Mutual coupling reduction of dual-frequency MIMO array with neutralization lines

Yu, Yantao; Yi, Lijun; Liu, Xiaoya; Gu, Zhaokai

doi:10.1109/apmc.2015.7411612

Cited by 8 publications

(5 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Hence, to improve isolation between the patch antenna elements, we incorporate ground plane by the use of defected ground structure [4]. The process of fabrication of the antenna array system includes the various steps of the photolithographic techniques in the designing of the patch antenna array, which are discussed below in great detail using a precise and stepwise flowchart sequence [1,[10][11][12][13][14][15][16][17][18][19][20]:…”

Section: Methodology and Materials Usedmentioning

confidence: 99%

See 1 more Smart Citation

Suppression of Mutual Coupling Between Two Microstrip Patch Antennas using a Sophisticated Non-Linear DGS Structure for High Frequency Wave Applications

Gupta

Dwivedi

2018

Rev. Dir. Est. e Telecomunicacoes

View full text Add to dashboard Cite

Purpose – If the two or more than two antennas are present in the antenna array, the mutual coupling between them becomes a critical issue to deal with. At microwave frequency, microstrip design is often used as a transmission line because of its good performance in transferring the energy and microwave signals. Most commonly used microstrip antenna has similar structure as that of the microstrip line. On one side of dielectric substrate layer, is an extremely thin layer of conductor that forms the radiating elements and on bottom side is the ground plane made up of metallic material. Our main motive is to maintain mutual coupling suppressing structure to its simplest form. Methodology/approach/design – We therefore use a Defected Ground Structure (DGS), which greatly decreases the mutual coupling between the two antennas, thus enhancing the performance of the antenna array. Findings – The introduction of the DGS does not affect the characteristics of antenna array system. The Simulation is done using CST (Computer Simulation Technology) software and the results are tested using Vector Network Analyzer. Both the simulated and measured results are in good agreement. The coupling has been reduced from -22 to -37 dB. The recent boom in wireless industry has led to the demand for the multiband antennas.

show abstract

Section: Methodology and Materials Usedmentioning

confidence: 99%

“…S11 & S12 v/s Freq. in presence of DGS for patch array[1,9,10,[16][17][18][19][20][21][22][23][24][25] …”

mentioning

confidence: 99%

Suppression of Mutual Coupling Between Two Microstrip Patch Antennas using a Sophisticated Non-Linear DGS Structure for High Frequency Wave Applications

Gupta

Dwivedi

2018

Rev. Dir. Est. e Telecomunicacoes

View full text Add to dashboard Cite

show abstract

“…Up to now, various methods to suppress coupling have been proposed, including polarization diversity [2,3], using neutralization line [4], defective ground structure (DGS) [5,6], introducing electromagnetic bandgap (EBG) structure [7], and arranging metamaterial (MTM) or metasurface (MS) based structure [8][9][10][11][12][13][14][15][16][17]. Polarization diversity can obtain high isolation without adding additional decoupling structure as proposed in [2] and [3].…”

Section: Introductionmentioning

confidence: 99%

“…Adding neutralization lines between radiation elements is also an effective method to reduce coupling. For example, in [4], two U-shaped neutralization lines are introduced to neutralize coupling current and the isolation reaches 25 dB. In some works, DGS are introduced by etching slots on the ground to suppress coupling as reported in [5] and [6].…”

Section: Introductionmentioning

confidence: 99%

A Freely Extendable Closely Packed Dual-band MIMO Antenna for 5G Wireless Communication

Su,

Lin,

Dou

et al. 2023

PIER Letters

View full text Add to dashboard Cite

In this paper, a freely extendable dual-band multiple-input multiple-output (MIMO) antenna for 5G wireless communication is proposed. The highlight of the antenna is that the 2-port array can be freely extended by repeating the radiating elements and decoupling structure periodically. A 2-port MIMO antenna is proposed firstly. It consists of two dual-band radiating elements placed side by side with edge-to-edge spacing of 0.08λ0. Then, a novel multiple bent split ring (MBSR) metamaterial (MTM) unit is designed. By adjusting the size, two kinds of units with single negative characteristics at two resonance points are obtained. By arranging the MBSR-MTM units cleverly between the two elements, dual-frequency decoupling is realized. Simulated and experimental results indicate that the antenna can operate at frequencies of 2.57∼2.62 GHz and 3.5∼3.6 GHz with the highest isolation of 30.2 dB and 44.5 dB, respectively. Additionally, the envelope correlation coefficient (ECC) is much smaller than 0.05, implying good diversity performance. Furthermore, simulated and experimental results show that the 2-port antenna can be freely extended to multiple-port MIMO antenna without any modification, and the isolation between different ports remains high. The antenna has a compact structure, low profile, and high isolation, providing an excellent choice for 5G wireless communication.

show abstract

“…This technology dramatically increases the data transmission rate without increasing the bandwidth or transmitting power by arranging multiple antennas at the transmitting and receiving ends [1,2]. In general, the performance of the MIMO antenna is strongly affected by the envelope correlation coefficient (ECC) between the antenna elements; a lower ECC offers the best performance [3]. The mutual coupling (MC) between the antennas significantly affects ECC.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Envelope Correlation Coefficient of MIMO Antennas Connected with Suspended Lines

Kim

Chung

2020

J Electromagn Eng Sci

View full text Add to dashboard Cite

Inserting a suspended line is a widely used technique to reduce the envelope correlation coefficients (ECC) of multiple-input multiple-output (MIMO) antennas, but its ECC reduction mechanism has not been carefully investigated so far. In this paper, MIMO antenna pairs connected with different suspended lines were evaluated using a full-wave simulation and measurement results. We calculated the surface current density at the center of the suspended line inserted between the antenna elements and found that the derivative of the surface current density was closely related to the ECC values. Furthermore, parametric studies showed that the suspended line length determines the ECC reduction bandwidth of the MIMO antenna, and the antenna length controls the ECC minimum frequency point. These guidelines provide useful insights into designing a low ECC MIMO antenna employing a suspended line.

show abstract

Mutual coupling reduction of dual-frequency MIMO array with neutralization lines

Cited by 8 publications

References 9 publications

Suppression of Mutual Coupling Between Two Microstrip Patch Antennas using a Sophisticated Non-Linear DGS Structure for High Frequency Wave Applications

Suppression of Mutual Coupling Between Two Microstrip Patch Antennas using a Sophisticated Non-Linear DGS Structure for High Frequency Wave Applications

A Freely Extendable Closely Packed Dual-band MIMO Antenna for 5G Wireless Communication

Analysis of the Envelope Correlation Coefficient of MIMO Antennas Connected with Suspended Lines

Contact Info

Product

Resources

About