Patent ID: 7982676

Claim:
An antenna structure for a mobile phone having an improved hearing aid compatibility (HAC) character, said mobile phone having a sound output hole, said antenna structure being provided in said mobile phone and being connected with a circuit board having a ground surface in a housing of said mobile phone for wireless signal transmission, said antenna structure comprising: an antenna base board provided in said housing of said mobile phone near said sound output hole; three insulating pads surrounding three edges inside of said housing of said mobile phone a metallic thin layer being a copper foil which envelops said antenna base board from outside of said housing of said mobile phone at a location disposed in correspondence with said antenna base board to be in spaced relationship with said antenna base board, said copper foil being composed of a main copper foil and two wing copper foils for enveloping said housing of said mobile phone with respective edges thereof folded upwardly toward vertical outer surfaces of said insulating pads to form a kind of inverse U-shaped envelopment, said circuit board having a grounding line extending out to one of said wing copper foils, in order that said copper foil contacts said grounding line to form an electric conductive connection with said ground surface of said circuit board.