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A novel design methodology for reconfigurable frequency selective surfaces using genetic algorithms

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4 Author(s)
Bossard, J.A. ; Dept. of Electr. Eng., Pennsylvania State Univ., University Park, PA, USA ; Werner, D.H. ; Mayer, T.S. ; Drupp, Robert P.

In this paper, a new reconfigurable frequency selective surface (RFSS) design concept is introduced. A grid of simple metallic patches interconnected by a matrix of switches is proposed as the unit cell of an RFSS. The switches are independently addressable and provide significant transmission and reflection flexibility over a large range of frequencies. This flexibility is exploited by optimizing the switch settings using a genetic algorithm to produce a desired frequency response. The versatility of the design technique is demonstrated by presenting several examples of genetically optimized RFSS. The first example to be considered is a linearly polarized FSS that can be reconfigured for either single-, dual-, or tri-band operation. An RFSS design is also introduced that can be optimized to have a frequency response that is polarization independent in one state (i.e., for one combination of switch settings) and polarization dependent in another state.

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Antennas and Propagation, IEEE Transactions on  (Volume:53 ,  Issue: 4 )