公开(公告)号：US20200220270A1

公开(公告)日：2020-07-09

申请号：US16818339

申请日：2020-03-13

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kengo ONAKA ,  Yoshiki YAMADA ,  Keiichi HIROSE ,  Hirotsugu MORI

IPC: H01Q9/04 ,  H01Q1/22 ,  H01Q1/42

Abstract: An antenna module includes a multilayer substrate having a first main surface and a second main surface opposing to each other, a patch antenna formed on a side of the first main surface of the multilayer substrate and configured with a radiation electrode and a ground electrode, an RFIC formed on a side of the second main surface of the multilayer substrate, a first filter, and a second filter different from the first filter, wherein the patch antenna has a first feed point and a second feed point provided at different positions in the radiation electrode, the first feed point is electrically connected to the RFIC via the first filter, the second feed point is electrically connected to the RFIC via the second filter, and the first filter and the second filter are formed in the multilayer substrate.

公开(公告)号：US20180205358A1

公开(公告)日：2018-07-19

申请号：US15923028

申请日：2018-03-16

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kengo ONAKA ,  Katsuhito KURODA ,  Yoshiki YAMADA

IPC: H03H7/20 ,  H04B1/12

CPC classification number: H03H7/20 ,  H01P1/18 ,  H03H7/38 ,  H04B1/006 ,  H04B1/12

Abstract: A variable phase shift circuit has a phase shifter including a first port and a second port; a through path including a first port and a second port; a first switch including a first common port and configured to select the first port of the phase shifter or the first port of the through path and to connect the first port or the first port to the first common port; and a second switch including a second common port and configured to select the second port of the phase shifter or the second port of the through path and to connect the second port or the second port to the second common port. Phase shift amounts between the first common port and the second common port are switched in accordance with selections made by the first switch and the second switch.

公开(公告)号：US20160344100A1

公开(公告)日：2016-11-24

申请号：US15160294

申请日：2016-05-20

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kengo ONAKA ,  Hiroya TANAKA ,  Hidenori OBIYA ,  Yuki NAKAIKE ,  Reiji NAKAJIMA

IPC: H01Q5/335 ,  H01Q1/24

CPC classification number: H01Q5/335 ,  H01Q1/243 ,  H04B1/525

Abstract: A front end circuit and a wireless communication device capable of achieving matching with an antenna across a wide frequency band and capable of suppressing degradation in high-frequency characteristics caused by the influence of transmission signal harmonics is provided. A front end circuit includes a variable matching circuit connected to a low-frequency band transmission port side of a diplexer and a harmonic filter connected between the variable matching circuit and the diplexer. The harmonic filter has a pass band that overlaps with a low-frequency band-side communication band and a stop band that overlaps with a harmonic frequency of the low-frequency band-side communication band.

Abstract translation: 提供了能够实现与宽频带的天线匹配并且能够抑制由发送信号谐波的影响引起的高频特性的劣化的前端电路和无线通信装置。 前端电路包括连接到双工器的低频带传输端口侧的可变匹配电路和连接在可变匹配电路和双工器之间的谐波滤波器。 谐波滤波器具有与低频带侧通信频带和与低频带侧通信频带的谐波频率重叠的阻带重叠的通带。

公开(公告)号：US20160043468A1

公开(公告)日：2016-02-11

申请号：US14887411

申请日：2015-10-20

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kengo ONAKA

IPC: H01Q5/328 ,  H03H7/40

CPC classification number: H01Q5/328 ,  H01Q1/243 ,  H01Q5/335 ,  H01Q5/371 ,  H03H7/40

Abstract: A variable resonant circuit is inserted between a feeding point of a radiating element and a ground conductor. When the variable resonant circuit is not inserted, an input impedance of the radiating element is lower than about 50Ω and capacitive in a first low frequency band, lower than about 50Ω and inductive in a second low frequency band, and close to about 50Ω in a high frequency band. When the variable resonant circuit exhibits a first resonance characteristic, the variable resonant circuit is inductive in the first low frequency band, and its impedance in the high frequency band is higher than that in the first low frequency band. When the variable resonant circuit exhibits a second resonance characteristic, the variable resonant circuit is capacitive in the second low frequency band, and its impedance in the high frequency band is higher than that in the second low frequency band.

Abstract translation: 可变谐振电路插入在辐射元件的馈电点和接地导体之间。 当不插入可变谐振电路时，辐射元件的输入阻抗低于约50Ω; 并且在第一低频带中容性低于约50Ω; 并且在第二低频带中感应，并且接近约50＆OHgr; 在高频带。 当可变谐振电路具有第一谐振特性时，可变谐振电路在第一低频带中是感性的，并且其在高频带中的阻抗高于第一低频带中的阻抗。 当可变谐振电路具有第二谐振特性时，可变谐振电路在第二低频带中是电容性的，并且其在高频带中的阻抗高于第二低频带中的阻抗。

公开(公告)号：US20130162488A1

公开(公告)日：2013-06-27

申请号：US13775006

申请日：2013-02-22

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Kengo ONAKA ,  Osamu SHIBATA ,  Yuichi KUSHIHI

IPC: H01Q21/30

CPC classification number: H01Q1/38 ,  H01Q7/00 ,  H01Q9/42 ,  H01Q21/30

Abstract: An antenna unit and a radio communication device are provided. An antenna unit has a monopole antenna section and a loop antenna section. The monopole antenna section includes a linear radiating electrode that resonates at a first frequency and has an electrical length of one-quarter of the wave length corresponding to the first frequency. The loop antenna section includes a radiating electrode that resonates at a second frequency, is vertically erected on a non-ground region, and connected to a feed line. A proximal end of the radiating electrode of the loop antenna section is connected to an intermediate portion of the feed line, and a distal end thereof is connected to a ground region. The electrical length of the radiating electrode of the loop antenna section is one-half of the wave length of the second frequency.

Abstract translation: 提供天线单元和无线电通信设备。 天线单元具有单极天线部分和环形天线部分。 单极天线部分包括以第一频率谐振并具有与第一频率对应的波长的四分之一的电长度的线性辐射电极。 环形天线部分包括以第二频率谐振的放射电极，垂直竖立在非接地区域上并连接到馈电线。 环形天线部分的辐射电极的近端连接到馈电线的中间部分，其远端连接到接地区域。 环形天线部分的辐射电极的电长度是第二频率的波长的一半。