Patent ID: 9385427
Filing Date: 2016-07-05
CPC Classification: H01Q

Claim Text:
1. A multi-band antenna comprising: a radiating portion comprising a plurality of connecting ends, the connecting ends at least comprising a first connecting end, a second connecting end, a third connecting end, and a fourth connecting end; a feed portion; a ground portion comprising two ground sections with different impedances; a first switch module; and a second switch module; wherein if the first switch module connects the feed portion to the first connecting end or the second connecting end, the second switch module connects one of the ground sections to a third connecting end or a fourth connecting end; and if the first switch module connects the feed portion to the first connecting end or the second connecting end, and connects one of the ground sections to the second connecting end or the first connecting end which is not connected to the feed portion, the second switch module connects one of the ground sections to the third connecting end or the fourth connecting end, or the second switch module has no connection, thereby the radiating portion forms different resonance modes to transmit and receive wireless signals at multiple frequency bands; wherein the radiating portion comprises a first radiating section, a second radiating section, and a third radiating section, the first connecting end and the fourth connecting end are formed on opposite ends of the first radiating section, the second connecting end is formed on an end of the third radiating section, and the third connecting end is formed on an end of the second radiating section; wherein the first radiating section comprises a first arm, a second arm, and a third arm connected in order, the first arm and the third arm are perpendicularly connected to opposite ends of the second arm and are extending in a same direction, the first connecting end is formed an end of the third arm away from the second arm, the fourth connecting end is formed an end of the first arm away from the second arm; wherein the second radiating section comprises a fourth arm, a fifth arm, and a sixth arm, the fourth arm and the sixth arm are perpendicularly connected to opposite ends of the fifth arm and are extending in an opposite direction, the fourth arm is parallel to the first arm, the fifth arm is parallel to the second arm, and the sixth arm is parallel to the third arm and is connected to the second arm, the third connecting end is formed on an end of the fourth arm away from the fifth arm; and wherein the third radiating portion comprises a seventh arm and an eighth arm, the seventh arm is parallel to the third arm, and the eighth arm is spaced parallel to the fifth arm, the second connecting end is formed on an end of the seventh arm away from the eighth arm.