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A Photonic Bandgap Filter Using Metallic Hilbert Curves |
| LI Hong-Qiang;WEI Ze-Yong;CHEN Hong;ZHANG Ye-Wen |
| Department of Physics, Tongji University, Shanghai 200092 |
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| Cite this article: |
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LI Hong-Qiang, WEI Ze-Yong, CHEN Hong et al 2005 Chin. Phys. Lett. 22 1439-1442 |
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Abstract We theoretically suggest that a metallic plate with Hilbert curves can possesses multiple resonances in a linear scale, leading to multiple stop bands and pass bands for electromagnetic waves over a wide frequency range. The forward transmission from a line source nearby a small plate covered by four cells with Hilbert curves is checked by a probe at the far field, the results agree well with the multiple resonance frequencies calculated by the plane wave incidence under a periodic boundary condition, the return loss spectra show that radiations of a line antenna working at 4.5GHz can be greatly enhanced, which results from the interaction of the antenna and the subwavelength metallic plate. This kind of metallic pattern is very practical in multi-frequency functioned wave devices with sub-wavelength sizes.
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| Keywords:
42.70.Qs
78.20.Ci
41.20.Jb
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Published: 01 June 2005
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| PACS: |
42.70.Qs
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(Photonic bandgap materials)
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78.20.Ci
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(Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))
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41.20.Jb
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(Electromagnetic wave propagation; radiowave propagation)
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