New EBG solutions for mutual coupling reduction

Exposito-Dominguez, Gonzalo; Fernández-González, José-Manuel; Padilla, Pablo; Silva, Manuel

doi:10.1109/eucap.2012.6206261

Cited by 22 publications

(6 citation statements)

References 10 publications

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“…Electromagnetic band-gap (EBG) structures [6,7] are used to suppress the surface wave and enhance the isolation. But for this method, the size of the EBG elements is always larger than 0.1 0 and the structure is complicated in practical design and can affect the radiation characteristics of the whole system.…”

Section: Introductionmentioning

confidence: 99%

Highly Compact MIMO Antenna System for LTE/ISM Applications

Yang

2015

International Journal of Antennas and Propagation

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Planar monopole antenna is proposed as the antenna element to form a compact dual-element multiple-input-multiple-output (MIMO) antenna system for LTE2300 (used in Asia and Africa) and ISM band operation. The system can cover a 310 MHz (2.20-2.51 GHz) operating bandwidth, with the total size of 15.5 mm × 18 mm × 1.6 mm. Measured isolation higher than 16 dB is obtained without any specially designed decoupling structures, while the edge-to-edge element spacing is only 7.8 mm (0.08 at 2.20 GHz). Radiation characteristics, correlation coefficient, and the performance of the whole system with a metal sheet and a plastic housing show this system is competitive for practical MIMO applications. The antenna element is further used to build an eight-element MIMO antenna system; also good results are achieved.

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Section: Introductionmentioning

confidence: 99%

Highly Compact MIMO Antenna System for LTE/ISM Applications

Yang

2015

International Journal of Antennas and Propagation

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“…In the reference antenna, each decoupling improved design has its own characteristics. As a result, the proposed antenna has the smallest center‐to‐center distance between adjacent antenna compared to that in References . The proposed antenna achieves an isolation improvement of about 10% relative bandwidth in both the L and S bands, which is better than at the expense of thicker layers than other antennas.…”

Section: Experimental Validation and Discussionmentioning

confidence: 85%

“…For instance, shorted annular ring was proposed to reduce the surface wave . In References , electromagnetic bandgap (EBG) structures are used to suppress surface currents, thereby reducing MC between antenna elements. However, to adopt the above several decoupling structures, the required antenna element spacing must be large, even greater than half a free‐space wavelength, so these methods are not suitable for small spacing.…”

Section: Introductionmentioning

confidence: 99%

Reduction of mutual coupling between patch antennas using defected ground structure in L‐ and S‐bands

Zhao

Sun

et al. 2019

Micro & Optical Tech Letters

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Mutual coupling (MC) is a common phenomenon in array antennas, which severely reduces antenna performance. Therefore, reducing MC is an important direction in array antennas. This article presents a novel defected ground structure (DGS) suppressing the MC between Land S-band microstrip patches. The antenna operates in two frequency bands with both relative bandwidths of approximately 10%. To reduce the overall size, the antennas of the two bands are designed together, using the same ground, reflective cavity, and dielectric substrates. By introducing six DGSs in the middle of the ground, the surface currents of the two frequency bands are cutoff, thus reducing the MC. A prototype is fabricated and measured. From the measured results, the isolation of more than 26.18 dB can be achieved in the L-band from 1.6 to 1.8 GHz, and the isolation of 12.3 dB can be achieved in the S-band from 2.05 to 2.25 GHz with the adoption of the DGS. The impedance bandwidth with return loss greater than 15 dB is 11.76% and 9.3% in the L-and S-bands, respectively, which provides valuable reference for the design of other dual-band antennas.

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“…In [12] MEBG is proposed and applied to improve the isolation of radiating elements in an array by suppressing the surface wave propagation. Various EBG architectures were designed [13][14][15][16][17][18][19] and applied to antenna arrays for mutual coupling reduction. In this paper, MEBG surface have been chosen as a base of designing new SEBG and PSEBG surfaces.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Electromangnetic Band Gap Structure for Mutual Coupling Reduction in Antenna Arrays-A Comparative Study

Kumar¹,

Khan²

2018

IJET

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In this paper, two new three layer (stacked) Electromagnetic Band Gap structures are proposed, named as Stacked Electromagnetic Band Gap (SEBG) and Progressive Stack Electromagnetic Band Gap (PSEBG) structures. Its electromagnetic (EM) properties are determined by using Finite element method (FEM) based simulator and obtained results are compared with classical mushroom type electromagnetic band gap (MEBG) structure. Both SEBG and PSEBG structures proposed in this paper consists of two layers above the conducting ground plane; a lower layer, contains array of small MEBGs with square patches and an upper layer contains square planar MEBG structure. Vertical conducting stubs passing through substrate shorting all square patches in both the layers with conducting ground. Three EBG structures are exhibiting the property of forbidden band gap (FBG), where surface wave propagation is restricted. The FBG property helps in minimization of mutual coupling between array antennas when electromagnetic band gap structures are incorporated between array elements. In this paper, the level of coefficient of mutual coupling between array antenna in the presence of SEBG and PSEBG are investigated, obtained results are compared with classical MEBG results. The co-efficient of mutual coupling is reduced up to 12dB in the presence of proposed models.

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New EBG solutions for mutual coupling reduction

Cited by 22 publications

References 10 publications

Highly Compact MIMO Antenna System for LTE/ISM Applications

Highly Compact MIMO Antenna System for LTE/ISM Applications

Reduction of mutual coupling between patch antennas using defected ground structure in L‐ and S‐bands

Optimization of Electromangnetic Band Gap Structure for Mutual Coupling Reduction in Antenna Arrays-A Comparative Study

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