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A Wideband Dual-polarized Inductor-end Slot Antenna with Stable-beamwidth

Zhou, Changfei LU ; Wong, Hang and Yeung , Lawrence Kwan (2018) In IEEE Antennas and Wireless Propagation Letters 17(4). p.608-612
Abstract
This letter presents a wideband cross-slot antenna (CSA) with inductor loadings for dual polarization. The effects of the ground size on the impedance are investigated. To achieve a compact size, a very small ground having the same hypotenuse length as the slot is used. The inductor loadings are used at both ends of the slot to reduce the size further. Simulated results show that the loaded inductors contribute to a more constant impedance to the frequency response at 1-λ mode, and the impedance moves toward the lower frequency with inductors. Based on the constant impedance of the inductor-end slot at 1-λ mode, a dual-polarized CSA using two orthogonal slot radiators is designed. Measured results show that the proposed dual-polarized... (More)
This letter presents a wideband cross-slot antenna (CSA) with inductor loadings for dual polarization. The effects of the ground size on the impedance are investigated. To achieve a compact size, a very small ground having the same hypotenuse length as the slot is used. The inductor loadings are used at both ends of the slot to reduce the size further. Simulated results show that the loaded inductors contribute to a more constant impedance to the frequency response at 1-λ mode, and the impedance moves toward the lower frequency with inductors. Based on the constant impedance of the inductor-end slot at 1-λ mode, a dual-polarized CSA using two orthogonal slot radiators is designed. Measured results show that the proposed dual-polarized antenna has wide impedance bandwidths of 56.2% from 1.56 to 2.78 GHz and 60.6% from 1.46 to 2.73 GHz for Ports 1 and 2, respectively, with a high isolation of more than 26 dB over the operating bandwidth. The antenna also has a stable broadside gain of 8.05 ± 0.45 dBi and stable half-power beamwidths of 60.5° ± 1.8° in the E-plane and 76.1° ± 1.5° in the H-plane for Port 1. (Less)
Please use this url to cite or link to this publication:
author
publishing date
type
Contribution to journal
publication status
published
subject
in
IEEE Antennas and Wireless Propagation Letters
volume
17
issue
4
pages
608 - 612
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • scopus:85042078375
ISSN
1548-5757
DOI
10.1109/LAWP.2018.2805827
language
English
LU publication?
no
id
9a199bf9-0ee9-451d-ba80-a05229fe6579
date added to LUP
2018-04-06 14:59:09
date last changed
2019-05-21 04:03:10
@article{9a199bf9-0ee9-451d-ba80-a05229fe6579,
  abstract     = {This letter presents a wideband cross-slot antenna (CSA) with inductor loadings for dual polarization. The effects of the ground size on the impedance are investigated. To achieve a compact size, a very small ground having the same hypotenuse length as the slot is used. The inductor loadings are used at both ends of the slot to reduce the size further. Simulated results show that the loaded inductors contribute to a more constant impedance to the frequency response at 1-λ mode, and the impedance moves toward the lower frequency with inductors. Based on the constant impedance of the inductor-end slot at 1-λ mode, a dual-polarized CSA using two orthogonal slot radiators is designed. Measured results show that the proposed dual-polarized antenna has wide impedance bandwidths of 56.2% from 1.56 to 2.78 GHz and 60.6% from 1.46 to 2.73 GHz for Ports 1 and 2, respectively, with a high isolation of more than 26 dB over the operating bandwidth. The antenna also has a stable broadside gain of 8.05 ± 0.45 dBi and stable half-power beamwidths of 60.5° ± 1.8° in the E-plane and 76.1° ± 1.5° in the H-plane for Port 1.},
  author       = {Zhou, Changfei and Wong, Hang and Yeung , Lawrence Kwan },
  issn         = {1548-5757},
  language     = {eng},
  number       = {4},
  pages        = {608--612},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Antennas and Wireless Propagation Letters},
  title        = {A Wideband Dual-polarized Inductor-end Slot Antenna with Stable-beamwidth},
  url          = {http://dx.doi.org/10.1109/LAWP.2018.2805827},
  volume       = {17},
  year         = {2018},
}