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| |  | ||  \ \\/ //  / ____||   / _ \\   /_____// 
| |/\| ||   \ ` //  / //---`'  / //\ \\  `____ `  
|  /\  ||    | ||   \ \\___   |  ___  || /___//   
|_// \_||    |_||    \_____|| |_||  |_|| `__ `    
`-`   `-`    `-`'     `----`  `-`   `-`  /_//     
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Text this: Gain enhancement of slot array for base station using cavity of curved-woodpile metamaterial