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Oblique incidence of a plane wave on an inhomogeneously loaded grating of slots in a screen
- Source :
- Journal of Applied Physics. 125:225305
- Publication Year :
- 2019
- Publisher :
- AIP Publishing, 2019.
-
Abstract
- In this paper, we demonstrate a new method to control the enhanced transmission due to Fabry–Perot resonances through an array of dielectric-loaded slots in a thick metallic screen. We obtain approximate analytical formulas for each polarization (TM and TE) using a mode-matching technique based on the assumption that the slots are small compared to a free-space wavelength and that the metallic screen is a perfect electric conductor as is appropriate for microwave frequency applications. We show that the bandwidth and locations of enhanced transmission can be controlled by the angle of incidence or by making the material filling the slots inhomogeneous. Computational results are given that demonstrate the influence of the angle of incidence on the enhanced transmission bandwidth. We show that the separation between enhanced transmission frequencies can be controlled by introducing a gap within the slot with a different dielectric constant. Also, we illustrate how the total transmission bandwidth can be increased by adjusting the angle of incidence and the gap size.In this paper, we demonstrate a new method to control the enhanced transmission due to Fabry–Perot resonances through an array of dielectric-loaded slots in a thick metallic screen. We obtain approximate analytical formulas for each polarization (TM and TE) using a mode-matching technique based on the assumption that the slots are small compared to a free-space wavelength and that the metallic screen is a perfect electric conductor as is appropriate for microwave frequency applications. We show that the bandwidth and locations of enhanced transmission can be controlled by the angle of incidence or by making the material filling the slots inhomogeneous. Computational results are given that demonstrate the influence of the angle of incidence on the enhanced transmission bandwidth. We show that the separation between enhanced transmission frequencies can be controlled by introducing a gap within the slot with a different dielectric constant. Also, we illustrate how the total transmission bandwidth can be inc...
- Subjects :
- 010302 applied physics
Materials science
business.industry
Bandwidth (signal processing)
Plane wave
Physics::Optics
General Physics and Astronomy
02 engineering and technology
Dielectric
Grating
021001 nanoscience & nanotechnology
Polarization (waves)
01 natural sciences
Wavelength
Optics
0103 physical sciences
Oblique incidence
Perfect conductor
0210 nano-technology
business
Subjects
Details
- ISSN :
- 10897550 and 00218979
- Volume :
- 125
- Database :
- OpenAIRE
- Journal :
- Journal of Applied Physics
- Accession number :
- edsair.doi...........6cfe613d93b1e7db076280bc548418a2