# US 12,771,025 B2 · Phased array and electronic device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,771,025 B2 - Document ID: US12771025B2 - Status: Granted - Kind: B2 - Application number: 18/345,373 - Filed: 2023-06-30 - Published: 2023-10-26 - Granted: 2026-10-20 - Earliest claimed: 2020-12-31 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Keji Cui; Di Li; Peng Gao; Yongchang Yu - Web page: https://patentgrep.com/patent/US12771025B2 ## CPC - H01Q 3/36: with variable phase-shifters - H03K 5/00006: {Changing the frequency (modulating pulses H03K7/00; frequency dividers H03K21/00 - H03K29/00; additive or subtractive mixing of two pulse rates into one G06F7/605; pulse rate dividers G06F7/68)} - H04B 7/0617: {for beam forming} - H03K 2005/00286: {Phase shifter, i.e. the delay between the output and input pulse is dependent on the frequency, and such that a phase difference is obtained independent of the frequency} - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) - H03K: PULSE TECHNIQUE (measuring pulse characteristics G01R; modulating sinusoidal oscillations with pulses H03C; transmission of digital information H04L; discriminator circuits detecting phase difference between two signals by counting or integrating cycles of oscillation H03D3/04; automatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses where the type of generator is irrelevant or unspecified H03L; coding, decoding or code conversion, in general H03M) - H04B: TRANSMISSION ## Abstract A phased array includes a local oscillator signal adjustment path, a first adder, a first power divider, and a plurality of radio-frequency signal transmit channels. An output end of the local oscillator signal adjustment path is coupled to a first input end of the first adder, and is configured to input a first signal to the first adder. A second input end of the first adder is coupled to a transmit path, and is configured to receive a second signal, and the first adder superimposes the first signal on the second signal to generate a to-be-transmitted signal. An input end of the first power divider is coupled to an output end of the first adder, an output end of the first power divider is coupled to input ends of the plurality of radio-frequency signal transmit channels. ## Claims ### Claim 1 An apparatus, comprising: a local oscillator signal adjustment path comprising: a first input end configured to: couple to a first local oscillator signal source; and receive a first local oscillator signal, wherein the local oscillator signal adjustment path is configured to adjust the first local oscillator signal to generate a first signal; and a first output end configured to send the first signal; a first adder comprising: a second input end coupled to the first output end and configured to receive the first signal; a third input end configured to be coupled to a transmit path and configured to receive a second signal, wherein the first adder is configured to superpose the first signal on the second signal to generate a to-be-transmitted signal; and a second output end configured to send the to-be-transmitted signal; a first power divider comprising: a fourth input end coupled to the second output end and configured to receive the to-be-transmitted signal, wherein the first power divider is configured to divide the to-be-transmitted signal into a plurality of transmit signals; and a third output end configured to send the plurality of transmit signals; and a plurality of radio-frequency signal transmit channels comprising: fifth input ends coupled to the third output ends and configured to receive the plurality of transmit signals from the third output ends, wherein the plurality of radio-frequency signal transmit channels are configured to process the plurality of transmit signals to generate processed transmit signals; and fifth output ends configured to be coupled to a plurality of antennas and configured to transmit, through the plurality of antennas, the processed transmit signals. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the local oscillator signal adjustment path further comprises a variable gain amplifier configured to perform, on the first local oscillator signal, amplitude adjustment. ### Claim 3 (depends on 1) The apparatus of claim 1, wherein the local oscillator signal adjustment path further comprises a phase shifter configured to perform, on the first local oscillator signal, phase adjustment. ### Claim 4 (depends on 1) The apparatus of claim 1, wherein the local oscillator signal adjustment path further comprises a frequency multiplier configured to perform, on the first local oscillator signal, frequency adjustment. ### Claim 5 (depends on 1) The apparatus of claim 1, further comprising the transmit path, wherein the transmit path comprises: an intermediate-frequency signal processor comprising a sixth output end; and a first frequency mixer comprising: a sixth input end coupled to the sixth output end; a seventh input end configured