A waveguide slit array antenna fabricated with subwavelength periodic grooves
- 1 October 2007
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 91 (14) , 143512
Abstract
This paper presents a waveguide slit array antenna with high gain and narrow beamwidth. This antenna is formed by subwavelength slits surrounded with periodic grooves. The far field radiation characteristics of the improved antenna are investigated. Simulation results show that the gain of the antenna with a designed working frequency is improved by 11dB and a strong beam can be obtained. The physical mechanism for the performance improvement is governed by the resonance excitation of surface electromagnetic waves and can be well described by the coherent superposition of power radiated from the grooves and central slits.Keywords
This publication has 12 references indexed in Scilit:
- Plasmonic structures with extraordinary transmission and highly directional beaming propertiesMicrowave and Optical Technology Letters, 2006
- Surface electromagnetic wave excitation and diffraction by subwavelength slit with periodically patterned metallic groovesOptics Express, 2006
- Very low-profile "Bull's Eye" feeder antennaIEEE Antennas and Wireless Propagation Letters, 2005
- Enhanced transmission of microwave radiation in one-dimensional metallic gratings with subwavelength apertureApplied Physics Letters, 2004
- Surface-topography-induced enhanced transmission and directivity of microwave radiation through a subwavelength circular metal apertureApplied Physics Letters, 2004
- Multiple Paths to Enhance Optical Transmission through a Single Subwavelength SlitPhysical Review Letters, 2003
- Theory of Highly Directional Emission from a Single Subwavelength Aperture Surrounded by Surface CorrugationsPhysical Review Letters, 2003
- Beaming Light from a Subwavelength ApertureScience, 2002
- Enhanced light transmission through a single subwavelength apertureOptics Letters, 2001
- Theory of Diffraction by Small HolesPhysical Review B, 1944