A dual-band antenna is disclosed, comprising a radiating body, a shorting element, and a feeding element. The radiating body comprises a plurality of radiating portions located in a first, a second, a third, and a fourth planes, respectively. The shorting element and the feeding element both extend from the radiating body and are located in the first plane. The radiating portions located in the first, the second, and the third planes transmit and/or receive signals in a first frequency band. The radiating portions located in the first, the second, and the fourth planes transmit and/or receive signals in a second frequency band. A first angle between the first and the second planes, a second angle between the second and the third planes, and a third angle between the second and the fourth planes range between 80 degrees to 100 degrees.