公开(公告)号：US20230246388A1

公开(公告)日：2023-08-03

申请号：US18146260

申请日：2022-12-23

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hideki TSUKAMOTO ,  Yuma AMEMORI ,  Yuuto MORITA

IPC: H01R13/6471 ,  H01R12/71 ,  H01R13/631 ,  H01R13/516

CPC classification number: H01R13/6471 ,  H01R12/716 ,  H01R13/6315 ,  H01R13/516

Abstract: A connector includes a resin member which includes a protruding portion extending in a right and left direction when viewed in an up and down direction, a frame portion having an annular shape surrounding the protruding portion when viewed in the up and down direction, and a coupling portion between the protruding portion and the frame portion when viewed in the up and down direction and coupling the protruding portion to the frame portion. A plurality of signal terminals is supported by the frame portion and arranged in the right and left direction in a region in front of or in back of the protruding portion. The floating terminal covers at least part of a left end of the protruding portion when viewed in the up and down direction and is not connected to any of terminals of a connector, including the signal terminals and a ground terminal.

公开(公告)号：US20200382149A1

公开(公告)日：2020-12-03

申请号：US16999534

申请日：2020-08-21

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hiroyuki NAGAMORI ,  Akio KANEDA ,  Hiroshi MURANAKA ,  Hideki TSUKAMOTO ,  Daisuke ITO ,  Kiwamu SAKANO ,  Daisuke MIYAZAKI

IPC: H04B1/18 ,  H04B1/52 ,  H03F3/193 ,  H03F3/24 ,  H04B7/04

Abstract: A frontend circuit includes a wide-band filter, a transmit filter, and switches. The wide-band filter passes both the receive frequency band of a first communication frequency band and that of a second communication frequency band which is close to or overlaps that of the first communication frequency band. The transmit filter passes the transmit frequency band of the first or second communication frequency band. The switches are capable of simultaneously bringing, into conduction, at least two of multiple filters including the wide-band filter and the transmit filter. In carrier aggregation using the receive frequency bands of the first and second communication frequency bands, the switches simultaneously bring the wide-band filter and the transmit filter into conduction. Thus, in carrier aggregation using signals of multiple communication frequencies simultaneously in communication, attenuation of signals due to signal leakage in two receive frequency bands, which are close to each other, is suppressed.

公开(公告)号：US20200252042A1

公开(公告)日：2020-08-06

申请号：US16855006

申请日：2020-04-22

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hirotsugu MORI ,  Hideki TSUKAMOTO ,  Taizo HISANO

IPC: H03H7/46 ,  H03H1/00 ,  H03H7/075 ,  H03H7/01 ,  H03H9/70 ,  H03F3/19 ,  H04J1/02

Abstract: A radio frequency circuit includes a multilayer substrate, series arm circuits in a first path connecting the input/output terminals (T1 and T2) on the multilayer substrate, a parallel arm circuit in a second path connecting a node on the first path and a ground, a wiring A on the multilayer substrate connected to the input/output terminal (T1) as a part of the first path, a wiring B on the multilayer substrate connected to the input/output terminal (T2) as a part of the first path, and a wiring C on the multilayer substrate as a part of the second path. The parallel arm circuit includes an impedance variable circuit, the wiring A and the wiring B in a layer different from the multilayer substrate. When viewed in a plan view, the wiring C does not overlap with the wiring A and the wiring B.