-
公开(公告)号：US11258422B2
公开(公告)日：2022-02-22
申请号：US16724956
申请日：2019-12-23
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Jin Yokoyama
Abstract: A communication module includes an input/output switch, a duplexer, a transmit filter, and a receive filter. In the duplexer, a second side is disposed at a position farther from the input/output switch than a first side in a second direction orthogonal to a first direction. Any one of the transmit filter and the receive filter is disposed adjacent to the input/output switch in the first direction.
-
公开(公告)号：US09887727B1
公开(公告)日：2018-02-06
申请号：US15668086
申请日：2017-08-03
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Jin Yokoyama , Shiro Masumoto
CPC classification number: H04B1/44 , H03F2200/294 , H03G3/3026 , H03G3/3036 , H04B1/0057 , H04B1/0458 , H04B1/52 , H04B2001/0416 , H04B2001/485
Abstract: A transmit-and-receive module includes a duplexer, a power amplifier, and a low-noise amplifier. The duplexer includes a transmit filter and a receive filter. The power amplifier and the low-noise amplifier are integrated with each other. In a Smith chart, impedance in a receive band of the receive filter seen from a receive terminal intersects a line connecting a center point of noise figure circles and a center point of gain circles. The center point of the noise figure circles represents the impedance at which the noise figure of the low-noise amplifier is minimized. The center point of the gain circles represents the impedance at which the gain of the low-noise amplifier is maximized.
-
公开(公告)号：US11984924B2
公开(公告)日：2024-05-14
申请号：US16711898
申请日：2019-12-12
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Seima Kondo , Satoshi Tanaka , Satoshi Arayashiki , Hiroyuki Furusato , Jin Yokoyama , Toru Yamaji , Akio Kaneda , Kiwamu Sakano , Junichi Yoshioka , Tatsuya Tsujiguchi , Atushi Ono
CPC classification number: H04B1/48 , H03F3/21 , H05K1/0243 , H03F2200/294 , H03F2200/451 , H05K2201/10098
Abstract: A transmit/receive module includes plural duplexers, a power amplifier, and a sending transmission line. The plural duplexers operate in bands different from each other and each includes a transmit filter and a receive filter. The power amplifier amplifies signals of pass bands of the plural transmit filters and outputs the amplified signals. The sending transmission line is connected to the plural transmit filters. The signals of the pass bands of the plural transmit filters output from the power amplifier are transmitted through the sending transmission line.
-
公开(公告)号：US11444594B2
公开(公告)日：2022-09-13
申请号：US17108042
申请日：2020-12-01
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Jin Yokoyama
Abstract: A multiplexer includes an antenna terminal, first to third filters with different passbands, and first and second phase circuits that adjust the phase of a passing signal. The first filter is connected to the antenna terminal. The second filter is connected to the antenna terminal with the first phase circuit provided between the second filter and the antenna terminal. The third filter is connected to a connection node between the first phase circuit and the second filter with the second phase circuit provided between the third filter and the connection node. In the second filter, an unwanted wave is generated in the first passband of the first filter. The first phase circuit adjusts the phase to provide an impedance in an open state in the first passband at the antenna terminal. The second phase circuit adjusts the phase to provide the impedance in a short-circuited state in the first passband at the connection node.
-
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
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.
-
Patent Agency Ranking
公开(公告)号：US10771102B2
公开(公告)日：2020-09-08
申请号：US16055649
申请日：2018-08-06
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Jin Yokoyama , Shiro Masumoto , Syunji Yoshimi
Abstract: A transmit-and-receive module includes a multiplexer, a power amplifier, and a low-noise amplifier. The multiplexer includes a transmit filter and a receive filter. The power amplifier and the low-noise amplifier are integrated with each other. In a Smith chart, impedance in a receive band of the receive filter seen from a receive terminal intersects a line connecting a center point of noise figure circles and a center point of gain circles. The center point of the noise figure circles represents the impedance at which the noise figure of the low-noise amplifier is minimized. The center point of the gain circles represents the impedance at which the gain of the low-noise amplifier is maximized.
-
公开(公告)号：US20180109283A1
公开(公告)日：2018-04-19
申请号：US15845240
申请日：2017-12-18
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Jin Yokoyama , Shiro Masumoto
CPC classification number: H04B1/44 , H03F2200/294 , H03G3/3026 , H03G3/3036 , H04B1/0057 , H04B1/0458 , H04B1/52 , H04B2001/0416 , H04B2001/485
Abstract: A transmit-and-receive module includes a duplexer, a power amplifier, and a low-noise amplifier. The duplexer includes a transmit filter and a receive filter. The power amplifier and the low-noise amplifier are integrated with each other. In a Smith chart, impedance in a receive band of the receive filter seen from a receive terminal intersects a line connecting a center point of noise figure circles and a center point of gain circles. The center point of the noise figure circles represents the impedance at which the noise figure of the low-noise amplifier is minimized. The center point of the gain circles represents the impedance at which the gain of the low-noise amplifier is maximized.
-
公开(公告)号：US20180041242A1
公开(公告)日：2018-02-08
申请号：US15668086
申请日：2017-08-03
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Jin Yokoyama , Shiro Masumoto
CPC classification number: H04B1/44 , H03F2200/294 , H03G3/3026 , H03G3/3036 , H04B1/0057 , H04B1/0458 , H04B1/52 , H04B2001/0416 , H04B2001/485
Abstract: A transmit-and-receive module includes a duplexer, a power amplifier, and a low-noise amplifier. The duplexer includes a transmit filter and a receive filter. The power amplifier and the low-noise amplifier are integrated with each other. In a Smith chart, impedance in a receive band of the receive filter seen from a receive terminal intersects a line connecting a center point of noise figure circles and a center point of gain circles. The center point of the noise figure circles represents the impedance at which the noise figure of the low-noise amplifier is minimized. The center point of the gain circles represents the impedance at which the gain of the low-noise amplifier is maximized.
-
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
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：US20190036553A1
公开(公告)日：2019-01-31
申请号：US16047186
申请日：2018-07-27
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Yushi Sugimoto , Jin Yokoyama , Tomohide Aramata
CPC classification number: H04B1/006 , H03H7/09 , H03H9/0004 , H03H9/542 , H03H9/568 , H03H9/605 , H03H9/6436 , H03H9/6483 , H03H9/70 , H03H9/706 , H03H9/725 , H03H2001/0085 , H04B1/0057 , H04B1/48 , H04L5/1461
Abstract: A duplexer includes first and second filter circuits and first and second wirings. The first filter circuit allows a signal of a first frequency band to pass therethrough between a first terminal and a common terminal and includes a first resonator which is connected at one end to a line disposed between the first terminal and the common terminal to branch off from the line. The second filter circuit allows a signal of a second frequency band, which is different from the first frequency band, to pass therethrough between a second terminal and the common terminal. The first wiring is connected at one end to the common terminal and is opened at the other end. The second wiring is connected at one end to the other end of the first resonator and is grounded at the other end. The first wiring is electromagnetically coupled with second wiring.
-
-
-
-
-
-
-
-
-
Search Results
16
records
(took 0.015 seconds)
