Patent ID: 9735467
Date: 2017-08-15
CPC Classifications: H01Q

Claim:
1. An antenna consisting essentially of: a grounding portion extending in a transverse direction defining a first end and a second end opposite to each other; a first arm extending from the first end of the grounding portion and towards the second end, the first arm and the grounding portion defining a first slot therebetween, the first arm having a free end close to the second end and defining an opening between the free end and the second end; a second arm extending from the second end of the grounding portion and towards the first end, the second arm located outside of the first arm, the second arm and the first arm defining a second slot therebetween; and a coaxial cable comprising an inner conductor and an outer conductor, the inner conductor and the outer conductor connecting the free end of the first arm and the second end of the grounding portion, respectively, to form a loop around the first slot, or the inner conductor and the outer conductor connecting the free end of the first arm and a part of the second arm near the second end of the grounding portion, respectively, to form a loop around the first slot; wherein the outer conductor connects the second end of the grounding portion to form a grounding feed-in point, and the inner conductor connects the free end of the first arm to form a signal feed-in point; wherein the first arm and the second arm are located in a same plane, and the first arm is located between the grounding portion and the second arm; wherein the first arm has a first vertical arm connecting to the first end of the grounding portion and a first transverse arm extending from the first vertical arm towards the second end of the grounding portion; wherein the second arm has a second vertical arm connecting to the second end of the grounding portion and a second transverse arm extending from the second vertical arm towards the first end of the grounding portion; wherein the outer conductor connects the second vertical arm to form a grounding feed-in point; wherein the second vertical arm is higher than the first vertical arm; wherein a length of the grounding portion in a transverse direction is 28.6 mm, a height of the second vertical arm is 6 mm; wherein a length of the second arm in a transverse direction is smaller than a length of the grounding portion in the transverse direction; wherein a loop antenna formed by the first arm and the grounding portion works in a low frequency band, and the second arm works in a high frequency band by coupling.