A Transmission-Line-Based Decoupling Method for MIMO Antenna Arrays

Research output: Contribution to journalJournal articleResearchpeer-review

143 Downloads (Pure)

Abstract

A transmission-line-based decoupling technique for dual-polarized multiple-input and multiple-output (MIMO) antenna arrays is presented and analyzed. The proposed scheme enables well-canceled coupling for the adjacent elements under co-polarization, without degrading the isolation of the cross-polarized ports. First, a decoupling network based on the presented method for a 2 times 2 MIMO array is provided, along with a comprehensive design procedure. Calculations and simulations are operated to verify decoupling performance. For further verification, a 2 times 2 dual-polarized patch array with the proposed decoupling method is developed. The decoupling network characterizes low profile, compact size, and low insertion loss, which is realized in a single layer. Measurements denote that the isolations between the co-polarized elements are improved from 16 to 20 dB to over 30 dB after decoupling at the center frequency of 2.45 GHz. Subsequently, based on the proposed 2 times 2 decoupling method, a decoupling network for large-scale dual-polarized MIMO arrays is presented. A design example of a 4 times 4 dual-polarized patch antenna array is established. Full-wave simulations indicate that the isolations are enhanced to better than 30 dB with a small insertion loss of less than 0.45 dB and can widely be used for phased array and massive MIMO array systems.

Original languageEnglish
Article number8649601
JournalIEEE Transactions on Antennas and Propagation
Volume67
Issue number5
Pages (from-to)3117-3131
Number of pages15
ISSN0018-926X
DOIs
Publication statusPublished - May 2019

Fingerprint

Insertion losses
Antenna arrays
Electric lines
Microstrip antennas
Polarization

Keywords

  • Dual-polarization
  • isolation
  • multiple-input and multiple-output (MIMO)
  • mutual coupling
  • phased antenna array

Cite this

@article{10a5335b979b4eb8bf6249844415e89c,
title = "A Transmission-Line-Based Decoupling Method for MIMO Antenna Arrays",
abstract = "A transmission-line-based decoupling technique for dual-polarized multiple-input and multiple-output (MIMO) antenna arrays is presented and analyzed. The proposed scheme enables well-canceled coupling for the adjacent elements under co-polarization, without degrading the isolation of the cross-polarized ports. First, a decoupling network based on the presented method for a 2 times 2 MIMO array is provided, along with a comprehensive design procedure. Calculations and simulations are operated to verify decoupling performance. For further verification, a 2 times 2 dual-polarized patch array with the proposed decoupling method is developed. The decoupling network characterizes low profile, compact size, and low insertion loss, which is realized in a single layer. Measurements denote that the isolations between the co-polarized elements are improved from 16 to 20 dB to over 30 dB after decoupling at the center frequency of 2.45 GHz. Subsequently, based on the proposed 2 times 2 decoupling method, a decoupling network for large-scale dual-polarized MIMO arrays is presented. A design example of a 4 times 4 dual-polarized patch antenna array is established. Full-wave simulations indicate that the isolations are enhanced to better than 30 dB with a small insertion loss of less than 0.45 dB and can widely be used for phased array and massive MIMO array systems.",
keywords = "Dual-polarization, isolation, multiple-input and multiple-output (MIMO), mutual coupling, phased antenna array",
author = "Yiming Zhang and Shuai Zhang and Jia-Lin Li and Pedersen, {Gert F.}",
year = "2019",
month = "5",
doi = "10.1109/TAP.2019.2900406",
language = "English",
volume = "67",
pages = "3117--3131",
journal = "I E E E Transactions on Antennas and Propagation",
issn = "0018-926X",
publisher = "IEEE",
number = "5",

}

A Transmission-Line-Based Decoupling Method for MIMO Antenna Arrays. / Zhang, Yiming; Zhang, Shuai; Li, Jia-Lin; Pedersen, Gert F.

In: IEEE Transactions on Antennas and Propagation, Vol. 67, No. 5, 8649601, 05.2019, p. 3117-3131.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - A Transmission-Line-Based Decoupling Method for MIMO Antenna Arrays

AU - Zhang, Yiming

AU - Zhang, Shuai

AU - Li, Jia-Lin

AU - Pedersen, Gert F.

PY - 2019/5

Y1 - 2019/5

N2 - A transmission-line-based decoupling technique for dual-polarized multiple-input and multiple-output (MIMO) antenna arrays is presented and analyzed. The proposed scheme enables well-canceled coupling for the adjacent elements under co-polarization, without degrading the isolation of the cross-polarized ports. First, a decoupling network based on the presented method for a 2 times 2 MIMO array is provided, along with a comprehensive design procedure. Calculations and simulations are operated to verify decoupling performance. For further verification, a 2 times 2 dual-polarized patch array with the proposed decoupling method is developed. The decoupling network characterizes low profile, compact size, and low insertion loss, which is realized in a single layer. Measurements denote that the isolations between the co-polarized elements are improved from 16 to 20 dB to over 30 dB after decoupling at the center frequency of 2.45 GHz. Subsequently, based on the proposed 2 times 2 decoupling method, a decoupling network for large-scale dual-polarized MIMO arrays is presented. A design example of a 4 times 4 dual-polarized patch antenna array is established. Full-wave simulations indicate that the isolations are enhanced to better than 30 dB with a small insertion loss of less than 0.45 dB and can widely be used for phased array and massive MIMO array systems.

AB - A transmission-line-based decoupling technique for dual-polarized multiple-input and multiple-output (MIMO) antenna arrays is presented and analyzed. The proposed scheme enables well-canceled coupling for the adjacent elements under co-polarization, without degrading the isolation of the cross-polarized ports. First, a decoupling network based on the presented method for a 2 times 2 MIMO array is provided, along with a comprehensive design procedure. Calculations and simulations are operated to verify decoupling performance. For further verification, a 2 times 2 dual-polarized patch array with the proposed decoupling method is developed. The decoupling network characterizes low profile, compact size, and low insertion loss, which is realized in a single layer. Measurements denote that the isolations between the co-polarized elements are improved from 16 to 20 dB to over 30 dB after decoupling at the center frequency of 2.45 GHz. Subsequently, based on the proposed 2 times 2 decoupling method, a decoupling network for large-scale dual-polarized MIMO arrays is presented. A design example of a 4 times 4 dual-polarized patch antenna array is established. Full-wave simulations indicate that the isolations are enhanced to better than 30 dB with a small insertion loss of less than 0.45 dB and can widely be used for phased array and massive MIMO array systems.

KW - Dual-polarization

KW - isolation

KW - multiple-input and multiple-output (MIMO)

KW - mutual coupling

KW - phased antenna array

UR - http://www.scopus.com/inward/record.url?scp=85065434042&partnerID=8YFLogxK

U2 - 10.1109/TAP.2019.2900406

DO - 10.1109/TAP.2019.2900406

M3 - Journal article

VL - 67

SP - 3117

EP - 3131

JO - I E E E Transactions on Antennas and Propagation

JF - I E E E Transactions on Antennas and Propagation

SN - 0018-926X

IS - 5

M1 - 8649601

ER -