Radio-Frequency Device and Wireless Communication Device for Enhancing Antenna Isolation

摘要

A radio-frequency device includes a grounding element, a first antenna including a first parasitic element, a second antenna, a third antenna and a second parasitic element, wherein the grounding element is shared by the first, second and third antennas, the second parasitic element is electrically connected to the grounding element for guiding a first reflected signal from the first antenna to the second parasitic element, and the first parasitic element is electrically connected to the grounding element for guiding a second and third reflected signals from the second and third antennas to the first parasitic element, so as to enhance isolations of the first, second and third antennas.

主权项

1. A radio-frequency device for a wireless communication device, comprising:
an antenna disposition area; a grounding element, for providing ground; a first antenna, disposed in the antenna disposition area for transmitting or receiving a first radio signal, wherein the first antenna comprises:
a metal coupling piece;a first radiating element, electrically connected to the grounding element for emitting the first radio signal;a first signal feed-in element, electrically connected to the metal coupling piece for coupling the first radio signal to the first radiating element via the metal coupling piece such that the first radio signal is emitted via the first radiating element; anda first parasitic element, electrically connected to the grounding element; a second antenna, disposed in the antenna disposition area for transmitting or receiving a second radio signal; a third antenna, disposed in the antenna disposition area for transmitting or receiving a third radio signal; and a second parasitic element, disposed in the antenna disposition area and electrically connected to the grounding element for guiding a first reflected signal generated from the first radio signal to the second parasitic element so as to enhance isolations of the first antenna, the second antenna and the third antenna; wherein the grounding element is disposed between the first antenna, the second parasitic element, the second antenna and the third antenna, the grounding element is shared by the first antenna, the second antenna and the third antenna, the metal coupling piece is disposed between the first parasitic element and the first radiating element, and the first parasitic element is used for guiding a second reflected signal generated from the second radio signal and a third reflected signal generated from the third radio signal to the first parasitic element so as to enhance isolations of the first antenna, the second antenna and the third antenna.