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The challenge of surface wave excitation and propagation to millimeter-wave (mm-wave) antennas of future fifth-generation (5G) cellular system is addressed in this paper. This paper presents three different schemes by simulation, including mushroom-like electromagnetic band-gap (EBG) structures, cross-shaped resonant structures and T-shaped wave trap structures, to suppress surface wave propagation...
This paper proposes the design of a novel beam reconfigurable antenna operating at 500GHz. Such antenna is based on single-layer-graphene patches with tunable electrical conductivity. Three groups of graphene patches play a key role for achieving directivity such as for the Yagi-Uda antenna. The conductivity of each graphene patch can be dynamically controlled by the DC biasing voltage. Numerical...
One novel graphene-based high-impedance surface (HIS) is proposed in this paper. It utilizes the metal patches to reduce the loss effect, and the graphene patches to alter the reflection phase of the HIS. By using such HIS, a 2-D THz Fabry-Perot antenna is designed and investigated. It is shown that by adjusting the graphene conductivity, both the resonance and beam direction of 2-D THz Fabry-Perot...
A method of moments solution to the radiation and scattering problem of wire antennas mounted on complex conducting objects is presented. Curvilinear triangular patches are chosen to discretize the surface of the objects and curvilinear Rao-Wilton-Glisson (RWG) basis function has been used to model the surface current. The pulse and linear Costa basis functions defined on planar geometry is used to...
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