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  ______    ______    ______   __   __    ____    
 /_   _//  /_   _//  /_   _//  \ \\/ //  |  _ \\  
   | ||     -| ||-     | ||     \ ` //   | |_| || 
  _| ||     _| ||_    _| ||      | ||    | .  //  
 /__//     /_____//  /__//       |_||    |_|\_\\  
 `--`      `-----`   `--`        `-`'    `-` --`

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Text this: Design and optimization of Frequency Selective Surfaces (FSS)