Patent ID: 9602154
Date: 2017-03-21
CPC Classifications: H03F,H04B

Claim:
1. A wireless communication apparatus, comprising: a first antenna; a second antenna; a power amplifier, amplifying and outputting a radio frequency transmission signal; a switching circuit, coupled to the first antenna, the second antenna and the power amplifier, and selecting to connect the power amplifier to the first antenna or the second antenna; and a control circuit, coupled to the power amplifier and the switching circuit, and predicting a first amplifier character parameter corresponding to the power amplifier while the power amplifier is connected to the first antenna, and predicting a second amplifier character parameter corresponding to the power amplifier while the power amplifier is connected to the second antenna, wherein the control circuit controls the switching circuit to connect the power amplifier to the first antenna or the second antenna according to the first amplifier character parameter, a first signal quality parameter of the first antenna, the second amplifier character parameter and a second signal quality parameter of the second antenna, so as to select the first antenna or the second antenna to transmit the radio frequency transmission signal, wherein the first amplifier character parameter comprises a first working voltage value and a first working current value, and the second amplifier character parameter comprises a second working voltage value and a second working current value, wherein the control circuit generates a first decision parameter related to the first antenna according to the first working voltage value, the first working current value and the first signal quality parameter, and the control circuit generates a second decision parameter related to the second antenna according to the second working voltage value, the second working current value and the second signal quality parameter, and the control circuit compares the first decision parameter with the second decision parameter to decide to use the first antenna or the second antenna to transmit the radio frequency transmission signal.