Patent ID: 7898483

Claim:
A digital TV antenna, wherein the digital TV antenna is located on a substrate, the substrate has a first surface and a second surface opposite to the first surface, comprising: a grounding plane located on the first surface, wherein the grounding plane has a main grounding plane with a grounding terminal and an extended grounding plane extending from the main grounding plane; a first radiation conductor located on the first surface, the first radiation conductor with a feeding terminal has a first side and a second side opposite to the first side, the first radiation conductor couples with the grounding plane and a predetermined distance exists between the first side and the extended grounding plane; a second radiation conductor located on the second surface and coupling with the first radiation conductor, wherein partial second radiation conductor crosses the first side for a first distance to overlap the first radiation conductor to form an overlapping region, wherein the first distance is at least 0.6 mm; and a third radiation conductor located on the second surface and coupling with the second radiation conductor, wherein partial third radiation conductor crosses the second side for a second distance to overlap the first radiation conductor to form an overlapping region, wherein the second distance is at least 0.2 mm.