Patent ID: 7864125
Filing Date: 2011-01-04
Classification: H01Q

Abstract:
1. A coupling device, comprising: a substrate, comprising a first surface and a second surface; a ground element, disposed on the second surface, wherein the ground element has a first annular groove, a second annular groove and a feed slot, the second annular groove surrounds the first annular groove, the feed slot has a first end and a second end, the first end is connected to the first annular groove, and the feed slot passes the second annular groove, wherein the ground element further has at least one isolation portion, the isolation portion extends into the second annular groove from one of an inner edge and an outer edge of the second annular groove; a first feed conductor, disposed on the first surface corresponding to the first annular groove and the second annular groove, wherein the first feed conductor couples the ground element to feed an electric current; and a second feed conductor, disposed on the first surface corresponding to the feed slot, wherein the second feed conductor couples the feed slot to feed a magnetic current.