.171λ 3 makes high reuse the aperture in the two respective frequency bands, and the antenna structures of the two bands can each generate positive mutual enhancement for their radiating characteristics in the two bands. The flat Luneburg lens can realize beam steering capability for mm-wave antenna from 25.5 to 29.5 GHz with the gain of 19.3 dBi and improve the wide-angle scanning matching impedance for the Sub-6 GHz antenna from 3.2 to 3.45 GHz with the gain of 6.2 dBi. Meanwhile, as the radiating patch of the Sub-6 GHz antenna, the meta-surface can reduce the focal distance of the lens and maintain the high gain of the mm-wave antenna. Hence, a compact antenna system can achieve beam steering capabilities (up to 112°) in the Sub-6 GHz band and (up to 56°) mm-wave band with high gain, respectively. And the port isolation of the proposed antenna system between two frequency bands is generally better than 25 dB and even up to 40 dB at the Sub-6 GHz band. As reported in the simulated and measured results in a linear array, the antenna system shows good radiating performance with a dual-polarization state. Hence, the proposed multiple antenna system is a good candidate for 5G applications because of the high-efficiency, beam steering with high gain and full 5G band.

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Isolation Enhancement in Dual-Band Monopole Antenna for 5G Applications

Cited by 55 publications

References 16 publications

Design of a tri‐band multiple input multiple output antenna with high isolation for 5G applications

Design of a tri‐band multiple input multiple output antenna with high isolation for 5G applications

Development of a Wide Bandwidth Massive Eight Dissimilar Radiating Element Multiband MIMO Antenna for mm-Wave Application

Dual-Band Shared-Aperture Multiple Antenna System With Beam Steering for 5G Applications

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