Wireless Communication Device and Method of Adjusting Antenna Matching

摘要

A wireless communication device includes a diversity antenna operating in a receiving frequency band to receive a receiving signal in the reception frequency band, a tunable matching circuit for adjusting a matching of the diversity antenna according to a control signal, a detection circuit for detecting a wireless communication system corresponding to the receiving signal to generate a detection result, wherein the detection result indicates an antenna configuration and a transmission frequency band corresponding to the wireless communication system, and a radio-frequency processing circuit for determining whether to adjust the matching of the diversity antenna to weaken antenna performance of the diversity antenna in both or one of the transmission frequency band and the reception frequency band according to the antenna configuration so as to improve an isolation between the diversity antenna and a main antenna.

主权项

1. A wireless communication device, comprising:
a main antenna operating in a receiving frequency band to receive a receiving signal in the receiving frequency band; a diversity antenna operating in the receiving frequency band to receive the receiving signal in the receiving frequency band; a tunable matching circuit coupled to the main antenna and the diversity antenna for adjusting a matching of the diversity antenna according to a control signal; a detection unit coupled to the tunable matching circuit for detecting a wireless communication system corresponding to the receiving signal to generate a detection result, wherein the detection result indicates an antenna configuration and a transmitting frequency band corresponding to the wireless communication system; and a radio-frequency processing circuit coupled to the detection unit and the tunable matching circuit for determining whether to adjust the matching of the diversity antenna according to the antenna configuration indicated by the detection result to output the control signal to the tunable matching circuit, such that the tunable matching circuit adjusts the matching of the diversity antenna to conform to the antenna configuration; wherein the radio-frequency processing circuit determines whether to weaken an antenna performance of the diversity antenna in both or one of the transmitting frequency band and the receiving frequency band according to the antenna configuration to improve an isolation between the diversity antenna and the main antenna.