Patent ID: 8471382

Claim:
A package comprising: a conductive base plate; a metal wall configured to be disposed on the conductive base plate; a through-hole configured to be disposed in input and output portions of the metal wall; a lower layer feed through configured to be disposed on the conductive base plate; a wiring pattern configured to be disposed on the lower layer feed through; an upper layer feed through configured to be disposed on a part of the lower layer feed through and a part of the wiring pattern; and a terminal configured to be disposed on the wiring pattern, wherein a width of a part of the lower layer feed through is wider than a width of the through-hole, the lower layer feed through is adhered to a side surface of the metal wall, a width of the upper layer feed through is wider than the width of the through-hole, the upper layer feed through is adhered to the side surface of metal wall, and an air layer is formed between the wiring pattern and an internal wall of the through-hole.