Patent ID: 7940219

Claim:
An antenna adaptable to a plurality of frequencies, comprising: a first element that is connected to a feeding point for feeding, the first element being a bending unit including a plurality of element portions; and a second element that is connected to a grounding point, the second element being arranged in proximity to the first element for coupling feeding with the first element, the second element being a bending unit including a plurality of element portions, wherein the antenna is operated at a first frequency or a second frequency higher than the first frequency, wherein the first element is set to a length resonated with the second frequency and has a resonance frequency higher than the second frequency, wherein the second element is set to a length resonated with the first frequency and has a primary resonance frequency higher than the first frequency and a high-order resonance frequency in a vicinity of the second frequency, and wherein the second element operates as a main radiating element at the first frequency, and both of the first element and the second element operate as radiating elements at the second frequency.