【摘要】 研究了双层方环形缝隙频率选择表面(FSS)在正入射和TE、TM波45°斜入射情况下借机械平移调谐频率的特性,结果表明:该频率选择表面具有较好极化和入射角度适应性;按2.40 GHz频率设计的实际可调范围达1.90~3.20 GHz,实现了54.17%的相对频移;调谐方法简便易行,可调规律性较好;成本低廉,有着广泛的应用前景。更多还原

【Abstract】 The mechanically tunable characteristics of double-layer FSS(frequency selective surface) with square-loop slot elements is studied under normal incidence and 45° oblique incidence of plane wave with TE and TM polarization.The results show that FSS has good stability for different polarizations and incidence angles.The actual tunable range covers 1.90~3.20 GHz,corresponding to 54.17% shift of resonant frequency for 2.40 GHz in designing.This method could be easily realized and has good tunable regularity,with low cost.It has a potential of wide applications.更多还原