A Self-Decoupling Method for MIMO Antenna Array Using Characteristic Mode of Ground Plane

Lai, Qi Xuan; Pan, Yongmei; Zheng, Shao Yong

doi:10.1109/tap.2023.3240561

Cited by 33 publications

(7 citation statements)

References 29 publications

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“…The values of the inductor (L) and capacitor (C) in an equivalent circuit can be calculated from the reactance (XL) and susceptance (BC) of the circuit. The equations for XL and BC [9][10][11][12][13][14][15][16][17][18] are based on references [42] and [43], respectively. )} + 𝐺(𝑝, 𝑔, 𝜆, 𝜃)] 𝜀 𝑒𝑓𝑓 .…”

Section: Equivalent Circuit Of the Fss Unit Cell (Ec)mentioning

confidence: 99%

“…Achieving high isolation between MIMO antenna elements is a major challenging factor in designing MIMO antennas [5]- [7]. Many different techniques have been developed to reduce mutual coupling to date [8], such as neutralization line [9], [12], Decoupling network [13], [14], and Parasitic or slot element [8]. Printed parasitic or slot element antennas are a type of antenna that uses two different modes of operation to create a wide range of frequencies that can be transmitted.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, one of the challenges facing researchers in 5G wireless communication is developing compact MIMO antennas that offer both high gain and isolation for Sub6-GHz 5G and NR spectrums. These spectrums are extensively utilized and valued for their wide adoption and ability to provide seamless coverage [7], [12], [21], [22]. Compact MIMO antennas with high gain and isolation can improve the performance and coverage of wireless communication systems, while also reducing the cost of deploying antennas.…”

Section: Introductionmentioning

confidence: 99%

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A New Technique of FSS-Based Novel Chair-Shaped Compact MIMO Antenna to Enhance the Gain for Sub-6GHz 5G Applications

Zeain,

Abu,

Althuwayb

et al. 2024

IEEE Access

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This paper introduces a new compact Chair-shaped MIMO antenna with two radiating elements and a single layer of frequency-selective surface (FSS) for 5G Sub-6GHz communication systems. They use two techniques, Parasitic element, and (FSS), for isolation and gain enhancement, respectively. The 1 × 2 MIMO antenna using a coplanar waveguide (CPW) fed. Moreover, an FSS array structure consisting of (a 68-unit) Square-shaped structure with Circular Slot (SCS) shaped cells is employed using a new technique (Surround Technique) to enhance the gain and isolation between the elements of the MIMO antenna. The proposed MIMO antenna system is printed on a Rogers 4350B substrate with a thickness of 0.508 mm. The antenna's performance is evaluated using S-parameters, radiation properties, and MIMO characteristics. The MIMO antenna system works in the Sub 6-GHz 5G band, which ranges from 3 to 6 GHz. Adding the FSS layer enhances the MIMO's antenna gain to a peak measured gain of 7.96 dBi and it also improves the MIMO antenna's isolation. The performance metrics of the proposed MIMO antenna were also investigated, including measures values of ECC = 0.004, DG = 9.99 dB, CCL = 0.2 bit/s/Hz, MEG = -3.13 dBi, and TARC = > 0dB) exhibits advantageous antenna characteristics. The observed radiation characteristics of the suggested MIMO antenna system indicate its suitability for the upcoming 5G communication systems.

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Section: Equivalent Circuit Of the Fss Unit Cell (Ec)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A New Technique of FSS-Based Novel Chair-Shaped Compact MIMO Antenna to Enhance the Gain for Sub-6GHz 5G Applications

Zeain,

Abu,

Althuwayb

et al. 2024

IEEE Access

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“…The primary advantage of this approach is its ability to improve antenna isolation based on the intrinsic characteristics of the antenna itself, eliminating the need for additional decoupling networks. Several representative works have been presented [19], [20], [21], [22], [23], [24], [25]. In [19], the mutual coupling is mitigated by adjusting the feeding position.…”

Section: Introductionmentioning

confidence: 99%

“…In [19], the mutual coupling is mitigated by adjusting the feeding position. Another method is to use a special ground design with slots [20]. In [21], [22], the patch is cut with various shapes of slots.…”

Section: Introductionmentioning

confidence: 99%

Multi-Element Self-Decoupled MIMO Patch Antenna With Flexible Characteristics

Tran-Huy,

Tuan,

Dinh

et al. 2024

IEEE Access

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This paper presents a multi-element multiple-input multiple-output (MIMO) antenna with self-isolation and flexible characteristics. The primary radiators of the proposed antenna consist of multiple ellipse-shaped patches arranged in an H-plane configuration. Self-decoupling is achieved by simultaneously different operating modes on the excited element (TM 10 mode) and non-excited element (TM 02 mode). The proposed method also shows strong extensibility. The measurements on the fabricated 4-element MIMO antenna demonstrate that the proposed decoupling method can improve the isolation by 14 dB. The antenna shows good MIMO diversity performances with respect to the envelope correlation coefficient and diversity gain. Additionally, the antenna also works effectively in when the substrate is bent, which contributes to significantly increasing the applicability of the proposed method in comparison with the other reported methods.

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