Paper Abstract and Keywords |
Presentation |
Multifunctional Metasurface-Based Antenna with Contrary Beam Operations Tanan Hongnara, Sarawuth Chaimool, Prayoot Akkaraekthalin (KMUTNB) |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
In this paper, multifunctional metasurface-based antenna with contrary beam operations at different operating frequencies is proposed. The proposed antenna is composed of two main parts. The first is metasurface which is produced by the combination between fractal mesh and patch type resonators. The scattering parameters of metasurface under the investigation of plane wave excitation are transmissive type dominantly that the resonant frequency is obtained at 2.11 GHz. Meanwhile, this metasurface performs different characteristics in the retrieved effective permittivity and permeability parameters. In the band slightly below the resonance, the metasurface can provide the property of epsilon negative material (ENG). Then, it exhibits mu-near-zero property in the higher band. With these distinct features, we intentionally design the second main part as the printed dipole antenna to operate over those distinct property bands. The technique of antenna is to employ the shorter and longer radiating arms for the desired higher and lower operating frequencies, respectively. In addition, both structure of metasurface and dipole antenna are all designed on FR-4 substrate with the dielectric constant of 4.3 and loss tangent of 0.019.
By properly placing metasurface close to dipole antenna, the proposed antenna performs contrary beam operation at different frequencies of 1.65 and 2.60 GHz. It is impressively highlighted that this antenna design did not use full ground plane reflector to generate these contrary unidirectional beams. At the lower frequency of 1.65 GHz, the metasurface with ENG property acts as a reflective function to dipole antenna that the main antenna beam is pointed on ?z direction. Vice versa, the metasurface with MNZ property at 2.60 GHz shows a directive function which directly affects to generate the radiated beam on +z direction in the proposed antenna. The simulation and measurement results are agreed well in the input impedance and 2D radiation pattern of antenna. Moreover, the antenna has a compact dimension with the whole antenna system thickness of 0.15λ0, even at the higher operating frequency. This antenna concept is suitable for any wireless system in which two environment areas are connected with different operating frequencies. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Multifunctional Antenna / Metasurface / Epsilon Negative (ENG) / Mu-Near-Zero (MNZ) / / / / |
Reference Info. |
IEICE Tech. Rep. |
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Conference Information |
Committee |
MW |
Conference Date |
2018-06-27 - 2018-06-29 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
KMITL, Bangkok, Thailand |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
2018 Thailand-Japan MicroWave (TJMW2018) |
Paper Information |
Registration To |
MW |
Conference Code |
2018-06-MW |
Language |
English |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Multifunctional Metasurface-Based Antenna with Contrary Beam Operations |
Sub Title (in English) |
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Keyword(1) |
Multifunctional Antenna |
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Metasurface |
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Epsilon Negative (ENG) |
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Mu-Near-Zero (MNZ) |
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1st Author's Name |
Tanan Hongnara |
1st Author's Affiliation |
King Mongkut?s University of Technology North Bangkok (KMUTNB) |
2nd Author's Name |
Sarawuth Chaimool |
2nd Author's Affiliation |
King Mongkut?s University of Technology North Bangkok (KMUTNB) |
3rd Author's Name |
Prayoot Akkaraekthalin |
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King Mongkut?s University of Technology North Bangkok (KMUTNB) |
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