to be coupled to the first local oscillator signal source; and a seventh output end coupled to the third input end and configured to send the second signal. ### Claim 6 (depends on 5) The apparatus of claim 5, wherein the transmit path further comprises a second frequency mixer comprising: an eighth input end coupled to the sixth output end; a ninth input end configured to be coupled to a second local oscillator signal source; and an eighth output end coupled to the sixth input end. ### Claim 7 (depends on 5) The apparatus of claim 5, wherein the transmit path further comprises: a stray adjustment circuit comprising: an eighth input end coupled to the first local oscillator signal source and configured to receive the first local oscillator signal; a ninth input end coupled to the intermediate-frequency signal processor and configured to receive an intermediate-frequency signal; and an eighth output end, wherein the stray adjustment circuit is configured to: generate, based on the first local oscillator signal and the intermediate-frequency signal, a third signal; and send, through the eighth output end, the third signal; and a second adder comprising: a tenth input end coupled to the eighth output end and configured to receive the third signal; an eleventh input end coupled to the seventh output end and configured to receive a fourth signal from the first frequency mixer; and a ninth output end coupled to the second input end, and wherein the second adder is configured to superpose the third signal on the fourth signal to generate the second signal. ### Claim 8 (depends on 7) The apparatus of claim 7, wherein the ninth input end is coupled to the second output end, wherein the eighth output end is coupled to the tenth input end, wherein the seventh output end is coupled to the eleventh input end, wherein the ninth output end is coupled to the third input end, wherein the stray adjustment circuit is further configured to: generate, based on the first local oscillator signal and a fifth signal from the first adder, a sixth signal; and provide, to the second adder, the sixth signal, and wherein the second adder is configured to superpose the sixth signal on the fourth signal to generate the to-be-transmitted signal. ### Claim 9 (depends on 7) The apparatus of claim 7, wherein the stray adjustment circuit comprises a phase shifter and a second frequency mixer, wherein the second frequency mixer comprises a twelfth input end, a thirteenth input end, and a tenth output end, wherein the phase shifter is coupled between the first local oscillator signal source and the twelfth input end, wherein the thirteenth input end is coupled to the second output end or the sixth output end, and wherein the tenth output end is coupled to the tenth input end. ### Claim 10 (depends on 7) The apparatus of claim 7, wherein the stray adjustment circuit further comprises a phase shifter coupled between the first local oscillator signal source and the seventh input end. ### Claim 11 (depends on 7) The apparatus of claim 7, wherein the stray adjustment circuit further comprises a phase shifter comprising: a twelfth input end coupled to the sixth output end or the second output end; and a tenth output end configured to be coupled to a thirteenth input end of a second frequency mixer. ### Claim 12 (depends on 7) The apparatus of claim 7, wherein the plurality of radio-frequency signal transmit channels further comprises the stray adjustment circuit and the second adder, wherein the seventh input end is configured to be coupled to a tenth output end of a second power divider, wherein the ninth input end is coupled to the third output end, wherein the eighth output end is coupled to the tenth input end, wherein the seventh output end is coupled to the eleventh input end, wherein the tenth output end is coupled to the third input end, wherein the stray adjustment circuit is further configured to process one of a plurality of local oscillator signals and one of the plurality of transmit signals, and wherein the second adder is configured to superpose a fifth signal from the stray adjustment circuit on the fourth signal. ### Claim 13 (depends on 12) The apparatus of claim 12, wherein the stray adjustment circuit further comprises a first phase shifter and a second frequency mixer, wherein the first phase shifter is coupled between the ninth output end and a twelfth input end of the second frequency mixer, wherein a thirteenth input end of the second frequency mixer is coupled to the third output end, and wherein an eleventh output end of the second frequency mixer is coupled to the tenth input end. ### Claim 14 (depends on 13) The apparatus of claim 13, wherein the stray adjustment circuit further comprises a second phase shifter, and wherein the second phase shifter is coupled between the ninth output end and the seventh input end. ### Claim 15 (depends on 1) The apparatus of claim 1, further comprising the transmit path, wherein the transmit path comprises