Granted Patent B2

US 12,431,920 · App. 18/154,896 · Granted Sep 30, 2025

Inventors: Hiromichi Kitajima (Kyoto, JP); Takanori Uejima (Kyoto, JP)

Assignee: MURATA MANUFACTURING CO., LTD.

H04B1/0057H04B1/04H04B2001/0408

Abstract

Claims (54)

1. A radio-frequency module comprising:

a first switch connected to an antenna connection terminal;

a first power amplifier;

a second power amplifier;

a first filter that has a passband comprising frequencies of at least part of a first communication band, and that has a first end connected to the antenna connection terminal via the first switch and a second end connected to the first power amplifier, the first communication band being included in a first communication band group;

a second filter that has a passband comprising frequencies of at least part of a second communication band, and that has a first end connected to the antenna connection terminal via the first switch and a second end connected to the second power amplifier, the second communication band being included in a second communication band group that is lower in frequency than the first communication band group; and

a module substrate having the first switch, the first power amplifier, the second power amplifier, the first filter, and the second filter arranged thereon,

wherein, in a plan view of the module substrate, a distance between the first power amplifier and the first switch is shorter than a distance between the second power amplifier and the first switch.

2. The radio-frequency module according to claim 1 , wherein, in the plan view of the module substrate, a distance between the first filter and the first switch is shorter than a distance between the second filter and the first switch.

3. The radio-frequency module according to claim 1 ,

wherein the first communication band is a communication band for frequency division duplex, and

wherein the first filter has a passband comprising frequencies of an uplink operating band of the first communication band, the radio-frequency module further comprising:

a first low noise amplifier; and

a third filter that is arranged on the module substrate, that has a passband comprising frequencies of a downlink operating band of the first communication band, and that has a first end connected to the antenna connection terminal via the first switch and a second end connected to the first low noise amplifier.

4. The radio-frequency module according to claim 3 , further comprising:

a second switch connected to the first power amplifier; and

a fourth filter that has a passband comprising frequencies of a third communication band for time division duplex included in the first communication band group, and that has a first end connected to the antenna connection terminal via the first switch and a second end connected to the first power amplifier via the second switch,

wherein the second end of the first filter is connected to the first power amplifier via the second switch.

5. The radio-frequency module according to claim 4 , wherein the third communication band is Band41 or Band40 for Long Term Evolution, or n41 or n40 for 5th Generation New Radio.

6. The radio-frequency module according to claim 4 , further comprising:

a third switch connected to the first low noise amplifier,

wherein the second end of the third filter is connected to the first low noise amplifier via the third switch, and

wherein the second end of the fourth filter is connected to the first low noise amplifier via the second and third switches.

7. The radio-frequency module according to claim 6 , wherein the fourth filter is arranged on the module substrate between the first power amplifier and the first switch.

8. The radio-frequency module according to claim 6 , wherein the second switch is arranged on the module substrate between the first power amplifier and the first switch.

9. The radio-frequency module according to claim 6 ,

wherein the second communication band is a communication band for the frequency division duplex, and

wherein the second filter has a passband comprising frequencies of an uplink operating band of the second communication band, the radio-frequency module further comprising:

a second low noise amplifier; and

a fifth filter that is arranged on the module substrate, that has a passband comprising frequencies of a downlink operating band of the second communication band, and that has a first end connected to the antenna connection terminal via the first switch and a second end connected to the second low noise amplifier.

10. The radio-frequency module according to claim 9 , further comprising:

a fourth switch connected to the second power amplifier;

a fifth switch connected to the second low noise amplifier; and

a sixth filter that has a passband comprising frequencies of a fourth communication band for the time division duplex included in the second communication band group, and that has a first end connected to the antenna connection terminal via the first switch, and a second end connected to the second power amplifier via the fourth switch and connected to the second low noise amplifier via the fourth switch and the fifth switch.

11. The radio-frequency module according to claim 10 , wherein the fourth communication band is Band34 or Band39 for Long Term Evolution, or n34 or n39 for 5th Generation New Radio.

12. The radio-frequency module according to claim 10 , wherein, in the plan view of the module substrate, a distance between the first switch and the second switch is shorter than a distance between the first switch and the fourth switch.

13. The radio-frequency module according to claim 10 , wherein the sixth filter is arranged on the module substrate between the second power amplifier and the first switch.

14. The radio-frequency module according to claim 10 , wherein the fourth switch is arranged on the module substrate between the second power amplifier and the first switch.

15. The radio-frequency module according to claim 10 ,

wherein the module substrate has a first main surface and a second main surface that are opposed to each other,

wherein the first switch, the second switch, the third switch, the fourth switch, the fifth switch, the first filter, the second filter, the third filter, the fourth filter, the fifth filter, the sixth filter, the first power amplifier, the second power amplifier, the first low noise amplifier, and the second low noise amplifier are arranged on the first main surface, and

wherein a plurality of external connection terminals is arranged on the second main surface.

16. The radio-frequency module according to claim 15 , further comprising:

a ground conductor that divides the first main surface into a first area, a second area, and a third area,

wherein the first power amplifier, the second power amplifier, the second switch, and the fourth switch are arranged in the first area,

wherein the first switch, the first filter, the second filter, the third filter, the fourth filter, the fifth filter, and the sixth filter are arranged in the second area, and

wherein the first low noise amplifier, the second low noise amplifier, the third switch, and the fifth switch are arranged in the third area.

17. The radio-frequency module according to claim 16 , wherein the ground conductor is a metal wall that stands on the first main surface.

18. The radio-frequency module according to claim 16 , further comprising:

resin that covers the first main surface; and

a shield electrode layer that covers a surface of the resin,

wherein at least a tip portion or side edge portion of the ground conductor is joined to the shield electrode layer.

19. The radio-frequency module according to claim 1 , wherein the first communication band is Band7 for Long Term Evolution, or n7 for 5th Generation New Radio.

20. The radio-frequency module according to claim 1 , wherein the second communication band is Band1, Band25, Band3, or Band66 for Long Term Evolution, or n1, n25, n3, or n66 for 5th Generation New Radio.

Assignments (1)

Priority Claims (1)

Continuity (2)

References Cited (17)