On the Transmitted Beam Degradation through FSS in the Working Band by Plane-wave Spectrum Computation and Evaluation
关键词:
Beam transmission, frequency selective surfaces, plane-wave spectrum, quasi optical instruments摘要
In this paper, we implemented the combination of FDTD (Finite Difference Time Domain) and the plane-wave spectrum (PWS) algorithms, to evaluate beam transmission through frequency selective surface (FSS) in the near field region. The hybrid method takes advantage of the FDTD for the wideband analysis ability, and that of the PWS theory in the rapid recomposition for transmitted fields due to variable beam incidence. Consequently, it meets the need of beam transmission evaluation in the working band when the FSS is located among a serial of components, as in a millimeter Quasi-Optical (QO) instrument. After verifying the hybrid approach by results of other methods, we studied the degradations in the transmitted beams through an FSS design within the band of interest. The investigations are performed at the view of the transmission coefficient distributions in the PWS. It is found that the transmitted beam distortion is due to the non-flatness of the transmission coefficient distribution in the spectrum region covered by the beam incidence.
##plugins.generic.usageStats.downloads##
参考
R. Mittra, C. Chan, and T. Cwik, “Techniques for analyzing frequency selective surfaces: A review,” IEEE Proceedings, vol. 76, pp. 1593-1615, 1988.
J. Roden, S. Gedney, M. Kesler, J. Maloney, and P. Harms, “Time domain analysis of periodic structures at oblique incident: Orthogonal and nonorthogonal FDTD implementations,” IEEE Trans. Microwave theory Tech., vol. 46, no. 4, pp. 420-427, 1998.
F. Yang, J. Chen, R. Qiang, and A. Elsherbeni, “A simple and efficient FDTD/PBC algorithm for scattering analysis of periodic structures,” Radio Science, vol. 42, RS4004, 2007.
K. ElMahgoub, F. Yang, A. Z. Elsherbeni, V. Demir, and J. Chen, “FDTD analysis of periodic structures with arbitrary skewed grid,” IEEE Trans. Antennas Propagat., vol. 58, no. 8, pp. 2649-2658, 2010.
M. Bai, B. Liang, and H. Ma, “An efficient FDTD algorithm to analyze skewed periodic structures impinged by obliquely incident wave,” Journal of the Applied Computational Electromagnetic Society, vol. 30, no. 10, pp. 1068-1073, 2015.
M. Pasian, M. Bozzi, and L. Perregrini, “Accurate modeling of dichroic mirrors in beam-waveguide antennas,” IEEE Trans. Antennas Propagat., vol. 61, no. 4, pp. 1931-1938, 2013.
V. Prakash, N. T. Huang, and R. Mittra, “Accurate analysis of interaction between microwave antennas and frequency selective surface (FSS) radomes,” ICAP 2003, vol. 1, pp. 401-404, March 31-April 3, 2003.
M. Jin, M. Bai, N. Ou, and J. Miao, “The planewave approach for beam transmission through planar FSS structures,” ICMMT 2012, IEEE International, pp. 128-131, May 2012.
M. Bai, M. Jin, N. Ou, and J. Miao, “On scattering from an array of absorptive material coated cones by the PWS approach,” IEEE Trans. Antennas Propagat., vol. 61, no. 6, pp. 3216-3224, 2013.
P. Goldsmith, Quasi-optical Systems: Gaussian Beam Quasi-optical Propagation and Applications. Piscataway, NJ, IEEE Press, 1998.
R. Martin and D. Martin, “Quasi-optical antennas for radiometric remote sensing,” Electronics and Commnications Engineering Journal, vol. 8, no. 1, pp. 37-48, 1996.
L. Costes, C. Bushell, M. Buckley, et al., “Microwave humidity sounder (MHS) antenna,” Proc. SPIE, 3870, pp. 412-426, 1999.
R. Jorgensen, G. Padovan, P. de Maagt, D. Lamarre, and L. Costes, “A 5-frequency mili-meter wave antenna for a spaceborne limb sounding instrument,” IEEE Trans. Antennas Propagat., vol. 49, no. 5, 2001.
S.-W. Zhang, J. Li, Z.-Z. Wang, et al., “Design of the second generation microwave humidity sounder (MWHS-II) for Chinese meteorological satellite FY-3,” Proc. IGARSS’12, Munich, pp. 4672-4675, 2012.
M. Candotti, A. Baryshev, and N. Trappe, “Quasioptical assessment of the ALMA band 9 front-end,” Infrared Physics & Technology, vol. 52, no. 5, pp. 174-179, 2009.
R. Qiang, J. Chen, and F. Yang, “Finite difference time domain modeling of finite-sized electromagnetic source over periodic structure via a plane wave spectral expansion approach,” Radio Science, vol. 45, RS5003, 2010.
R. Qiang, J. Chen, F. Capolino, and D. R. Jackson, “ASM-FDTD: a technique for calculating the field of a finite source in the presence of an infinite periodic artificial material,” Microwave and Wireless Components Letters, IEEE, vol. 17, no. 4, pp. 271-273, 2007.
