# US 12,113,559 B2 · Multi-band radio frequency front-end device, multi-band receiver, and multi-band transmitter > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,113,559 B2 - Document ID: US12113559B2 - Status: Granted - Kind: B2 - Application number: 18/315,896 - Filed: 2023-05-11 - Published: 2023-09-07 - Granted: 2024-10-08 - Earliest claimed: 2018-12-29 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Keji Cui; Di Li; Lei Lu - Web page: https://patentgrep.com/patent/US12113559B2 ## CPC - H04B 1/0458: {Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages (matching circuits in general H03H)} - H04B 1/0057: {using diplexing or multiplexing filters for selecting the desired band} - H04B 1/406: {with more than one transmission mode, e.g. analog and digital modes} - H04B 2001/0416: {having gain or transmission power control} - H04B 2001/307: {using n-port mixer} - Y02D 30/70: in wireless communication networks - H04B: TRANSMISSION - 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 A multi-band radio frequency front-end device, a multi-band receiver, and a multi-band transmitter, the multi-band radio frequency front-end device including a first radio frequency front-end circuit, where the first radio frequency front-end circuit works on a first band, a second radio frequency front-end circuit, where the second radio frequency front-end circuit works on a second band, a first input/output matching network, and a second input/output matching network, where routing of the first input/output matching network and routing of the second input/output matching network on a layout are annular and nested. ## Claims ### Claim 1 A multi-band radio frequency front-end device, comprising: a first amplifier operable in a first band; a second amplifier operable in a second band, wherein a frequency of the first band is higher than a frequency of the second band; a first matching network, coupled to the first amplifier; and a second matching network, coupled to the second amplifier, wherein routing of the first matching network and routing of the second matching network within a layout are annular and nested. ### Claim 2 (depends on 1) The multi-band radio frequency front-end device according to claim 1, wherein the first matching network comprises a first output matching network coupled to an output end of the first amplifier; wherein the second matching network comprises a second output matching network coupled to an output end of the second amplifier; and wherein a parameter of the first output matching network is based on the first band, and a parameter of the second output matching network is based on the second band. ### Claim 3 (depends on 2) The multi-band radio frequency front-end device according to claim 2, wherein the first output matching network and the second output matching network each comprise one of a transformer, an inductor, or a balun. ### Claim 4 (depends on 3) The multi-band radio frequency front-end device according to claim 3, wherein the first output matching network comprises a first primary coil and a first secondary coil, wherein the second output matching network comprises a second primary coil and a second secondary coil, wherein the first primary coil is embedded in the second primary coil, and wherein the first secondary coil is embedded in the second secondary coil. ### Claim 5 (depends on 4) The multi-band radio frequency front-end device according to claim 4, wherein a quantity of coil turns of each of the first primary coil, the second primary coil, the first secondary coil, and the second secondary coil is 1, wherein the first primary coil and the second primary coil are embedded at a same layer, and wherein the first secondary coil and the second secondary coil are embedded at another layer. ### Claim 6 (depends on 4) The multi-band radio frequency front-end device according to claim 4, wherein a quantity of coil turns of each of the first primary coil and the second primary coil is n, wherein n is an integer greater than 1, wherein the first primary coil and the second primary coil are disposed at at least two layers, and wherein the first primary coil is embedded in the second primary coil at any layer of the at least two layers. ### Claim 7 (depends on 4) The multi-band radio frequency front-end device according to claim 4, wherein a quantity of coil turns of each of the first secondary coil and the second secondary coil is n, wherein n is an integer greater than 1, wherein the first secondary coil and the second secondary coil are disposed at at least two layers, and wherein the first secondary coil is embedded in the second secondary coil at any layer of the at least two layers. ### Claim 8 (depends on 2) The multi-band radio frequency front-end device according to claim 2, wherein the first output matching network and the second output matching network are packaged in a differential output manner or a single-ended output manner. ### Claim 9 (depends on 1) The multi-band radio frequency front-end device according to claim 1, wherein the first matching network comprises a first input matching network coupled to an input end of the first amplifier; wherein the second matching network comprises a second input matching network coupled to an input end of the second amplifier; and wherein a parameter of the first input matching network is based on the first band, and wherein a parameter of the second input matching network is based on the second band. ### Claim 10 (depends on 9) The multi-band radio frequency front-end device according to claim 9, wherein the first input matching network and the second input matching network each comprise one of a transformer, an inductor, or a balun. ### Claim 11 (depends on 1) The multi-band radio frequency front-end device according to claim 1, wherein the first amplifier and the second amplifier each comprise one of a power amplifier, a low noise amplifier, or a variable gain amplifier. ### Claim 12 (depends on 1) The multi-band radio frequency front-end device according to claim 1, wherein the first amplifier and the second amplifier each have an independent active bias circuit. ### Claim 13 (depends on 1) The multi-band radio frequency front-end device according to claim 1, wherein the first band covers a band n260, and wherein the second band covers at least one band in n257, n258, or n261. ### Claim 14 A multi-band receiver, comprising: a first receive channel, configured to process a signal on a band n260; and a second receive channel, configured to process a signal on at least one band in n257, n258, or n261; wherein the first receive channel comprises a first matching network and a radio frequency front-end circuit operable on the band n260 and connected to the first matching network, and wherein the first matching network supports the band n260; wherein the second receive channel comprises a second matching network, and the second matching network supports a band in n257, n258, and n261; and wherein routing of the first matching network and routing of the second matching network within a layout are annular and nested. ### Claim 15 A multi-band transmitter, comprising: a first transmit channel, configured to process a signal on a band n260; and a second transmit channel, configured to process a signal on at least one band in n257, n258, or n261; wherein the first transmit channel comprises a first matching network and a radio frequency front-end circuit connected to the first matching network, and wherein the first matching network supports the band n260; wherein the second transmit channel comprises a second matching network, and wherein the second matching network supports a band in n257, n258, and n261; and wherein routing of the first matching network and routing of the second matching network on a layout are annular and nested. ### Claim 16 (depends on 15) The transmitter of claim 15, further comprising: a first amplifier operable in a first band and disposed in the radio frequency front-end circuit; and a second amplifier operable in a second band; wherein the first matching network is coupled to the first amplifier; and wherein the second matching network is coupled to the second amplifier, wherein routing of the first matching network and routing of the second matching network within a layout are annular and nested. ### Claim 17 (depends on 16) The transmitter of claim 16, wherein the first matching network comprises a first output matching network coupled to an output end of the first amplifier; wherein the second matching network comprises a second output matching network coupled to an output end of the second amplifier; and wherein a parameter of the first output matching network is based on the first band, and a parameter of the second output matching network is based on the second band. ### Claim 18 (depends on 17) The transmitter of claim 17, wherein the first output matching network comprises a first primary coil and a first secondary coil, wherein the second output matching network comprises a second primary coil and a second secondary coil, wherein the first primary coil is embedded in the second primary coil, and wherein the first secondary coil is embedded in the second secondary coil. ### Claim 19 (depends on 18) The transmitter of claim 18, wherein a quantity of coil turns of each of the first primary coil, the second primary coil, the first secondary coil, and the second secondary coil is 1, wherein the first primary coil and the second primary coil are embedded at a same layer, and wherein the first secondary coil and the second secondary coil are embedded at another layer. ### Claim 20 (depends on 18) The transmitter of claim 18, wherein a quantity of coil turns of each of the first primary coil and the second primary coil is n, wherein n is an integer greater than 1, wherein the first primary coil and the second primary coil are disposed at at least two layers, and wherein the first primary coil is embedded in the second primary coil at any layer of the at least two layers.