A Miniaturized Dual-Band FSS With Second-Order Response and Large Band Separation

Abstract
In this letter, a miniaturized dual-band frequency selective surfaces with second-order band-pass response at each operation band is presented. The design is implemented by cascading a two-dimensional periodic array of double square loops and an array of wire grids. The proposed structure composed of three metal and two dielectric layers acts as a spatial dual band microwave filter with large band separation. The predicted FSS has the merits of broadband response, excellent stability for different incident angles, and sharp roll-off at X- and Ka-band, respectively. The simulation and measurement are carried out and further discussed. A good agreement between simulated and measured results verifies the design of the dual-band FSS.
Funding Information
  • National Natural Science Foundation of China (61331005, 61471388, 11204378, 11274389, 61304393, 61302023)
  • Aviation Science Foundation of China (20132796018)
  • National Science Foundation for Post-Doctoral Scientists of China (2013M532131, 2013M532221)
  • Natural Science Foundation of Shaanxi Province (2013JM6005)
  • Annual Excellent Doctoral Degree Dissertations of China (201242)

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