# US 10,483,915 B2 · Radio frequency circuit, transmitter, base station, and user terminal > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,483,915 B2 - Document ID: US10483915B2 - Status: Granted - Kind: B2 - Application number: 15/970,400 - Filed: 2018-05-03 - Published: 2018-09-06 - Granted: 2019-11-19 - Earliest claimed: 2014-12-11 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Liangfang Wang; Shengbo Wu; Chenglin Wu; Wei Huang; Xiang Feng - Web page: https://patentgrep.com/patent/US10483915B2 ## CPC - H03F 1/0205: {in transistor amplifiers} - H03F 1/0294: {using vector summing of two or more constant amplitude phase-modulated signals} - H03F 3/19: with semiconductor devices only - H03F 3/245: {with semiconductor devices only} - H03F 2200/451: the amplifier being a radio frequency amplifier - H04W 52/0209: {in terminal devices} - H04W 52/08: Closed loop power control - Y02D 30/70: in wireless communication networks - H03F: AMPLIFIERS - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract The application provides a radio frequency circuit, including: a first circuit and a second circuit. The first circuit is configured to receive a first signal and a second signal; split the first signal into a third signal and a fourth signal, and split the second signal into a fifth signal and a sixth signal; adjust a phase of the fifth signal to obtain a seventh signal; and combine the seventh signal and the third signal into an eighth signal. The second circuit includes a primary power amplifier branch and a secondary power amplifier branch, and the primary power amplifier branch is configured to process the fourth signal and the sixth signal, and the secondary power amplifier branch is configured to process the eighth signal. ## Claims ### Claim 1 A device, comprising: a receiver, configured to receive a first signal and a second signal; a first splitter, configured to split the first signal into a third signal and a fourth signal, a second splitter, configured to split the second signal into a fifth signal and a sixth signal; a phase adjuster, configured to adjust a phase of the fifth signal to obtain a seventh signal; and a combiner, configured to combine the seventh signal and the third signal into an eighth signal. ### Claim 2 (depends on 1) The device according to claim 1, wherein the phase adjuster comprises a first device, and the first device is a microstrip, a delay line, a variable capacitance diode, or a phase shifter; and wherein the first device is configured to adjust the phase of the fifth signal. ### Claim 3 (depends on 1) The device according to claim 1, wherein the first splitter comprises a first coupler or a first power splitter; and wherein the second splitter comprises a second coupler or a second power splitter. ### Claim 4 (depends on 1) The device according to claim 1, wherein the combiner comprises a third coupler or a third splitter. ### Claim 5 (depends on 1) The device according to claim 1, further comprising an attenuation network, configured to attenuate the seventh signal and the third signal. ### Claim 6 (depends on 1) The device according to claim 1, wherein the first signal and the second signal have identical amplitudes and reverse phases. ### Claim 7 An apparatus, comprising a circuit, the circuit comprising: a receiving circuit, configured to receive a first signal and a second signal; a splitting circuit, configured to split the first signal into a third signal and a fourth signal, and split the second signal into a fifth signal and a sixth signal; a phase adjustment circuit, configured to adjust a phase of the fifth signal to obtain a seventh signal; and a combining circuit, configured to combine the seventh signal and the third signal into an eighth signal. ### Claim 8 (depends on 7) The apparatus according to claim 7, wherein the phase adjustment circuit comprises a microstrip, a delay line, a variable capacitance diode, or a phase shifter. ### Claim 9 (depends on 7) The apparatus according to claim 7, wherein the splitting circuit comprises a first device, the first device is a first coupler or a first power splitter, and the first device is configured to split the first signal into the third signal and the fourth signal; and wherein the splitting circuit further comprises a second device, the second device is a second coupler or a second power splitter, and the second device is configured to split the second signal into the fifth signal and the sixth signal. ### Claim 10 (depends on 7) The apparatus according to claim 7, wherein the combining circuit comprises a combiner. ### Claim 11 (depends on 7) The apparatus according to claim 7, wherein the circuit further comprises an attenuation network, configured to attenuate the seventh signal and the third signal. ### Claim 12 (depends on 7) The apparatus according to claim 7, wherein the first signal and the second signal have identical amplitudes and reverse phases. ### Claim 13 A method, comprising: receiving, by a circuit, a first signal and a second signal; splitting, by the circuit, the first signal into a third signal and a fourth signal, and splitting the second signal into a fifth signal and a sixth signal; adjusting, by the circuit, a phase of the fifth signal to obtain a seventh signal; and combining, by the circuit, the seventh signal and the third signal into an eighth signal. ### Claim 14 (depends on 13) The method according to claim 13, wherein the circuit comprises a first device, and the first device is a microstrip, a delay line, a variable capacitance diode, or a phase shifter, and wherein adjusting, by the circuit, a phase of the fifth signal to obtain a seventh signal comprises adjusting, by the first device, the phase of the fifth signal to obtain the seventh signal. ### Claim 15 (depends on 13) The method according to claim 13, wherein the circuit comprises a first coupler and a second coupler; and wherein splitting, by the circuit, the first signal into a third signal and a fourth signal, and splitting the second signal into a fifth signal and a sixth signal comprises: splitting, by the first coupler, the first signal into the third signal and the fourth signal, and splitting, by the second coupler, the second signal into the fifth signal and the sixth signal. ### Claim 16 (depends on 13) The method according to claim 13, wherein the circuit comprises a combiner; and wherein combining, by the circuit, the seventh signal and the third signal into an eighth signal comprises combining, by the combiner, the seventh signal and the third signal into the eighth signal. ### Claim 17 (depends on 13) The method according to claim 13, wherein the circuit further comprises an attenuation network, and the method further comprises: attenuating, by the attenuation network, the seventh signal and the third signal. ### Claim 18 (depends on 13) The method according to claim 13, wherein the first signal and the second signal have identical amplitudes and reverse phases.