Text this: A compact dual-band filter based on dual-mode resonators

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