A novel combined structure for decoupling E/H-plane microstrip antenna array

Zou, Xiao‐Jun; Wang, Guangming; Wang, Yawei

doi:10.1002/mmce.21244

Cited by 10 publications

(6 citation statements)

References 16 publications

(28 reference statements)

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“…Table 1 depicts the comparative summary analysis of different reported literatures related to N ‐port MIMO antennas. The proposed geometry can even extended to multi‐element array antenna configurations with improved isolation schemes 24–26 for wireless environments.…”

Section: Experimental Validationsmentioning

confidence: 99%

Design of quad‐element MIMO antenna with a multi‐functional ground topology for UWB wireless applications

Mohanty

Sahu

2021

Int J RF Mic Comp-Aid Eng

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A hybrid fractal slot printed quad‐element MIMO antenna fabricated on a planar hexagonal substrate is proposed in this study. The antenna operates from (2–12) GHz with IBW of 142.85%. The ground topology consists of semi‐elliptic structures with defected slots and contorted stubs to form a rotationally symmetric decoupler unit. The defected structures improves bandwidth response and reduce X‐pol. Radiations in E‐& H‐planes, while the contorted stubs improves port‐isolations with 17–20 dB. The decoupler unit acts as isolator, resonator and neutralizer. When contorted stubs are introduced, due to the induced coupling effect, impedance matching at lower and upper bands has been improved. The induced coupling effect has in‐phase and out‐of‐phase current modes, which are neutralized generating current NULLS owing to the symmetry of decoupler, thus helps to mitigate the condensed near‐field radiating currents. Abovestated facts are supported with the study of surface currents and the analysis explores a leveraged feature in MIMO decoupling mechanism. A prototype antenna of size 1682.78 mm2 was fabricated and experimented which are in good agreements with the simulation results, which shows potential for UWB wireless and sensing applications.

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Section: Experimental Validationsmentioning

confidence: 99%

Design of quad‐element MIMO antenna with a multi‐functional ground topology for UWB wireless applications

Mohanty

Sahu

2021

Int J RF Mic Comp-Aid Eng

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“…With the development of 5G communication, broadband high‐gain antennas are developing rapidly 1–4 . All coins are double‐sided and the patch antenna is double sided.…”

Section: Introductionmentioning

confidence: 99%

Broadband and high‐aperture‐efficiency metasurface antenna using multi‐mode radiator

Bai

Wang

Zou

2021

Int J RF Microw Comput Aided Eng

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A high‐aperture efficiency and broadband metasurface antenna array with multi‐mode radiator is put forward in this article. The abnormal slot is etched at the center of the ground plane and fed to the antenna via a microstrip line. Resonant along the slot line, and in the electric field, two short horizontal lines with uniform gaps are symmetrically added near zero. Additional radiation modes have been introduced. Then, broadband slot antenna with two resonances is obtained by combining full‐wavelengths provided by the first slot. Working bandwidth increased from 7.6% to 21.1%. By introducing a ring slot, the antenna gain is increased by 0.9 dBi. At the same time, the aperture efficiency is modified by 12.9%. A 2 × 2 array was made to verify the design, with an overall size of 2.01λ0× 2.01λ0 × 0.07λ0. The simulation and measurement results show that the operating bandwidth is 38.9% with maximum gain is 15.8 dBi.

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“…Numerous ways have been proposed to decrease the mutual coupling between antennas, such as electromagnetic bandgap (EBG) structure [4][5][6], defected ground structure (DGS) [7][8][9][10][11], polarization-conversion isolator [12], resonator [13], neutralization line [14][15][16], coupled resonator decoupling network [17], interference cancellation chip [18] and metamaterial [19][20][21]. However, these decoupling approaches are limited to two-element coupled antennas or one-dimensional antenna array.…”

Section: Introductionmentioning

confidence: 99%

A Low-Profile Decoupling Slot-Strip Array for 2 × 2 Microstrip Antenna

et al. 2020

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Two-dimensional antennas provide additional variables that can be used to control and shape the pattern, and widely used in engineering applications include tracking radar, communications, direction finding and many others. However, the reduced mutual coupling becomes more complex due to the mode and strength of the mutual coupling field betweensani adjacent elements are different. In this paper, a lowprofile decoupling slot-strip array (DSSA) for 2×2 microstrip antenna is proposed. The DSSA consists of a slot array etched on the ground plane and a strip array printed on the radiation patches plane. The band-stop effect of the slot array decreases the mutual coupling of both H-plane and D-plane. Meanwhile, the coupling current generated by the induced current on strip array can cancel the coupling current generated by excited current, which can significantly improve the E-plane isolation Additionally, the scattering parameters of other three types of antenna which have the different relative positions of feeding ports are also discussed. To verify the proposed viewpoint, a 2×2 antenna with the DSSA is modeled and manufactured. The experimental results demonstrate that a considerable mutual coupling reduction of 33.2 dB for H-plane, 28.5 dB for E-plane, and 24.1 dB for D-plane is achieved while-10 dB bandwidth for S 11 remains almost unchanged. Fortunately, the experimental results are in good agreement with the simulation results, which confirms that the DSSA has an excellent promising application in two-dimensional antenna. INDEX TERMS Decoupling slot-strip array, 2×2 antenna, mutual coupling reduction, low-profile.

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A novel combined structure for decoupling E/H-plane microstrip antenna array

Cited by 10 publications

References 16 publications

Design of quad‐element MIMO antenna with a multi‐functional ground topology for UWB wireless applications

Design of quad‐element MIMO antenna with a multi‐functional ground topology for UWB wireless applications

Broadband and high‐aperture‐efficiency metasurface antenna using multi‐mode radiator

A Low-Profile Decoupling Slot-Strip Array for 2 × 2 Microstrip Antenna

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