| 摘要 |
Disposing an additional sleeve-shaped structure, which is also called a sleeve, on a first radiator (204,304) of both resonant radiators of a dipole antenna (200, 220, 300, 350) so that a cavity is formed between the additional sleeve-shaped structure and a second resonant radiator (212, 316) of the dipole antenna (200, 220, 300, 350). An effective bandwidth of the dipole antenna (200, 220, 300, 350) is increased significantly by a capacitance effect caused by the cavity so that more channels can be received by a general digital television broadband antenna while the dipole antenna (200, 220, 300, 350) is applied on the digital television broadband antenna. |
