Multi-band antenna and methods for long term evolution wireless system

摘要

A multiband dipole antenna solution suitable for use in various wireless device applications, and methods of tuning and utilizing the same. In one embodiment, the antenna is adapted for use in long term evolution (LTE or LTE-A) radio devices. In one implementation, the antenna comprises (i) two planar directly fed radiating elements operating in a lower frequency band and disposed on two opposing sides of a dielectric structure, and (ii) two electromagnetically coupled radiating elements operating in an upper frequency band also disposed on the opposing sides of the dielectric structure. An additional pair of electromagnetically coupled radiator elements is utilized to achieve wider antenna operating bandwidth.

主权项

1. An antenna apparatus operable in a first frequency band and a second frequency band, the apparatus comprising:
a dielectric element comprising a first side and a second opposing side, a top antenna assembly disposed on the first side and a bottom antenna assembly disposed on the second opposing side, a feed point disposed on the first side, and a ground point disposed on the second opposing side; a first pair of lower frequency band structures of the top antenna assembly operable in the first frequency band and disposed substantially on the first side, the first pair of lower frequency band structures galvanically coupled to the feed point; a second pair of lower frequency structures of the bottom antenna assembly operable in the first frequency band and disposed substantially on the second opposing side, the second pair of lower frequency band structures galvanically coupled to the ground point; a third pair of higher frequency band structures of the top antenna assembly operable in the second frequency band and disposed substantially on the first side, the third pair of higher frequency band structures electromagnetically coupled to the feed point; and a fourth pair of higher frequency band structures of the bottom antenna assembly operable in the second frequency band and disposed substantially on the second opposing side, the fourth pair of higher frequency band structures electromagnetically coupled to the ground point; wherein:
the first pair of lower frequency band structures are positioned directly above the fourth pair of higher frequency band structures of the bottom antenna assembly and opposite the second pair of lower frequency band structures of the bottom antenna assembly disposed on second opposing side; andthe second pair of lower frequency band structures are positioned directly below the third pair of higher frequency band structures and opposite the first pair of lower frequency band structures of the top antenna assembly disposed on the first side.