# US 12,224,780 B2 · Electronic device including power amplifier and front-end module including power amplifier > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,224,780 B2 - Document ID: US12224780B2 - Status: Granted - Kind: B2 - Application number: 17/742,838 - Filed: 2022-05-12 - Published: 2022-11-17 - Granted: 2025-02-11 - Earliest claimed: 2021-05-13 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Kyujae Jang; Cheonshik Kim; Juho Van; Jonghyeok Im; Daeyoung Jo; Youngjune Hong; Daehan Choi; Hyeyong Go; Yeongseob Lim; Sungyoul Cho; Taekyoung Jin - Web page: https://patentgrep.com/patent/US12224780B2 ## CPC - H04B 1/04: Circuits - H03F 1/02: Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation - H03F 1/0211: {with control of the supply voltage or current} - H03F 1/0277: {Selecting one or more amplifiers from a plurality of amplifiers} - H03F 1/0283: {Reducing the number of DC-current paths} - H03F 3/19: with semiconductor devices only - H03F 3/21: with semiconductor devices only {(H03F3/245 takes precedence)} - H03F 3/24: of transmitter output stages - H03F 3/245: {with semiconductor devices only} - H03F 3/68: Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics {(power amplifiers using a combination of several semiconductor amplifiers H03F3/211; combinations of amplifiers using coupling networks with distributed constants H03F3/602)} - H04B 1/00: Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission - H03F 2200/102: A non-specified detector of a signal envelope being used in an amplifying circuit - H03F 2200/105: A non-specified detector of the power of a signal being used in an amplifying circuit - H03F 2200/171: A filter circuit coupled to the output of an amplifier - H03F 2200/451: the amplifier being a radio frequency amplifier - H04B: TRANSMISSION - H03F: AMPLIFIERS ## Abstract According to various embodiments, an electronic device may include: a communication processor, a radio frequency (RF) integrated circuit (RFIC) configured to receive a signal output from the communication processor and to modulate the signal into an RF signal, a power management circuit, a first power amplifier configured to amplify an RF signal output from the RFIC based on power supplied from the power management circuit, a second power amplifier configured to amplify the RF signal output from the RFIC based on the power supplied from the power management circuit, at least one capacitor connected in parallel to a power supply terminal of the first power amplifier, and at least one switch connected between the power supply terminal and the at least one capacitor, wherein the communication processor is configured to: identify a power amplification mode based a frequency band of the RF signal, and control the at least one switch by outputting a control signal corresponding to the identified power amplification mode. ## Claims ### Claim 1 An electronic device comprising: a communication processor; a radio frequency (RF) integrated circuit (RFIC) configured to receive a signal output from the communication processor and to modulate the signal into an RF signal; a power management circuit; a first power amplifier configured to receive power supplied from the power management circuit; a second power amplifier connected in parallel to the first power amplifier and configured to receive the power supplied from the power management circuit; at least one capacitor connected in parallel to a power supply terminal of the first power amplifier; and at least one switch connected between the power supply terminal and the at least one capacitor, wherein the communication processor is configured to: identify a power amplification mode based on a frequency band of the RF signal, wherein the at least one switch is configured to control electrical connection or disconnection between the power supply terminal and the at least one capacitor based on the identified power amplification mode, and wherein based on the power amplification mode, the RF signal is amplified via either one of the first power amplifier or the second power amplifier. ### Claim 2 (depends on 1) The electronic device of claim 1, wherein the communication processor is configured to identify the power amplification mode further based on a frequency bandwidth of the RF signal. ### Claim 3 (depends on 1) The electronic device of claim 1, wherein the power amplification mode comprises an envelope tracking (ET) mode. ### Claim 4 (depends on 1) The electronic device of claim 1, wherein the power amplification mode comprises an average power tracking (APT) mode. ### Claim 5 (depends on 1) The electronic device of claim 1, wherein the electronic device comprises a plurality of capacitors connected in parallel to the power supply terminal of the first power amplifier, and the at least one switch is connected to one of the plurality of capacitors based on a control signal. ### Claim 6 (depends on 1) The electronic device of claim 1, wherein the at least one switch is included in a first RF front-end (RFFE) circuit including the first power amplifier. ### Claim 7 (depends on 1) The electronic device of claim 1, wherein the at least one switch is disposed outside a first RF front-end (RFFE) circuit including the first power amplifier. ### Claim 8 (depends on 1) The electronic device of claim 1, wherein the communication processor is configured to: identify a configuration of a capacitor corresponding to the identified power amplification mode, and output a control signal corresponding to the configuration of the capacitor to control the at least one switch. ### Claim 9 (depends on 1) The electronic device of claim 1, wherein the communication processor is configured to transmit a control signal to the RFIC, and the RFIC is configured to control the at least one switch based on the control signal. ### Claim 10 (depends on 9) The electronic device of claim 9, wherein the RFIC is configured to transmit the control signal to the at least one switch through a mobile industry processor interface (MIPI) bus line. ### Claim 11 (depends on 1) The electronic device of claim 1, wherein the communication processor is configured to transmit a control signal to the at least one switch through a general-purpose input and output (GPIO) line. ### Claim 12 An electronic device comprising: a communication processor; a radio frequency (RF) integrated circuit (RFIC) configured to receive a signal output from the communication processor and to modulate the signal into an RF signal; a power management circuit; a first power amplifier configured to receive power supplied from the power management circuit; a second power amplifier connected in parallel to the first power amplifier and configured to receive the power supplied from the power management circuit; and a variable capacitor connected in parallel to a power supply terminal of the first power amplifier, wherein the communication processor is configured to: identify a power amplification mode based on a frequency band of the RF signal, and adjust capacitance of the variable capacitor by outputting a control signal corresponding to the identified power amplification mode, wherein based on the power amplification mode, the RF signal is amplified via either one of the first power amplifier or the second power amplifier. ### Claim 13 (depends on 12) The electronic device of claim 12, wherein the communication processor is configured to identify the power amplification mode further based on a frequency bandwidth of the RF signal. ### Claim 14 (depends on 12) The electronic device of claim 12, wherein the power amplification mode comprises an envelope tracking (ET) mode. ### Claim 15 (depends on 12) The electronic device of claim 12, wherein the power amplification mode comprises an average power tracking (APT) mode. ### Claim 16 A front-end module include: a power management circuit, a first power amplifier configured to receive power supplied from the power management circuit, a second power amplifier connected in parallel to the first power amplifier configured to receive the power supplied from the power management circuit, at least one capacitor connected in parallel to a power supply terminal of the first power amplifier, and at least one switch connected between the power supply terminal and the at least one capacitor and configured to control electrical connection or disconnection between the power supply terminal and the at least one capacitor, wherein the at least one switch is controlled by a control signal corresponding to a power amplification mode based on a frequency band of a radio frequency (RF) signal, and wherein based on the power amplification mode, the RF signal is amplified via either one of the first power amplifier or the second power amplifier. ### Claim 17 (depends on 16) The front-end module of claim 16, wherein the power amplification mode comprises an envelope tracking (ET) mode. ### Claim 18 (depends on 16) The front-end module of claim 16, wherein the power amplification mode comprises an average power tracking (APT) mode.