Fractal-Shaped Metamaterials and Applications to Enhanced-Performance Devices Exhibiting High Selectivity
Novel single negative metamaterial (MTM) transmission lines (TLs) are presented and studied in microstrip technology. They consist of a host TL in the conductor strip and a fractal-shaped complementary rin...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2012/515167 |
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| author | He-Xiu Xu Guang-Ming Wang Chen-Xin Zhang |
| author_facet | He-Xiu Xu Guang-Ming Wang Chen-Xin Zhang |
| author_sort | He-Xiu Xu |
| collection | DOAJ |
| description | Novel single
negative metamaterial (MTM) transmission lines
(TLs) are presented and studied in microstrip
technology. They consist of a host TL in the
conductor strip and a fractal-shaped
complementary ring resonator (CRR) etched in the
ground plane. Two types of fractal-shaped CRR
are involved including the Moore and Hilbert. It
is found that fractal perturbation in CRR
results in lower and more transmission zeros in
comparison with conventional CRR using
nonfractal geometries. The single
negative-permeability or -permittivity of these
MTM TLs which associated with the resultant
multitransmission zeros occurs by turns and
should benefit devices with high selectivity
requirement. Potential application of these MTM
cells are illustrated by two examples, one is
the microstrip stepped-impedance transformers
(SIT) operating at 3.5 GHz with two edged
attenuation poles to introduce selectivity; the
other one is the Hi-Lo microstrip low-pass
filter (LPF) with cutoff frequency
2.5 GHz exhibiting improved selectivity
(77.3 dB/GHz). By constructing the low-impedance sections as hybrid prefractal shape
and crown square, both the SITs and LPF obtained
additional bandwidth enhancement and good
matching. Consistent results between simulation
and measurement have confirmed the design
concept. |
| format | Article |
| id | doaj-art-9ad0ef7e598c44ffaa1f123e904fdc5e |
| institution | Kabale University |
| issn | 1687-5869 1687-5877 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-9ad0ef7e598c44ffaa1f123e904fdc5e2025-02-03T01:21:35ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772012-01-01201210.1155/2012/515167515167Fractal-Shaped Metamaterials and Applications to Enhanced-Performance Devices Exhibiting High SelectivityHe-Xiu Xu0Guang-Ming Wang1Chen-Xin Zhang2Department of Electromagnetic Field and Microwave Technique, Missile Institute of Air Force Engineering University, 713800 Sanyuan, ChinaDepartment of Electromagnetic Field and Microwave Technique, Missile Institute of Air Force Engineering University, 713800 Sanyuan, ChinaDepartment of Electromagnetic Field and Microwave Technique, Missile Institute of Air Force Engineering University, 713800 Sanyuan, ChinaNovel single negative metamaterial (MTM) transmission lines (TLs) are presented and studied in microstrip technology. They consist of a host TL in the conductor strip and a fractal-shaped complementary ring resonator (CRR) etched in the ground plane. Two types of fractal-shaped CRR are involved including the Moore and Hilbert. It is found that fractal perturbation in CRR results in lower and more transmission zeros in comparison with conventional CRR using nonfractal geometries. The single negative-permeability or -permittivity of these MTM TLs which associated with the resultant multitransmission zeros occurs by turns and should benefit devices with high selectivity requirement. Potential application of these MTM cells are illustrated by two examples, one is the microstrip stepped-impedance transformers (SIT) operating at 3.5 GHz with two edged attenuation poles to introduce selectivity; the other one is the Hi-Lo microstrip low-pass filter (LPF) with cutoff frequency 2.5 GHz exhibiting improved selectivity (77.3 dB/GHz). By constructing the low-impedance sections as hybrid prefractal shape and crown square, both the SITs and LPF obtained additional bandwidth enhancement and good matching. Consistent results between simulation and measurement have confirmed the design concept.http://dx.doi.org/10.1155/2012/515167 |
| spellingShingle | He-Xiu Xu Guang-Ming Wang Chen-Xin Zhang Fractal-Shaped Metamaterials and Applications to Enhanced-Performance Devices Exhibiting High Selectivity International Journal of Antennas and Propagation |
| title | Fractal-Shaped Metamaterials and Applications to Enhanced-Performance Devices Exhibiting High Selectivity |
| title_full | Fractal-Shaped Metamaterials and Applications to Enhanced-Performance Devices Exhibiting High Selectivity |
| title_fullStr | Fractal-Shaped Metamaterials and Applications to Enhanced-Performance Devices Exhibiting High Selectivity |
| title_full_unstemmed | Fractal-Shaped Metamaterials and Applications to Enhanced-Performance Devices Exhibiting High Selectivity |
| title_short | Fractal-Shaped Metamaterials and Applications to Enhanced-Performance Devices Exhibiting High Selectivity |
| title_sort | fractal shaped metamaterials and applications to enhanced performance devices exhibiting high selectivity |
| url | http://dx.doi.org/10.1155/2012/515167 |
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