Patent ID: 6806840
Filing Date: 2004-10-19
Classification: H01Q

Abstract:
A patch antenna, provided for covering the bandwidth utilized in Industrial-Scientific-Medical (ISM) band, comprising:a base board; a radiating metal plate, wherein said radiating metal plate is a round plate having a stripe-shaped opening, and is located at a predetermined distance from said base board, and said stripe-shaped opening is in a substantially rectangular form diametrically extending through the edge of said radiating metal plate, and said stripe-shaped opening is composed of two parallel sides and a connecting side vertically connecting said two parallel sides, and the average length of said stripe-shaped opening is shorter than the radius of said round plate, and said predetermined distance is longer than the average length of said stripe-shaped opening; a metal supporting plate, wherein one end of said metal supporting plate is electrically connected to said connecting side of said stripe-shaped opening of said radiating metal plate and a feeding point is formed thereon; and a metal fixed plate, wherein one end of said metal fixed plate is electrically connected to the other end of said metal supporting plate, and said metal fixed plate is electrically installed on said base board.