Wideband antenna

1. A wideband antenna, comprising:

a grounding element, electrically connected to a ground;

a radiating element;

a matching adjustment element, electrically connected to the radiating element, comprising:

a plurality of branches, electrically connected between the radiating element and the feed-in element, wherein a total width of the plurality of branches is related to the bandwidth of the wideband antenna;

a feed-in element, electrically connected between the matching adjustment element and the grounding element, for receiving feed-in signals; and

a shorting element, electrically connected between the matching adjustment element and the grounding element;

wherein a width of the matching adjustment element is related to a bandwidth of the wideband antenna.

2. The wideband antenna of claim 1 , wherein the radiating element comprises:

a first radiator, extending along a first direction; and

a second radiator, electrically connected to the first radiator, and extending along an opposite direction of the first direction;

wherein the matching adjustment element is electrically connected between the first radiator and the second radiator.

3. The wideband antenna of claim 1 , further comprising at least an auxiliary radiating element, electrically connected to the matching adjustment element, for improving the bandwidth of the wideband antenna.

4. The wideband antenna of claim 1 , wherein the shorting element conforms to a meander shape.