Coupled Eighth-Mode Substrate Integrated Waveguide Antenna: Small and Wideband With High-Body Antenna Isolation
A novel antenna design for wideband operation is presented, consisting of a system of two coupled miniaturized eighth-mode resonant radiating cavities with a low-complexity feeding network. The design methodology relies on the virtual magnetic boundaries along the symmetry planes of a rectangular wa...
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doaj-24265ea00c394413a24663d74f1daefe2021-03-29T20:34:21ZengIEEEIEEE Access2169-35362018-01-0161595160210.1109/ACCESS.2017.27795638170210Coupled Eighth-Mode Substrate Integrated Waveguide Antenna: Small and Wideband With High-Body Antenna IsolationSam Agneessens0https://orcid.org/0000-0003-4783-4304Department of Information Technology, IDLab, Ghent University-imec, Ghent, BelgiumA novel antenna design for wideband operation is presented, consisting of a system of two coupled miniaturized eighth-mode resonant radiating cavities with a low-complexity feeding network. The design methodology relies on the virtual magnetic boundaries along the symmetry planes of a rectangular waveguide resonator, for size reduction, and the frequency bifurcation of two tightly coupled resonators, for bandwidth enhancement. After discussing its operating principle, a prototype targeting wearable applications is designed, manufactured, and validated. Multiband operation is achieved with simultaneous coverage of the 2.4-GHz ISM band and the LTE-7 upand downlink-bands. Measurements in free-space and on-body scenarios validate the antenna's performance. A bandwidth of 414 MHz (16.2%) is measured, as well as a maximal gain of 4.7 dBi. The directive patch-like radiation pattern and the ground plane topology lead to high body-antenna isolation and good on-body performance. Impedance bandwidth and radiation pattern remain stable when the antenna is worn by a person and bent around a cylinder to mimic deformation.https://ieeexplore.ieee.org/document/8170210/Antennassubstrate integrated waveguide (SIW)wearable antennatextile antennahalf-mode substrate integrated waveguide (HMSIW)eighth-mode substrate integrated waveguide (EMSIW) |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Sam Agneessens |
spellingShingle |
Sam Agneessens Coupled Eighth-Mode Substrate Integrated Waveguide Antenna: Small and Wideband With High-Body Antenna Isolation IEEE Access Antennas substrate integrated waveguide (SIW) wearable antenna textile antenna half-mode substrate integrated waveguide (HMSIW) eighth-mode substrate integrated waveguide (EMSIW) |
author_facet |
Sam Agneessens |
author_sort |
Sam Agneessens |
title |
Coupled Eighth-Mode Substrate Integrated Waveguide Antenna: Small and Wideband With High-Body Antenna Isolation |
title_short |
Coupled Eighth-Mode Substrate Integrated Waveguide Antenna: Small and Wideband With High-Body Antenna Isolation |
title_full |
Coupled Eighth-Mode Substrate Integrated Waveguide Antenna: Small and Wideband With High-Body Antenna Isolation |
title_fullStr |
Coupled Eighth-Mode Substrate Integrated Waveguide Antenna: Small and Wideband With High-Body Antenna Isolation |
title_full_unstemmed |
Coupled Eighth-Mode Substrate Integrated Waveguide Antenna: Small and Wideband With High-Body Antenna Isolation |
title_sort |
coupled eighth-mode substrate integrated waveguide antenna: small and wideband with high-body antenna isolation |
publisher |
IEEE |
series |
IEEE Access |
issn |
2169-3536 |
publishDate |
2018-01-01 |
description |
A novel antenna design for wideband operation is presented, consisting of a system of two coupled miniaturized eighth-mode resonant radiating cavities with a low-complexity feeding network. The design methodology relies on the virtual magnetic boundaries along the symmetry planes of a rectangular waveguide resonator, for size reduction, and the frequency bifurcation of two tightly coupled resonators, for bandwidth enhancement. After discussing its operating principle, a prototype targeting wearable applications is designed, manufactured, and validated. Multiband operation is achieved with simultaneous coverage of the 2.4-GHz ISM band and the LTE-7 upand downlink-bands. Measurements in free-space and on-body scenarios validate the antenna's performance. A bandwidth of 414 MHz (16.2%) is measured, as well as a maximal gain of 4.7 dBi. The directive patch-like radiation pattern and the ground plane topology lead to high body-antenna isolation and good on-body performance. Impedance bandwidth and radiation pattern remain stable when the antenna is worn by a person and bent around a cylinder to mimic deformation. |
topic |
Antennas substrate integrated waveguide (SIW) wearable antenna textile antenna half-mode substrate integrated waveguide (HMSIW) eighth-mode substrate integrated waveguide (EMSIW) |
url |
https://ieeexplore.ieee.org/document/8170210/ |
work_keys_str_mv |
AT samagneessens coupledeighthmodesubstrateintegratedwaveguideantennasmallandwidebandwithhighbodyantennaisolation |
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