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A Wideband Co-Linearly Polarized Composite Antenna with High Isolation

Gao, Ruo Bin ; Nie, Li Ying ; Cheng, Fei ; Jiang, Zhao Neng ; Zhang, Xiao Hui and Xiang, Shang LU (2023) In IEEE Antennas and Wireless Propagation Letters p.1-5
Abstract

In this paper, a high-isolation two-port co-linearly polarized (co-LP) composite antenna is proposed. Dipole and W8JK array modes with co-LP omnidirectional patterns can be simultaneously supported by a plate with two etched back-to-back tapered slots. A microstrip differential and a T-divider coupling feeding networks are developed to selectively excite the dipole and W8JK modes, which results in a high isolation and low correlation between two co-LP ports without using any decoupling structures. Reflecting ground is applied to realize the directional radiation. Measurement results show that the overlapped operating band of the antenna can cover 3.4 - 4.1 GHz with low measured envelope correlation coefficients (< 2.5... (More)

In this paper, a high-isolation two-port co-linearly polarized (co-LP) composite antenna is proposed. Dipole and W8JK array modes with co-LP omnidirectional patterns can be simultaneously supported by a plate with two etched back-to-back tapered slots. A microstrip differential and a T-divider coupling feeding networks are developed to selectively excite the dipole and W8JK modes, which results in a high isolation and low correlation between two co-LP ports without using any decoupling structures. Reflecting ground is applied to realize the directional radiation. Measurement results show that the overlapped operating band of the antenna can cover 3.4 - 4.1 GHz with low measured envelope correlation coefficients (< 2.5 × 10-3) and high isolation (> 20 dB). Dual-polarized four-port element with good performances can be easily obtained based on the proposed co-LP antenna. The simulated results of the four-port prototype indicate that the proposed antenna is a promising candidate for the future compact massive MIMO array antenna.

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author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
in press
subject
keywords
Antenna arrays, Antenna measurements, Antennas, Co-polarized, composite, Dipole antennas, Frequency measurement, Gain, high isolation, multiple-input-multiple-output (MIMO), Scattering parameters
in
IEEE Antennas and Wireless Propagation Letters
pages
5 pages
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • scopus:85176325598
ISSN
1536-1225
DOI
10.1109/LAWP.2023.3326542
language
English
LU publication?
yes
additional info
Publisher Copyright: IEEE
id
2d859a2e-1224-4b15-9029-6511db7d1e3b
date added to LUP
2024-01-10 13:39:39
date last changed
2024-01-10 13:39:39
@article{2d859a2e-1224-4b15-9029-6511db7d1e3b,
  abstract     = {{<p>In this paper, a high-isolation two-port co-linearly polarized (co-LP) composite antenna is proposed. Dipole and W8JK array modes with co-LP omnidirectional patterns can be simultaneously supported by a plate with two etched back-to-back tapered slots. A microstrip differential and a T-divider coupling feeding networks are developed to selectively excite the dipole and W8JK modes, which results in a high isolation and low correlation between two co-LP ports without using any decoupling structures. Reflecting ground is applied to realize the directional radiation. Measurement results show that the overlapped operating band of the antenna can cover 3.4 - 4.1 GHz with low measured envelope correlation coefficients (&amp;lt; 2.5 &amp;#x00D7; 10<sup>-3</sup>) and high isolation (&amp;gt; 20 dB). Dual-polarized four-port element with good performances can be easily obtained based on the proposed co-LP antenna. The simulated results of the four-port prototype indicate that the proposed antenna is a promising candidate for the future compact massive MIMO array antenna.</p>}},
  author       = {{Gao, Ruo Bin and Nie, Li Ying and Cheng, Fei and Jiang, Zhao Neng and Zhang, Xiao Hui and Xiang, Shang}},
  issn         = {{1536-1225}},
  keywords     = {{Antenna arrays; Antenna measurements; Antennas; Co-polarized; composite; Dipole antennas; Frequency measurement; Gain; high isolation; multiple-input-multiple-output (MIMO); Scattering parameters}},
  language     = {{eng}},
  pages        = {{1--5}},
  publisher    = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
  series       = {{IEEE Antennas and Wireless Propagation Letters}},
  title        = {{A Wideband Co-Linearly Polarized Composite Antenna with High Isolation}},
  url          = {{http://dx.doi.org/10.1109/LAWP.2023.3326542}},
  doi          = {{10.1109/LAWP.2023.3326542}},
  year         = {{2023}},
}