公开(公告)号：US11677427B2

公开(公告)日：2023-06-13

申请号：US17380400

申请日：2021-07-20

申请人： Murata Manufacturing Co., Ltd.

发明人： Hiroyuki Kani ,  Tomohiro Sano

IPC分类号： H04B1/04 ,  H04B1/00 ,  H04B1/16

CPC分类号： H04B1/1615 ,  H04B1/006 ,  H04B1/04 ,  H04B2001/0408

摘要： 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：US12074624B2

公开(公告)日：2024-08-27

申请号：US18311426

申请日：2023-05-03

申请人： Murata Manufacturing Co., Ltd.

发明人： Hiroyuki Kani ,  Tomohiro Sano

IPC分类号： H04B1/04 ,  H04B1/00 ,  H04B1/16

CPC分类号： H04B1/1615 ,  H04B1/006 ,  H04B1/04 ,  H04B2001/0408

摘要： 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：US11469712B2

公开(公告)日：2022-10-11

申请号：US16897481

申请日：2020-06-10

申请人： MURATA MANUFACTURING CO., LTD.

发明人： Tomohiro Sano ,  Hirotsugu Mori

IPC分类号： H03F1/14 ,  H03F1/02 ,  H03F3/21 ,  H04B1/00 ,  H04B1/04

摘要： A radio frequency circuit includes a power amplifier configured to selectively amplify one of a first radio frequency signal and a second radio frequency signal that have different bandwidths, and when the first radio frequency signal is input to the power amplifier, a first bias signal is applied to the power amplifier, and when the second radio frequency signal is input to the power amplifier, a second bias signal different from the first bias signal is applied to the power amplifier.

公开(公告)号：US11909360B2

公开(公告)日：2024-02-20

申请号：US17820652

申请日：2022-08-18

申请人： MURATA MANUFACTURING CO., LTD.

发明人： Tomohiro Sano ,  Hirotsugu Mori

IPC分类号： H03F3/68 ,  H03F3/04 ,  H03F1/02 ,  H03F3/21 ,  H04B1/00 ,  H04B1/04

CPC分类号： H03F1/0211 ,  H03F3/21 ,  H04B1/006 ,  H04B1/04 ,  H03F1/0277 ,  H03F2200/111 ,  H03F2200/171 ,  H03F2200/451

摘要： A radio frequency circuit includes a power amplifier configured to selectively amplify one of a first radio frequency signal and a second radio frequency signal that have different bandwidths, and when the first radio frequency signal is input to the power amplifier, a first bias signal is applied to the power amplifier, and when the second radio frequency signal is input to the power amplifier, a second bias signal different from the first bias signal is applied to the power amplifier.