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In order to meet the low insertion loss of transmission band and the low reflection loss of reflection band in detection technology of millimeter and sub-millimeter wave, in this paper, we design a frequency selective surface (FSS) filter based on waveguide array structure in the sub-millimeter wave band. Through optimizing the structural parameters, the FSS filter overcomes the drawback that the insertion loss increases at large angle of incidence. Meanwhile the FSS filter is not sensitive to the change of angle of incidence, these make it satisfy the requirements of particular engineering. In addition, the frequency responses of the FSS filter to TE and TM are the same, so it can detect the dual-polarized radiation signals simultaneously. Firstly, we give initial values of structural parameter according to the indicator. Secondly, we simulate and optimized the structure by simulation software. Finally, a new FSS filter with a low insertion loss is given. Simulation results show that the FSS filter meets the system requirements and overcomes the shortcoming of large insertion loss at a large incident angle. Then, we analyze the main source of the insertion loss in transmission band. An error sensitivity analysis of structural parameters of FSS filter is also given, which provides a reference for fabrication.
[1] Cahill R 1982 Electron letter 18 1060
[2] Parker E A 1983 ICAP IEEE 83 459
[3] Munk B A 2000 Frequency Selective Surfaces Theory and Design (New York: Wiley) p28
[4] Gao J S, Wang S S, Feng X G, Xu N X, Zhao J L, Chen H 2010 Acta Phys. Sin. 59 7338 (in Chinese) [高劲松,王姗姗,冯晓国,徐念喜,赵晶丽,陈红 2010 物理学报 59 7338]
[5] Cahill R, Hall W J, Martin R J 1994 Spacecraft Antennas 8 1
[6] Cahill R,Gamble H S 2001 24th ESTEC Antenna Workshop on Innovative Periodic Antennas: Photonic Bandgap, Fractal and Frequency Selective Surfaces European Space Agency Holland, May, 2001 p103
[7] Lo Y T, Lee S W 1988 Antenna Handbook (New York: VanNostrand Reinhold Co) p13
[8] Huang J, Lee S W 1991 IEEE Int. APS Symp., Ontario, Canada, June 24-28, 1991 p119
[9] Chen C C 1971 IEEE Trans. Microwave Theory and Tech. 19 475
[10] Chen J C 1991 JPL TDA Progress Rep. 42 104
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[1] Cahill R 1982 Electron letter 18 1060
[2] Parker E A 1983 ICAP IEEE 83 459
[3] Munk B A 2000 Frequency Selective Surfaces Theory and Design (New York: Wiley) p28
[4] Gao J S, Wang S S, Feng X G, Xu N X, Zhao J L, Chen H 2010 Acta Phys. Sin. 59 7338 (in Chinese) [高劲松,王姗姗,冯晓国,徐念喜,赵晶丽,陈红 2010 物理学报 59 7338]
[5] Cahill R, Hall W J, Martin R J 1994 Spacecraft Antennas 8 1
[6] Cahill R,Gamble H S 2001 24th ESTEC Antenna Workshop on Innovative Periodic Antennas: Photonic Bandgap, Fractal and Frequency Selective Surfaces European Space Agency Holland, May, 2001 p103
[7] Lo Y T, Lee S W 1988 Antenna Handbook (New York: VanNostrand Reinhold Co) p13
[8] Huang J, Lee S W 1991 IEEE Int. APS Symp., Ontario, Canada, June 24-28, 1991 p119
[9] Chen C C 1971 IEEE Trans. Microwave Theory and Tech. 19 475
[10] Chen J C 1991 JPL TDA Progress Rep. 42 104
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