Patent ID: 6927744
Filing Date: 2005-08-09
Classification: H01Q

Abstract:
1. An antenna structure for use in a mobile communication device, comprising: an antenna, including a cylindrical helical antenna portion attached to an end of a whip antenna portion, protruding from a casing of said mobile communication device; and a cap for covering a surface of said cylindrical helical antenna portion and having a wall, said cap preventing antenna gain of said cylindrical helical antenna portion from being degraded due to a finger touch of a user by providing a distance between an outer peripheral surface of the wall of said cap and said surface of said cylindrical helical antenna portion of at least 1 mm, wherein the distance between said outer peripheral surface of said cap and said surface of said cylindrical helical antenna portion is increased by increasing a wall thickness of said cap, and wherein the wall of said cap is partially protruded by forming a plurality of irregularities of thickness of said cap along a length of said outer peripheral surface.