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In this paper, a novel wide-band frequency selective surface (FSS) based on double-layered hexagonal units is described. The proposed FSS has better wideband performance of 23.6% compared with previous designs. The operating frequency at 12.5 GHz for the application of radome in X-band is obtained by optimizing the coupling of the two layers respectively. In order to improve the broadband performance,...
In this literature, a force generator based on plasmonic metamaterial in terhaertz band is presented. An SPP-like (Surface Plasmon Polariton) field trapping can be obtained and this field trapping leads to a enhanced field density and a large force. To excite SPP in terahertz band, the semiconductor(InSb) is utilized to obatain a lower plasmonic frequency so that SPP phenomenon can take place at the...
A novel circularly polarized array antenna based on substrate integrated waveguide (SIW) is presented in this paper. The array element, a circularly polarized radiator, consists of two 45° inclined radiating slots. Its feeding port is very simple. The axial ratio in the main beam direction is less than 3dB. And the gain of one unit cell is around 4dBi. To increase the gain, antenna array is used....
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