High-Isolation Two-Port UWB Antenna Based on Shared Structure
(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.
(Less)
- author
- Nie, Li Ying ; Lin, Xian Qi ; Xiang, Shang LU ; Wang, Bao ; Xiao, Long and Ye, Jun Yong
- organization
- publishing date
- 2020
- 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 (>2.5 dB) and good efficiency (>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}}, }