# US 12,191,828 B2 · Radio-frequency module and communication device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,191,828 B2 - Document ID: US12191828B2 - Status: Granted - Kind: B2 - Application number: 18/349,997 - Filed: 2023-07-11 - Published: 2023-11-09 - Granted: 2025-01-07 - Earliest claimed: 2020-07-16 - Assignees: Murata Manufacturing Co., Ltd. - Applicants: Murata Manufacturing Co., Ltd. - Inventors: Morio Takeuchi; Shigeru Tsuchida; Yukiya Yamaguchi - Web page: https://patentgrep.com/patent/US12191828B2 ## CPC - H03F 3/245: {with semiconductor devices only} - H03F 1/56: Modifications of input or output impedances, not otherwise provided for - H04B 1/40: Circuits - H04L 5/14: Two-way operation using the same type of signal, i.e. duplex - H03F 2200/222: A circuit being added at the input of an amplifier to adapt the input impedance of the amplifier - H03F 2200/387: A circuit being added at the output of an amplifier to adapt the output impedance of the amplifier - H03F 2200/451: the amplifier being a radio frequency amplifier - H04B 1/006: {using switches for selecting the desired band (H04B1/0057 takes precedence)} - H03F: AMPLIFIERS - H04B: TRANSMISSION - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A radio-frequency module includes a first power amplifier, a second power amplifier, a switch, a plurality of first filters, and a second filter. The first power amplifier amplifies a transmission signal of a first frequency band and outputs the amplified transmission signal. The second power amplifier amplifies a transmission signal of a second frequency band and outputs the amplified transmission signal. The pass bands of the plurality of first filters are contained within the first frequency band. The pass band of the second filter is contained within the second frequency band. The second power amplifier has a greater output power level than the first power amplifier. The first output terminal of the first power amplifier is switchably connectable to the plurality of first filters via the switch. The second output terminal of the second power amplifier is connected to the second filter without the switch interposed therebetween. ## Claims ### Claim 1 A radio-frequency module comprising: a first antenna terminal; a second antenna terminal; a first switch that has a first common terminal connected to the first antenna terminal, a second common terminal connected to the second antenna terminal, a first selection terminal and a second selection terminal connectable to the first common terminal, and a third selection terminal connectable to the second common terminal; a second switch that has a fourth selection terminal connected to the first selection terminal, a fifth selection terminal connected to the second selection terminal, and a third common terminal connectable to the fourth selection terminal and the fifth selection terminal; a first filter connected to between the first selection terminal and the fourth selection terminal; a second filter connected to between the second selection terminal and the fifth selection terminal; a first power amplifier connected to the third common terminal; a second power amplifier connected to the third selection terminal; and a third filter connected to between the third selection terminal and the second power amplifier, wherein the first power amplifier is configured to amplify a first transmission signal within a first frequency band and output the amplified first transmission signal, the second power amplifier is configured to amplify a second transmission signal within a second frequency band, which is different from the first frequency band, and output the amplified second transmission signal, a pass band of the first filter is contained a first communication band within the first frequency band, a pass band of the second filter is contained a second communication band within the first frequency band, a pass band of the third filter is contained a third communication band within the second frequency band, an output power level of the second transmission signal of the second antenna terminal is greater than an output power level of the first transmission signal of the first antenna terminal, and the second power amplifier is connected to the third filter without a switch interposed therebetween. ### Claim 2 (depends on 1) The radio-frequency module according to claim 1, wherein the first communication band and the second communication band are a frequency division duplexing (FDD) band, and the third communication band is a time division duplexing (TDD) band. ### Claim 3 (depends on 1) The radio-frequency module according to claim 1, wherein the second frequency band is a frequency band located at a higher frequency than the first frequency band. ### Claim 4 (depends on 2) The radio-frequency module according to claim 2, wherein the second frequency band is a frequency band located at a higher frequency than the first frequency band. ### Claim 5 (depends on 1) The radio-frequency module according to claim 1, wherein the first transmission signal and the second transmission signal are configured to communicate simultaneously. ### Claim 6 (depends on 1) The radio-frequency module according to claim 1, further comprising: a controller that controls the first power amplifier and the second power amplifier, wherein the controller has a first mode in which the first power amplifier and the second power amplifier are controlled to simultaneously operate and a second mode in which only one out of the first power amplifier and the second power amplifier is controlled to operate. ### Claim 7 (depends on 4) The radio-frequency module according to claim 4, further comprising: a controller that controls the first power amplifier and the second power amplifier, wherein the controller has a first mode in which the first power amplifier and the second power amplifier are controlled to simultaneously operate and a second mode in which only one out of the first power amplifier and the second power amplifier is controlled to operate. ### Claim 8 (depends on 7) The radio-frequency module according to claim 7, wherein the first transmission signal and the second transmission signal are configured to communicate simultaneously. ### Claim 9 (depends on 1) The