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

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Text this: Gain enhancement of slot array for base station using cavity of curved-woodpile metamaterial