an intermediate-frequency signal processor, and wherein the intermediate-frequency signal processor comprises a sixth output end coupled to the third input end and configured to send the second signal. ### Claim 16 (depends on 15) The apparatus of claim 15, further comprising a first frequency mixer comprising: a sixth input end coupled to the second output end; and a seventh output end coupled to the fourth input end. ### Claim 17 (depends on 15) The apparatus of claim 15, further comprising a second power divider comprising an eighth output end configured to: perform, on a first local oscillator signal, power division to generate a plurality of local oscillator signals; and send, through the eighth output end, the plurality of local oscillator signals, wherein the plurality of radio-frequency signal transmit channels further comprises first frequency mixers comprising: sixth input ends coupled to the third output end and configured to receive the plurality of transmit signals; and seventh input ends coupled to the eighth output ends and configured to receive the plurality of local oscillator signals, and wherein the first frequency mixers are configured to mix the plurality of local oscillator signals with the plurality of transmit signals. ### Claim 18 (depends on 1) The apparatus of claim 1, wherein the plurality of radio-frequency signal transmit channels further comprises phase shifters configured to perform, on the plurality of transmit signals, phase shifting. ### Claim 19 An apparatus, comprising: a circuit board comprising: one or more processors; and a transceiver coupled to the one or more processors and comprising: a phased array comprising: a local oscillator signal adjustment path comprising: a first input end configured to: couple to a first local oscillator signal source; and receive a first local oscillator signal, wherein the local oscillator signal adjustment path is configured to adjust the first local oscillator signal to generate a first signal; and a first output end configured to send the first signal; a first adder comprising: a second input end coupled to the first output end and configured to receive the first signal; a third input end configured to be coupled to a transmit path and configured to receive a second signal, wherein the first adder is configured to superpose the first signal on the second signal to generate a to-be-transmitted signal; and a second output end configured to send the to-be-transmitted signal; a first power divider comprising: a fourth input end coupled to the second output end and configured to receive the to-be-transmitted signal, wherein the first power divider is configured to divide the to-be-transmitted signal into a plurality of transmit signals; and a third output end configured to send the plurality of transmit signals; and a plurality of radio-frequency signal transmit channels comprising: fifth input ends coupled to the third output ends and configured to receive the plurality of transmit signals, wherein the plurality of radio-frequency signal transmit channels are configured to process the plurality of transmit signals to generate processed transmit signals; and fifth output ends configured to be coupled to a plurality of antennas and configured to transmit, through the plurality of antennas, the processed transmit signals. ### Claim 20 An apparatus, comprising: a local oscillator signal adjustment path comprising a first output end configured to send a first signal; a transmit path comprising an intermediate-frequency signal processor, wherein the intermediate-frequency signal processor comprises a second output end configured to send a second signal; a first adder comprising: a first input end coupled to the first output end and configured to receive the first signal; a second input end coupled to the second output end and of the transmit path and configured to receive the second signal, wherein the first adder is configured to superpose the first signal on the second signal to generate a to-be-transmitted signal; and a third output end configured to send the to-be-transmitted signal; a first power divider comprising: a third input end coupled to the third output end and configured to receive the to-be-transmitted signal, wherein the first power divider is configured to divide the to-be-transmitted signal into a plurality of transmit signals; and fourth output ends configured to send the plurality of transmit signals; and a plurality of radio-frequency signal transmit channels comprising: fourth input ends coupled to the fourth output ends and configured to receive the plurality of transmit signals from the fourth output ends, wherein the plurality of radio-frequency signal transmit channels are configured to process the plurality of transmit signals to generate processed transmit signals; and fifth output ends configured to be coupled to a plurality of antennas and configured to transmit, through the plurality of antennas, the processed transmit signals.