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In this paper, we have simulated the dielectric rod antenna by using CST microwave studio which is commercially available simulator based on finite integral technique for satellite communication system. We emphasize particularly, on the gain of the proposed antenna at two frequencies that is from 25GHz to 35 GHz. The radiation mechanism of the dielectric rod antenna is based on the discontinuity radiation...
In this paper, the effects of 2-D photonic crystal substrate on the performance of a rectangular microstrip patch antenna at terahertz frequency (0.4-0.8THz) has been investigated. The photonic substrate has been used to enhance the gain and radiation efficiency of the proposed antenna. The gain and radiation efficiency of this antenna at 600 GHz is about 13dB and 83.02%, respectively. This antenna...
In this paper, a dielectric slab with the periodic implantation of the air gap in the host passive substrate material has been analyzed. The effective permittivity of the photonic crystal with host material PTFE at 600 GHz has been extracted with the help of robust method to retrieve the constitutive effective parameters of the metamaterials. Based on the extracted effective permittivity, a rectangular...
In this paper improved performance microstrip square patch antenna at terahertz frequency range has been analyzed. The antenna has been designed to radiate at any frequency point in the frequency band of 0.5 to 0.7 THz with high gain and radiation efficiency. The effect of various parameters of substrate on radiating patch has been investigated. Gain and radiation efficiency of 21.87 dB and 94.45%...
In this paper, an effective dielectric permittivity and losses of two-layer substrate for rectangular microstrip patch antenna at THz frequency has been analyzed and simulated in the terahertz frequency regime surveillance system. The proposed antenna has been optimized at 600 GHz frequency by CST Microwave Studio a commercially available simulator based on finite integral technique. To validate the...
In this paper, the concept to enhanced directivity of a electrically small subwavelength radiator containing plasmonic materials with negative permittivity at THz, infrared and optical frequencies have been explored theoretically. We study plasmonic resonances of a subwavelength core-shell spherical nanoantenna and simulate the far-field radiation patterns of such a structure when it is excited by...
The effect of multilayer, 2-D photonic band gap substrate on the performance of rectangular microstrip patch antenna at THz frequency is simulated. The radiation efficiency, gain and directivity for the proposed antennas are 93.28%, 10.46 dB and 10.76 dBi, respectively at 875 GHz. The 10 dB impedance bandwidth of the antenna is 36.67%, which is ultra-wide bandwidth. The simulation has been performed...
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