radio-frequency module according to claim 1, further comprising: amounting substrate having a first main surface and a second main surface on opposite sides of the mounting surface; and a plurality of external connection terminals that are disposed on the second main surface of the mounting substrate, wherein the first filter, the second filter, the first power amplifier, the second power amplifier, and the third filter are disposed on the first main surface, and the first switch and the second switch are disposed on the second main surface. ### Claim 10 (depends on 8) The radio-frequency module according to claim 8, further comprising: amounting substrate having a first main surface and a second main surface on opposite sides of the mounting surface; and a plurality of external connection terminals that are disposed on the second main surface of the mounting substrate, wherein the first filter, the second filter, the first power amplifier, the second power amplifier, and the third filter are disposed on the first main surface, and the first switch and the second switch are disposed on the second main surface. ### Claim 11 A radio-frequency module comprising: a first antenna terminal; a second antenna terminal; a first switch that has a first common terminal connected to the first antenna terminal, a second common terminal connected to the second antenna terminal, a first selection terminal and a second selection terminal connectable to the first common terminal, and a third selection terminal connectable to the second common terminal; a second switch that has a fourth selection terminal connected to the first selection terminal, a fifth selection terminal connected to the second selection terminal, and a third common terminal connectable to the fourth selection terminal and the fifth selection terminal; a first filter connected to between the first selection terminal and the fourth selection terminal; a second filter connected to between the second selection terminal and the fifth selection terminal; a first power amplifier connected to the third common terminal; a second power amplifier connected to the third selection terminal; and a third filter connected to between the third selection terminal and the second power amplifier, wherein the first power amplifier is configured to amplify a first transmission signal within a first frequency band and output the amplified first transmission signal, the second power amplifier is configured to amplify a second transmission signal within a second frequency band, which is different from the first frequency band, and output the amplified second transmission signal, a pass band of the first filter is contained a first communication band within the first frequency band, a pass band of the second filter is contained a second communication band within the first frequency band, a pass band of the third filter is contained a third communication band within the second frequency band, an output power level of the second power amplifier is greater than an output power level of the first power amplifier, and the second power amplifier is connected to the third filter without a switch interposed therebetween. ### Claim 12 (depends on 11) The radio-frequency module according to claim 11, wherein the first communication band and the second communication band are a frequency division duplexing (FDD) band, and the third communication band is a time division duplexing (TDD) band. ### Claim 13 (depends on 11) The radio-frequency module according to claim 11, wherein the second frequency band is a frequency band located at a higher frequency than the first frequency band. ### Claim 14 (depends on 12) The radio-frequency module according to claim 12, wherein the second frequency band is a frequency band located at a higher frequency than the first frequency band. ### Claim 15 (depends on 11) The radio-frequency module according to claim 11, wherein the first transmission signal and the second transmission signal are configured to communicate simultaneously. ### Claim 16 (depends on 11) The radio-frequency module according to claim 11, further comprising: a controller that controls the first power amplifier and the second power amplifier, wherein the controller has a first mode in which the first power amplifier and the second power amplifier are controlled to simultaneously operate and a second mode in which only one out of the first power amplifier and the second power amplifier is controlled to operate. ### Claim 17 (depends on 14) The radio-frequency module according to claim 14, further comprising: a controller that controls the first power amplifier and the second power amplifier, wherein the controller has a first mode in which the first power amplifier and the second power amplifier are controlled to simultaneously operate and a second mode in which only one out of the first power amplifier and the second power amplifier is controlled to operate. ### Claim 18 (depends on 17) The radio-frequency module according to claim 17, wherein the first transmission signal and the second transmission signal are configured to communicate simultaneously. ### Claim 19 (depends on 11) The radio-frequency module according to claim 11, further comprising: amounting substrate having a first main surface and a second main surface on opposite sides of the mounting surface; and a plurality of external connection terminals that are disposed on the second main surface of the mounting substrate, wherein the first filter, the second filter, the first power amplifier, the second power amplifier, and the third filter are disposed on the first main surface, and the first switch and the second switch are disposed on the second main surface. ### Claim 20 (depends on 18) The radio-frequency module according to claim 18, further comprising: a mounting substrate having a first main surface and a second main surface on opposite sides of the mounting surface; and a plurality of external connection terminals that are disposed on the second main surface of the mounting substrate, wherein the first filter, the second filter, the first power amplifier, the second power amplifier, and the third filter are disposed on the first main surface, and the first switch and the second switch are disposed on the second main surface.