# US 11,309,923 B2 · Method using signal component of multiplied frequency and electronic device therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,309,923 B2 - Document ID: US11309923B2 - Status: Granted - Kind: B2 - Application number: 17/036,534 - Filed: 2020-09-29 - Published: 2021-04-08 - Granted: 2022-04-19 - Earliest claimed: 2019-10-04 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Yohan Moon; Dongil Yang; Seonjun Kim; Jonghun Yoo; Jongin Lee; Namjun Cho; Hyoseok Na - Web page: https://patentgrep.com/patent/US11309923B2 ## CPC - H04B 1/0458: {Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages (matching circuits in general H03H)} - H03F 1/3247: {using feedback acting on predistortion circuits (H03F1/3264 takes precedence)} - H03F 3/19: with semiconductor devices only - 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)} - H03F 3/72: Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal - H04B 1/0064: {with separate antennas for the more than one band (H04B1/0053 takes precedence)} - H04B 1/0475: {with means for limiting noise, interference or distortion (H04B1/0483 takes precedence)} - H04B 1/40: Circuits - H03F 2200/111: the amplifier being a dual or triple band amplifier, e.g. 900 and 1800 MHz, e.g. switched or not switched, simultaneously or not - H03F 2200/207: A hybrid coupler being used as power measuring circuit at the output of an amplifier circuit - H03F 2200/451: the amplifier being a radio frequency amplifier - H03F 2203/7209: the gated amplifier being switched from a first band to a second band - H04B: TRANSMISSION - H03F: AMPLIFIERS ## Abstract An electronic device is provided. The electronic device includes an antenna, a transmission path electrically connected to the antenna and including at least one amplifier, a transceiver connected to the transmission path and converting a signal, a feedback path connected between the transmission path and the transceiver, at least one processor connected to the transceiver and communicating with at least one external electronic device by using the transceiver, and a memory connected to the at least one processor. The processor may obtain first information about a first phase and a first magnitude, which are associated with the first frequency, and second information about a second phase and a second magnitude, which are associated with a multiplied frequency of the first frequency, from the transmission signal and the reflection signal using the transceiver, and may determine a state of the electronic device based on the first information and the second information. ## Claims ### Claim 1 An electronic device comprising: an antenna; a transmission path electrically connected to the antenna and including at least one amplifier; a transceiver connected to the transmission path and configured to convert a signal; a feedback path connected between the transmission path and the transceiver; at least one processor connected to the transceiver and configured to communicate with at least one external electronic device by using the transceiver; and a memory connected to the at least one processor, wherein the memory stores one or more instructions that, when executed, cause the at least one processor to: transmit a first signal of a first frequency through the transmission path, using the transceiver, obtain a transmission signal and a reflection signal of the transmission signal, which are associated with transmission of the first signal, through the feedback path using the transceiver, obtain first information about a first phase and a first magnitude, which are associated with the first frequency, and second information about a second phase and a second magnitude, which are associated with a multiplied frequency of the first frequency, from the transmission signal and the reflection signal using the transceiver, and determine a state of the electronic device based on the first information and the second information. ### Claim 2 (depends on 1) The electronic device of claim 1, wherein the one or more instructions, when executed, further cause the at least one processor to: identify information of an external object based on the first information and the second information, and determine the state of the electronic device based on the information of the external object, and wherein the information of the external object includes at least one of a distance, direction, or type of the external object. ### Claim 3 (depends on 2) The electronic device of claim 2, wherein the one or more instructions, when executed, further cause the at least one processor to: compare the first information and the second information with values stored in the memory to determine the state of the electronic device. ### Claim 4 (depends on 2) The electronic device of claim 2, wherein the one or more instructions, when executed, further cause the at least one processor to: adjust transmission power associated with the electronic device based on the state of the electronic device. ### Claim 5 (depends on 1) The electronic device of claim 1, further comprising: a duplexer configured to connect the transmission path or a reception path to the antenna, wherein the feedback path is coupled to the transmission path through a coupler positioned between the duplexer and the antenna. ### Claim 6 (depends on 5) The electronic device of claim 5, wherein the feedback path includes an amplification path configured to amplify a component corresponding to the multiplied frequency. ### Claim 7 (depends on 6) The electronic device of claim 6, wherein the feedback path further includes a bypass path configured to bypass a component corresponding to the first frequency to the transceiver. ### Claim 8 (depends on 6) The electronic device of claim 6, wherein the amplification path further includes a filter configured to pass the component corresponding to the multiplied frequency. ### Claim 9 (depends on 1) The electronic device of claim 1, further comprising: a duplexer configured to connect the transmission path or a reception path to the antenna, wherein the feedback path is coupled to the transmission path through a coupler positioned between the at least one amplifier and the duplexer. ### Claim 10 (depends on 1) The electronic device of claim 1, wherein a component corresponding to the multiplied frequency is generated from a nonlinear characteristics of the at least one amplifier. ### Claim 11 A method of determining a state of an electronic device, the method comprising: transmitting a first signal of a first frequency through a transmission path connected to an antenna of the electronic device and including at least one amplifier; obtaining a transmission signal and a reflection signal of the transmission signal, which are associated with transmission of the first signal, through a feedback path coupled to the transmission path; obtaining first information about a first phase and a first magnitude, which are associated with the first frequency, and second information about a second phase and a second magnitude, which are associated with a multiplied frequency of the first frequency, from the transmission signal and the reflection signal; and determining the state of the electronic device based on the first information and the second information. ### Claim 12 (depends on 11) The method of claim 11, wherein the determining of the state of the electronic device includes: identifying information of an external object based on the first information and the second information; and determining the state of the electronic device based on the information of the external object, and wherein the information of the external object includes at least one of a distance, direction, or type of the external object. ### Claim 13 (depends on 11) The method of claim 11, wherein the determining of the state of the electronic device includes: comparing the first information and the second information with values stored in a memory of the electronic device to determine the state of the electronic device. ### Claim 14 (depends on 12) The method of claim 12, further comprising: adjusting transmission power associated with the electronic device based on the state of the electronic device. ### Claim 15 (depends on 11) The method of claim 11, wherein the transmission path is connected to the antenna through a duplexer connecting the transmission path or a reception path to the antenna, and wherein the feedback path is coupled to the transmission path through a coupler positioned between the duplexer and the antenna. ### Claim 16 (depends on 15) The method of claim 15, wherein the obtaining of the second information includes: amplifying a component corresponding to the multiplied frequency, using an amplifier of the feedback path. ### Claim 17 (depends on 16) The method of claim 16, wherein the obtaining of the first information includes: bypassing a component corresponding to the first frequency to a bypass path of the feedback path. ### Claim 18 (depends on 16) The method of claim 16, wherein the obtaining of the second information further includes: filtering the component corresponding to the multiplied frequency. ### Claim 19 (depends on 11) The method of claim 11, wherein the transmission path is connected to the antenna through a duplexer connecting the transmission path or a reception path to the antenna, and wherein the feedback path is coupled to the transmission path through a coupler positioned between the at least one amplifier and the duplexer. ### Claim 20 (depends on 11) The method of claim 11, wherein a component corresponding to the multiplied frequency is generated from a nonlinear characteristics of the at least one amplifier. ### Claim 21 (depends on 1) The electronic device of claim 1, wherein the reflection signal comprises a signal is reflected back to a communication circuit of the electronic device and reflected by an external object.