Multi-band antenna and electronic device provided with the same

摘要

A multi-band antenna includes a ground plane, and a radiating unit including an L-shaped first radiating arm, a U-shaped second radiating arm, a feed-in arm and a coupling arm. The first and second radiating arms are connected to the ground plane, and have respective free end portions that are spaced apart from and overlap the ground plane, that face each other, and that define an opening in spatial communication with an inner space defined by the first and second radiating arms and the ground plane. The feed-in arm is disposed in the inner space between the first radiating arm and the ground plane, is connected to the ground plane, and overlaps the opening. The coupling arm is connected to the connecting segment, and overlaps the free end portions.

主权项

1. A multi-band antenna, comprising: a ground plane; and a radiating operable over at least two different frequency bands and unit including: a substantially L-shaped first radiating arm having a first connecting end portion electrically connected to said ground plane, and a first free end portion that is spaced apart from and physically overlaps a portion of said ground plane in a first direction, a substantially U-shaped second radiating arm having a second connecting end portion electrically connected to said ground plane, and a second free end portion that is spaced apart from and physically overlaps a portion of said ground plane in the first direction, said second radiating arm cooperating with said first radiating arm and said ground plane to define an inner space therein, said first and second free end portions facing each other and defining an opening in spatial communication with said inner space therebetween, a feed-in arm disposed in said inner space and including a connecting segment electrically connected to said ground plane and physically overlapping said opening in the first direction, and a feed-in segment electrically connected to said connecting segment and disposed between said first radiating arm and said ground plane, said feed-in segment including a signal feed-in point, and a coupling arm including a main coupling segment electrically connected to said connecting segment and physically overlapping said first and second free end portions in the first direction.