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 _    _     _____                ___     _    _   
| \  / ||  |  ___||     ___     / _ \\  | \  / || 
|  \/  ||  | ||__      /   ||  | / \ || |  \/  || 
| .  . ||  | ||__     | [] ||  | \_/ || | .  . || 
|_|\/|_||  |_____||    \__ ||   \___//  |_|\/|_|| 
`-`  `-`   `-----`      -|_||   `---`   `-`  `-`  
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Text this: Temperature characteristic analysis of a ferrite phase shifter in a grooved waveguide