Patent ID: 8049672

Claim:
An ultra wideband antenna with band-notched characteristics, comprising: a substrate; a grounding unit, installed on the substrate and scooped with a first slot and a first strip hole, the first strip hole being communicated with the first slot and extended to a side of the substrate; a signal feeding unit, installed on the substrate and including a horizontal portion and a vertical portion, in which the horizontal portion is located in the first slot and the vertical portion is located in the first strip hole; a first complementary, separate, circular resonator; and a second complementary, separate, circular resonator; wherein the first complementary, separate, circular resonator and the second complementary, separate, circular resonator are installed in the horizontal portion of the signal feeding unit, and are connected with each other; wherein the first complementary, separate, circular resonator includes a first rectangular strip slot and a second rectangular strip slot and the first rectangular strip slot surrounds the second rectangular strip slot; wherein the second complementary, separate, circular resonator includes a third rectangular strip slot and a fourth rectangular strip slot and the third rectangular strip slot surrounds the fourth rectangular strip slot; and wherein the first rectangular strip slot and the third rectangular strip slot share a common side.