Decoupling device, antenna system with the decoupling device and decoupling method thereof

Abstract

The decoupling device in an antenna system includes a ground plate, a decoupling element, a switching element and at least two matching circuits. The decoupling element is disposed between two adjacent antennas, and the decoupling element and the two adjacent antennas are coupled to the ground plate. The switching element is arranged on the ground plate and coupled to the decoupling element. At least two matching circuits are disposed on the ground plate and are respectively coupled to the switching element. The switching element is switched according to an operating frequency of a communication element to couple one of the two matching circuits to the decoupling element.

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