Patent ID: 8111195

Claim:
A multi-frequency antenna, comprising: a radiating patch having a first radiating body operating in a lower frequency band and a second radiating body operating in a higher frequency band; a grounding patch spaced apart from the radiating patch, and comprising a horizontal grounding element and a vertical grounding element extending from an edge of the horizontal grounding element; a connecting element electrically connecting the first radiating body and the second radiating body to the grounding patch, the connecting element comprising a first connecting arm and a second connecting arm, and an obtuse angle being formed between the first connecting arm and the second connecting arm; a feeding line comprising an inner conductor and an outer conductor; wherein the first radiating body comprises a first radiating element and a second radiating element extending from the first radiating element; the second radiating body comprises the first radiating element and a third radiating element extending from the first radiating element; the radiating patch also comprises a fourth radiating element extending from an end of the connecting element and a coupling element extending from the grounding patch; the inner conductor electrically connects to a joint of the fourth radiating element and the connecting element; the outer conductor electrically connects to the grounding patch, said horizontal element has a triangular tail end; the connecting element extends from the triangular tail end, and said first connecting arm and the triangular tail end form an acute angle.