Wireless communication device and method for adjusting antenna matching

Abstract

The invention discloses a wireless communication device and a method for adjusting antenna matching. The wireless communication device comprises a main antenna, a diversity antenna, an adjustable matching circuit, a detection unit and a radio-frequency processing circuit, wherein the main antenna and the diversity antenna operate at a receiving frequency band to receive a received signal; the adjustable matching circuit is coupled with the main antenna and the diversity antenna, and used for adjusting matching of the main antenna and the diversity antenna according to a control signal; the detection unit is coupled with the adjustable matching circuit, and used for detecting a wireless communication system corresponding to the received signal to generate a detection result; the detection result indicates antenna configuration and a transmitting frequency band which correspond to the wireless communication system; and the radio-frequency processing circuit is coupled with the detection unit and the adjustable matching circuit, and used for judging 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 adjustable matching circuit to allow the adjustable matching circuit to adjust the matching of the diversity antenna to meet the antenna configuration, and judging whether to weaken antenna efficiency of the diversity antenna. The wireless communication device can allow isolation between the two antennas to be optimized.

Description

technical field [0001] The invention relates to a wireless communication device and a method for adjusting antenna matching, in particular to a wireless communication device and a method for adjusting antenna matching that can adjust antenna matching in good time to keep the isolation between two antennas in an optimal state. Background technique [0002] Wireless communication devices, such as mobile phones, tablet computers, and notebook computers, transmit or receive radio waves through antennas to transmit or exchange radio signals, and then access wireless networks. In addition, with the evolution of wireless communication technology, different wireless communication systems have been developed in the known technology, so in order to adapt to the new wireless communication system, the number of antennas configured by the wireless communication device may increase. Table 1 below lists the wireless communication systems supported by the antenna configuration (Antenna Conf...

AI Technical Summary

Problems solved by technology

However, when more than two antennas are used at the same frequency, there will be a problem of isolation

In the case of poor isolation between the dual antennas, the transmission and reception efficiency of the dual antennas will be weakened

[0007] Under the dual-antenna architecture, when the wireless communication device is switched from the MIMO system to the SIMO system, the transmission function of the diversity antenna (that is, the other main antenna) is temporarily unnecessary. If the isolation between the main antenna and the diversity antenna in the transmission frequency band is not Good, it will equivalently weaken the transmitting function of the main antenna

In addition, when the wireless communication device is switched from the MIMO or SIMO system to the SISO system, only the transmitting and receiving functions of the main antenna are required. If the isolation between the main antenna and the diversity or auxiliary antenna is not good, the performance of the main antenna will be equivalently weakened. Transmit and Receive Functions

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