Dual-Frequency Two-Element Antenna Array with Suppressed Mutual Coupling

Yu, Yantao; Yi, Lijun; Liu, Xiaoya; Gu, Zhaokai; Rizka, Nadia Media

doi:10.1155/2015/912934

Cited by 12 publications

(6 citation statements)

References 20 publications

(19 reference statements)

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“…To reduce the mutual coupling, various methods have been proposed. These attempts include the use of decoupling and matching networks [5], neutralization line [6,7], parasitic branches [8,9], electromagnetic bandgap [10][11][12], and a defected ground structure (DGS) [3,4,[13][14][15][16][17][18][19][20][21] to limit the surface wave. On the one hand, the DGS structure is popularly adopted due to its unique characteristics of slow-wave propagation, which contributes to miniaturization of the antenna.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, different shapes of DGS have been proposed to reduce the mutual coupling between antenna elements. In [3,4,[13][14][15][16][17][18][19], different decoupling structures were employed between two symmetrically placed antenna elements to suppress the E-plane surface waves which are H-shaped, folded split-ring resonators, as well as complementary split-ring resonators, rectangular strip and spiral type. Meanwhile, studies by [18,19] referred to reducing the mutual coupling of dual frequency.…”

Section: Introductionmentioning

confidence: 99%

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Efficient Isolation of an MIMO Antenna Using Defected Ground Structure

et al. 2020

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To implement efficient isolation between units of a multi-input multi-output (MIMO) antenna, a defected ground structure (DGS) has been investigated. An antenna with two elements operating at 5.8 GHz and fed by coaxial is considered. To reduce mutual coupling between the elements, a zigzag groove is inserted into the center of two elements formed as a DGS. To verify this design, a scattering matrix was tested, such as reflection coefficient S11 and transmission coefficient S21 between two element ports. Meanwhile, radiation pattern, current distribution, envelope correlation coefficient (ECC), and diversity gain of the antenna were simulated and measured. The results showed that the mutual coupling was reduced by 28.8 dB when a DGS was used, and the ECC was less than 0.02. Owing to these good performances, each antenna element can operate almost independently, and this MIMO antenna can be efficiently applied to the narrow band Internet of Things system.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Efficient Isolation of an MIMO Antenna Using Defected Ground Structure

et al. 2020

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“…The defects act as band reject filters and suppress the coupled fields between the adjacent antenna elements by decreasing the current on the ground plane and hence increasing the separation between the elements. The defects can be slitted ground and circular split ring [25,26]. In [27], an…”

Section: Introductionmentioning

confidence: 99%

Compact 2×1 Mimo Antenna System for Lte Band

Malathi¹,

Thiripurasundari²

2017

PIER C

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Abstract-A compact 2 × 1 multiple input multiple output (MIMO) antenna system is designed to operate in the LTE band 40 (2.3-2.4) GHz. The proposed antenna consists of two circular patches fed using microstrip line. The antenna was initially designed to resonate at 5 GHz. Size reduction of 55.17% compared to conventional patch antenna is obtained after the inclusion of circular complementary split ring resonator (CSRR) in the ground plane. The resonating frequency was shifted to 2.34 GHz, thereby the board size is compact (50 × 25 × 1.6 mm 3 ). The designed antenna covers a bandwidth of 2.3 to 2.374 GHz with a maximum return loss of −27 dB at 2.34 GHz and isolation of −33.5 dB between the ports. The simulated correlation coefficient is approximately zero, and the total active reflection coefficient is 0.142 at the resonating frequency which are within the acceptable limits. The realized gain for the antenna is −8.9 dB.

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“…Most of the studies presented in literature reveal a single operating band MIMO antenna system. However, some work shows a dual-band operation [13][14][15] for two antennas. Inserting two co-centered circular split ring slots between the two elements of a dual-band printed monopole array was proposed in [13].…”

Section: Introductionmentioning

confidence: 99%

“…However, some work shows a dual-band operation [13][14][15] for two antennas. Inserting two co-centered circular split ring slots between the two elements of a dual-band printed monopole array was proposed in [13]. Although the structure is very simple, it changes the radiation pattern considerably, especially at the rear side.…”

Section: Introductionmentioning

confidence: 99%

Compact Dual-Frequency Microstrip Antenna Array With Increased Isolation Using Neutralization Lines

Yu¹,

Yi²,

Liu³

et al. 2015

PIER Letters

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Abstract-An effective technique utilizing neutralization lines to increase the isolation of a compact two-element dual-frequency microstrip antenna array is proposed in this paper. Two neutralization lines connect the two elements at the edge of each radiating patch. The positions and lengths of the two neutralization lines are studied to get the best performance of element isolation. A prototype of the proposed design was fabricated to validate the results. The measured results agree well with the simulated ones. It is shown that an increase of about 25 dB at the lower frequency and that of 17 dB at the upper frequency in isolation between the two antennas have been achieved.

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Dual-Frequency Two-Element Antenna Array with Suppressed Mutual Coupling

Cited by 12 publications

References 20 publications

Efficient Isolation of an MIMO Antenna Using Defected Ground Structure

Efficient Isolation of an MIMO Antenna Using Defected Ground Structure

Compact 2×1 Mimo Antenna System for Lte Band

Compact Dual-Frequency Microstrip Antenna Array With Increased Isolation Using Neutralization Lines

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