| A novel modelling technology for FSS on curved surface using FDTD algorithm is proposed inthis thesis. On the basis of the FSS modelling technology, a RCS calculation software for FSS oncurved surface of radome is programmed and realized. The results using the software validate thecorrectness and feasibility of the modelling technology and the RCS calculation. Besides how thesubstrate and cascading affect FSS and the FSS used in Energy-Saving Glass are simulated andanalyzed. This thesis is summarized as follows:(1) On account of the FSS application in radome, a novel modelling technology for FSS on curvedsurface using FDTD algorithm is proposed; also the formula derivation in the rectangularcoordinate system is presented, including the cylinder, cone and sphere. The modelling results ofdifferent shape of FSSs on different curved surfaces validate the correctness of the modellingtechnology.(2) On the basis of the the FSS modelling, a RCS calculation software for the bandpass radomeusing FSS is developed. The RCS results of the cylinder radome loading with different FSSs areanalyzed and verified using the developed software.(3) The OpenMP parallel calculation technology is adopted in the software, so the computing speedis effectively improved and the software is applicable to the multi-core workstations. Besides theGTK technology in Linux system is used in the software interface development, and a goodman-machine interface is realized.(4) Considering the FSS application in Energy-Saving Glass, three different kinds of FSSs aredesigned and simulated. First while maintaining thermal insulation of the energy-saving glass,the designed FSS can improve the signal transmission of energy-saving glass between900MHz-2000MHz. Second, the Energy-Saving Glass using designed FSS has a good barriereffect for the2.45GHz-5.25GHz band wireless signal and guarantees the security of indoorwireless communications of this band. Third, the designed FSS elements have a good stability ofpolarization and angle. |
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