Patent ID: 8836599
Filing Date: 2014-09-16
Classification: H01Q

Abstract:
1. A multi-band broadband antenna comprising: a dipole structure consisting of a signal line and a ground line, said signal line providing a high-frequency radiation path, said ground line providing a low-frequency radiation path, said ground line surrounding a part of said signal line, said signal line having a part thereof exposed to the outside of said ground line, said ground line comprising a ground feed-in point, said signal line comprising a signal feed-in point disposed in a position relative to said ground feed-in point so that a co-planar waveguide structure is formed in the multi-band broadband antenna; wherein said ground line comprises a starting point, a straight segment extending from said starting point, a first reversing segment reversely extending with respect to said straight segment from one end of said straight segment remote from said starting point and terminating in an oblique end portion, a second reversing segment reversely extending with respect to said first reversing segment from said oblique end portion of said first reversing segment and terminating in a curved end portion, a third reversing segment reversely extending with respect to said second reversing segment from the curved end portion of said second reversing segment and terminating in an end scroll; the oblique end portion connected between said first reversing segment and said second reversing segment is located on a first end of said ground line, said curved end portion located between said second reversing segment and said third reversing section is located on a second end of said ground line, and said end scroll is located between said first end and said second end of said ground line; a middle passage is surrounded by said straight segment, said first reversing segment, the oblique end portion of said first reversing segment and the end scroll of said third reversing segment; said straight segment has a length that is shorter than a length of said first reversing segment; said straight segment and said first reversing segment are located between said second reversing segment and said third reversing segment; said ground feed-in point is located on the connection between said straight segment and said first reversing segment; and said signal line is located in said middle passage.