Patent ID: 9653794
Date: 2017-05-16
CPC Classifications: H01Q

Claim:
1. A broadband antenna mounted aside a metal electronic element in a wireless communication device, the broadband antenna comprising: a feeding portion feeding signals; a first radiating portion connected perpendicular to the feeding portion; a second radiating portion connected perpendicular to the feeding portion and the first radiating portion; a coupling portion spaced from the first radiating portion and the second radiating portion, the coupling portion comprising a first coupling arm and a second coupling arm connected to and opposite to the first coupling arm; and a ground portion connected perpendicular to a middle portion of the coupling portion and adjacent to the metal electronic element, the ground portion being substantially serpentine-shape, one end of the ground portion connected perpendicular to a connecting portion of the first coupling arm and the second coupling arm; wherein the first radiating portion and the second radiating portion feed signals from the feeding portion to cooperatively use a high frequency mode and couple the signals to the coupling portion and the ground portion to cooperatively use a low frequency mode, the ground portion increases an inductance performance of the broadband antenna, thereby decreasing an interference caused by the metal electronic elements; wherein the second radiating portion comprises a first radiating section, a second radiating section, and a third radiating section connected in that order, the first radiating section is connected perpendicular to and is coplanar with the first radiating portion the, the second radiating section is connected perpendicular to the first radiating section and is parallel with the feeding portion, the third radiating section is connected perpendicular to an end of the second radiating section away from the first radiating section and is parallel with the first radiating portion, the third radiating section has a same extending direction as the first radiating portion; wherein the first coupling arm and the second coupling arm are both substantially U-shaped; wherein the first coupling arm comprises a first coupling section, a second coupling section, and a third coupling section, connected in that order, the first coupling section is spaced from and is parallel with an end portion of the first radiating portion away from the feeding portion, the second coupling section is connected perpendicular between the first coupling section and the third coupling section, the third coupling section is parallel with the first coupling section; wherein the second coupling arm comprises a fourth coupling section, a fifth coupling section, and a sixth coupling section connected in that order, the fourth coupling section is spaced from and is parallel with an end portion of the first radiating portion that near the feeding portion, the fourth coupling section is connected to and is collinear with the first coupling section, the fifth coupling section is connected perpendicular between the fourth coupling section and the sixth coupling section, the fifth coupling section is parallel with the second radiating section, the sixth coupling section is parallel with the third radiating section; wherein one end of the ground portion is connected perpendicular to a connecting portion of the first coupling section and the fourth coupling section.