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High-Isolation Two-Port UWB Antenna Based on Shared Structure

Nie, Li Ying ; Lin, Xian Qi ; Xiang, Shang LU ; Wang, Bao ; Xiao, Long and Ye, Jun Yong (2020) In IEEE Transactions on Antennas and Propagation 68(12). p.8186-8191
Abstract

In this communication, a novel planar structure-shared diverse two-port ultrawideband (UWB) antenna with high isolation and common ground is proposed based on a new slot-loaded method. A tapered slot with an end-fire radiation pattern is etched in the top middle section of a coplanar waveguide (CPW)-fed printed monopole antenna to reduce its effects on the monopole mode. The two-port UWB antenna features diverse patterns which can fully cover the upper space. A nonuniformly symmetric-coupled coplanar waveguide (NSC-CPW) is introduced to enable the two sets of the feeding structures sharing a ground plane with minimum interaction. Due to the modal orthogonality, high isolation between the two ports is obtained without additional... (More)

In this communication, a novel planar structure-shared diverse two-port ultrawideband (UWB) antenna with high isolation and common ground is proposed based on a new slot-loaded method. A tapered slot with an end-fire radiation pattern is etched in the top middle section of a coplanar waveguide (CPW)-fed printed monopole antenna to reduce its effects on the monopole mode. The two-port UWB antenna features diverse patterns which can fully cover the upper space. A nonuniformly symmetric-coupled coplanar waveguide (NSC-CPW) is introduced to enable the two sets of the feeding structures sharing a ground plane with minimum interaction. Due to the modal orthogonality, high isolation between the two ports is obtained without additional decoupling structures. The experimental results of the proposed multiple-input multiple-output (MIMO) antenna indicate that the isolation is higher than 31.4 dB and the diversity gain is approximately 10 dB within a wide frequency range from 2.98 to 10 GHz. Meanwhile, high realized peak gain (>2.5 dB) and good efficiency (>80%) are also obtained for both the ports.

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author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
High isolation, pattern diversity, two-port multiple-input multiple-output (MIMO), ultrawideband (UWB) antenna
in
IEEE Transactions on Antennas and Propagation
volume
68
issue
12
article number
9106833
pages
6 pages
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • scopus:85098151280
ISSN
0018-926X
DOI
10.1109/TAP.2020.2997461
language
English
LU publication?
yes
id
0203f530-d123-4f2e-81bc-23b2096d026d
date added to LUP
2021-01-07 13:40:16
date last changed
2022-04-26 23:08:35
@article{0203f530-d123-4f2e-81bc-23b2096d026d,
  abstract     = {{<p>In this communication, a novel planar structure-shared diverse two-port ultrawideband (UWB) antenna with high isolation and common ground is proposed based on a new slot-loaded method. A tapered slot with an end-fire radiation pattern is etched in the top middle section of a coplanar waveguide (CPW)-fed printed monopole antenna to reduce its effects on the monopole mode. The two-port UWB antenna features diverse patterns which can fully cover the upper space. A nonuniformly symmetric-coupled coplanar waveguide (NSC-CPW) is introduced to enable the two sets of the feeding structures sharing a ground plane with minimum interaction. Due to the modal orthogonality, high isolation between the two ports is obtained without additional decoupling structures. The experimental results of the proposed multiple-input multiple-output (MIMO) antenna indicate that the isolation is higher than 31.4 dB and the diversity gain is approximately 10 dB within a wide frequency range from 2.98 to 10 GHz. Meanwhile, high realized peak gain (&gt;2.5 dB) and good efficiency (&gt;80%) are also obtained for both the ports.</p>}},
  author       = {{Nie, Li Ying and Lin, Xian Qi and Xiang, Shang and Wang, Bao and Xiao, Long and Ye, Jun Yong}},
  issn         = {{0018-926X}},
  keywords     = {{High isolation; pattern diversity; two-port multiple-input multiple-output (MIMO); ultrawideband (UWB) antenna}},
  language     = {{eng}},
  number       = {{12}},
  pages        = {{8186--8191}},
  publisher    = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
  series       = {{IEEE Transactions on Antennas and Propagation}},
  title        = {{High-Isolation Two-Port UWB Antenna Based on Shared Structure}},
  url          = {{http://dx.doi.org/10.1109/TAP.2020.2997461}},
  doi          = {{10.1109/TAP.2020.2997461}},
  volume       = {{68}},
  year         = {{2020}},
}