Patent ID: 11888510
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A transceiver, applied to a wireless communications device, comprising a transmission/reception separation circuit, wherein the transmission/reception separation circuit comprises:
a transmission amplification circuit, an impedance adjustment circuit, and a reception amplification circuit, wherein:
an output end of the transmission amplification circuit is connected to a first end of the impedance adjustment circuit, a second end of the impedance adjustment circuit is connected to an input end of the reception amplification circuit, and the second end of the impedance adjustment circuit and the input end of the reception amplification circuit are further configured to be connected to an antenna;
the transmission amplification circuit is configured to amplify a first signal to be transmitted by using the antenna;
the reception amplification circuit is configured to amplify a second signal received by using the antenna, wherein when the antenna transmits the amplified first signal, a first impedance is in a high impedance state, and the first impedance is an impedance seen from the input end of the reception amplification circuit;
the reception amplification circuit comprises a reception power amplifier and a reception switch, an input end of the reception power amplifier is connected to a first end of the reception switch, a second end of the reception switch is connected to the second end of the impedance adjustment circuit, and the second end of the reception switch is further configured to be connected to the antenna; and
the impedance adjustment circuit is configured to adjust a second impedance to a high impedance state when the antenna receives the second signal, wherein the second impedance is an impedance seen from the second end of the impedance adjustment circuit.