High-frequency module and communication apparatus

Patent metadata

Field	Value
Publication number	US-2022246345-A1
Application number	US-202217660032-A
Country	US
Kind code	A1
Filing date	Apr 21, 2022
Priority date	Dec 20, 2019
Publication date	Aug 4, 2022
Grant date	—

Abstract

Coupling between inductors is restrained, and the layout area of a substrate is also ensured. A high-frequency module includes a mounting substrate, a first inductor, a second inductor, at least one high-frequency component, a shield layer, and a conductive member. The mounting substrate has a main surface. The first inductor is located on a main surface side of the mounting substrate. The second inductor is located on the main surface side of the mounting substrate. The high-frequency component is located on the main surface side of the mounting substrate and between the first inductor and the second inductor. The shield layer is connected to the ground. The conductive member connects the high-frequency component and the shield layer. The conductive member is connected to a main surface of the high-frequency component, the main surface facing the shield layer.

First claim

1 . A high-frequency module comprising:
a mounting substrate having a main surface; a first inductor located on a main surface side of the mounting substrate facing the main surface; a second inductor located on the main surface side of the mounting substrate; at least one high-frequency component located on the main surface side of the mounting substrate and between the first inductor and the second inductor; a shield layer connected to ground; and a conductive member connecting the high-frequency component and the shield layer, wherein the conductive member is connected to a main surface of the high-frequency component, the main surface of the high-frequency component facing the shield layer.

2 . The high-frequency module according to claim 1 ,
wherein the conductive member includes a conductive wire.

3 . The high-frequency module according to claim 2 ,
wherein the at least one high-frequency component comprises a plurality of high-frequency components, and wherein the conductive wire is connected to the plurality of high-frequency components.

4 . The high-frequency module according to claim 1 ,
wherein the conductive member includes a conductive pillar.

5 . The high-frequency module according to claim 1 ,
wherein the conductive member includes a metal block.

6 . The high-frequency module according to claim 1 ,
wherein in a depth direction of the mounting substrate, a height of the high-frequency component is lower than at least one of a height of the first inductor and a height of the second inductor.

7 . The high-frequency module according to claim 6 ,
wherein in the depth direction of the mounting substrate, the height of the high-frequency component is lower than each of the height of the first inductor and the height of the second inductor.

8 . The high-frequency module according to claim 1 , further comprising:
a resin layer disposed between the high-frequency component and the shield layer.

9 . The high-frequency module according to claim 1 ,
wherein the high-frequency component is a reception filter allowing a reception signal from an antenna to pass through the reception filter, a transmission filter allowing a transmission signal to the antenna to pass through the transmission filter, or a duplexer including both of the reception filter and the transmission filter.

10 . The high-frequency module according to claim 1 ,
wherein the first inductor is a first matching inductor disposed on a signal path between the high-frequency component and a power amplifier, the power amplifier amplifying the transmission signal to the antenna, a second matching inductor disposed on a signal path between the high-frequency component and a low-noise amplifier, the low-noise amplifier amplifying the reception signal from the antenna, or a third matching inductor disposed on a signal path between the high-frequency component and the antenna, and wherein the second inductor is the first matching inductor, the second matching inductor, or the third matching inductor and is different from the first inductor.

11 . The high-frequency module according to claim 1 ,
wherein the mounting substrate has a first main surface serving as the main surface of the mounting substrate and a second main surface opposite from the first main surface, and the high-frequency module further comprises an external connection terminal located on the second main surface of the mounting substrate, wherein another component different from the first inductor, the second inductor, and the high-frequency component, wherein the first inductor, the second inductor, and the high-frequency component are located on a first main surface side of the mounting substrate, and wherein the other component is located on a second main surface side of the mounting substrate facing the second main surface.

12 . The high-frequency module according to claim 11 ,
wherein the other component is an IC chip including at least the low-noise amplifier, wherein the high-frequency component is the reception filter allowing the reception signal from the antenna to pass through the reception filter, or the duplexer including both of the reception filter and the transmission filter allowing the transmission signal to the antenna to pass through the transmission filter, and wherein the IC chip overlaps with at least part of the high-frequency component in the depth direction of the mounting substrate.

13 . The high-frequency module according to claim 1 ,
wherein the conductive member is electrically connected to the ground with a through-hole electrode, a side electrode, or the conductive wire interposed between the ground and the through-hole electrode, the side electrode, or the conductive wire, the through-hole electrode penetrating through the high-frequency component in a depth direction of the high-frequency component, the side electrode being disposed over a side surface of the high-frequency component.

14 . A communication apparatus comprising:
the high-frequency module according to claim 1 ; and a signal processing circuit processing the reception signal from the antenna and the transmission signal to the antenna.

15 . The high-frequency module according to claim 2 ,
wherein the conductive member includes a conductive pillar.

16 . The high-frequency module according to claim 3 ,
wherein the conductive member includes a conductive pillar.

17 . The high-frequency module according to claim 2 ,
wherein the conductive member includes a metal block.

18 . The high-frequency module according to claim 3 ,
wherein the conductive member includes a metal block.

19 . The high-frequency module according to claim 4 ,
wherein the conductive member includes a metal block.

20 . The high-frequency module according to claim 2 ,
wherein in a depth direction of the mounting substrate, a height of the high-frequency component is lower than at least one of a height of the first inductor and a height of the second inductor.

Assignees

• Murata Manufacturing Co

Inventors

• Kita Terumichi

Classifications

• H10W90/00

  Package configurations · CPC title

• H10W74/00

  Encapsulations, e.g. protective coatings · CPC title

• H10W70/60

  Insulating or insulated package substrates; Interposers; Redistribution layers (leadframes H10W70/40) · CPC title

• H10W99/00

  Subject matter not provided for in other groups of this subclass · CPC title

• H10W95/00

  Packaging processes not covered by the other groups of this subclass · CPC title