公开(公告)号：US11223377B2

公开(公告)日：2022-01-11

申请号：US17037938

申请日：2020-09-30

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hiroyuki Kani

IPC: H04B1/04

Abstract: A front-end circuit includes a power amplifier circuit configured to amplify power of multiple transmission waves having different frequency bands, a transmission filter provided between the power amplifier circuit and an antenna and configured to pass a predetermined transmission frequency band of an output signal of the power amplifier circuit, a switch provided between the power amplifier circuit and the antenna, and a matching circuit. In accordance with switching of whether the matching circuit is connected, an insertion loss in a frequency band of an intermodulation distortion within a communication band in an intra-band carrier aggregation mode is increased as compared to an insertion loss in a frequency band of an intermodulation distortion within the communication band in a single mode.

公开(公告)号：US12074624B2

公开(公告)日：2024-08-27

申请号：US18311426

申请日：2023-05-03

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hiroyuki Kani ,  Tomohiro Sano

IPC: H04B1/04 ,  H04B1/00 ,  H04B1/16

CPC classification number: H04B1/1615 ,  H04B1/006 ,  H04B1/04 ,  H04B2001/0408

Abstract: In simultaneous communication using multiple frequency bands, the degradation in the communication quality is suppressed. The radio-frequency front-end circuit (1) includes an antenna terminal (2), a transmit filter (3), a receive filter, a transport filter, a switch (6), and a phase adjusting circuit (7). The switch (6) is capable of connecting the antenna terminal (2) to the transmit filter (3) or the receive filter and the transport filter simultaneously. The transmit filter (3) is disposed on a transmission path (T1). The receive filter is disposed on a reception path. The transport filter is disposed on a transport path. The phase adjusting circuit (7) is disposed on at least one of paths, the transmission path (T1), the reception path, and a reception/transmission path.

公开(公告)号：US11381261B2

公开(公告)日：2022-07-05

申请号：US17368958

申请日：2021-07-07

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Motoji Tsuda ,  Yusuke Naniwa ,  Morio Takeuchi ,  Atsushi Horita ,  Jin Yokoyama ,  Sho Matsumoto ,  Syunsuke Kido ,  Yukiya Yamaguchi ,  Hiroyuki Kani

IPC: H04M1/00 ,  H04B1/00 ,  H04B1/16

Abstract: A radio-frequency module includes a transmission path which has one end connected to a transmission terminal and on which a transmission signal in Band A is transmitted; a reception path (62) which has one end connected to a reception terminal (120B) and on which a reception signal in Band B is transmitted; a reception path (63) which has one end connected to a reception terminal (120C) and on which a reception signal in Band C is transmitted; a switch (11) having a common terminal (11a) and selection terminals (11b and 11c); and a switch (12) having a common terminal (12a) and selection terminals (12b and 12c).

公开(公告)号：US11483019B2

公开(公告)日：2022-10-25

申请号：US17351867

申请日：2021-06-18

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Motoji Tsuda ,  Yukiya Yamaguchi ,  Sho Matsumoto ,  Hiroyuki Kani ,  Atsushi Horita ,  Morio Takeuchi ,  Yusuke Naniwa ,  Jin Yokoyama

IPC: H04B1/04 ,  H04B1/00 ,  H04B1/10 ,  H04B1/50

Abstract: A radio-frequency module includes a switch performing switching of the connection between a common terminal and a selection terminal, a reception filter having a reception band in a band A as a passband, a transmission filter that has a transmission band in a band B as a passband and has an output terminal connected to the selection terminal, a filter that has the transmission band in a band B as an attenuation band and has an input terminal connected to the selection terminal, a reception path which connects the selection terminal and an input terminal of the reception filter and on which the filter is disposed, a bypass path which connects the selection terminal and the input terminal of the reception filter and on which no filter is disposed, and a transmission path which connects the selection terminal and a transmission terminal and on which the transmission filter is disposed.

公开(公告)号：US12301270B2

公开(公告)日：2025-05-13

申请号：US18595989

申请日：2024-03-05

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hiroyuki Kani ,  Tomohiro Sano

IPC: H04B1/04 ,  H04B1/00 ,  H04B1/16

Abstract: In simultaneous communication using multiple frequency bands, the degradation in the communication quality is suppressed. The radio-frequency front-end circuit (1) includes an antenna terminal (2), a transmit filter (3), a receive filter, a transport filter, a switch (6), and a phase adjusting circuit (7). The switch (6) is capable of connecting the antenna terminal (2) to the transmit filter (3) or the receive filter and the transport filter simultaneously. The transmit filter (3) is disposed on a transmission path (T1). The receive filter is disposed on a reception path. The transport filter is disposed on a transport path. The phase adjusting circuit (7) is disposed on at least one of paths, the transmission path (T1), the reception path, and a reception/transmission path.

公开(公告)号：US11677427B2

公开(公告)日：2023-06-13

申请号：US17380400

申请日：2021-07-20

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hiroyuki Kani ,  Tomohiro Sano

IPC: H04B1/04 ,  H04B1/00 ,  H04B1/16

CPC classification number: H04B1/1615 ,  H04B1/006 ,  H04B1/04 ,  H04B2001/0408

Abstract: In simultaneous communication using multiple frequency bands, the degradation in the communication quality is suppressed. The radio-frequency front-end circuit (1) includes an antenna terminal (2), a transmit filter (3), a receive filter, a transport filter, a switch (6), and a phase adjusting circuit (7). The switch (6) is capable of connecting the antenna terminal (2) to the transmit filter (3) or the receive filter and the transport filter simultaneously. The transmit filter (3) is disposed on a transmission path (T1). The receive filter is disposed on a reception path. The transport filter is disposed on a transport path. The phase adjusting circuit (7) is disposed on at least one of paths, the transmission path (T1), the reception path, and a reception/transmission path.

公开(公告)号：US11483023B2

公开(公告)日：2022-10-25

申请号：US17327771

申请日：2021-05-24

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hiroyuki Kani

IPC: H04B1/40 ,  H04B1/04 ,  H04B1/10

Abstract: A radio-frequency module includes a module substrate. The module substrate includes a first principal surface; a second principal surface on a side of the module substrate that is opposite to the first principal surface; a third principal surface that is recessed toward the first principal surface from the second principal surface in a plan view of the second principal surface; a recessed region in which the third principal surface is a bottom surface; and a protruding region located on an outer periphery of the recessed region, in a plan view of the second principal surface, wherein the protruding region has a via conductor disposed therein, the via conductor extending in a direction perpendicular to the second principal surface and having an end exposed on the second principal surface.