公开(公告)号：US20160352494A1

公开(公告)日：2016-12-01

申请号：US15235295

申请日：2016-08-12

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Takanori UEJIMA ,  Hiromichi KITAJIMA ,  Saneaki ARIUMI ,  Hisao HAYAFUJI ,  Tatsuya TSUJIGUCHI

IPC: H04L5/12 ,  H04L5/10 ,  H04B1/04

CPC classification number: H04L5/12 ,  H04B1/0458 ,  H04B1/18 ,  H04B1/52 ,  H04L5/10

Abstract: A radio frequency front-end circuit includes a duplexer, a phase adjustment circuit, and a low noise amplifier. The phase adjustment circuit is connected between an Rx filter of the duplexer and the low noise amplifier. The phase adjustment circuit executes phase adjustment such that a quadrant in which an impedance ZLNA(fn) at a particular frequency different from a fundamental frequency of a reception signal when looking at the low noise amplifier side from the Rx filter is present and a quadrant in which an impedance ZRX(fn) at the particular frequency when looking at the Rx filter side from the low noise amplifier is present are not in a conjugate relation in terms of phase.

Abstract translation: 射频前端电路包括双工器，相位调整电路和低噪声放大器。 相位调整电路连接在双工器的Rx滤波器和低噪声放大器之间。 相位调整电路执行相位调整，使得在存在从Rx滤波器观看低噪声放大器侧时，与接收信号的基频不同的特定频率处的阻抗ZLNA（fn）存在的象限， 当从低噪声放大器观看Rx滤波器侧时，在特定频率处的阻抗ZRX（fn）在相位方面不是共轭关系。

公开(公告)号：US20150080050A1

公开(公告)日：2015-03-19

申请号：US14551284

申请日：2014-11-24

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hiromichi KITAJIMA

IPC: H05K1/02 ,  H05K1/16 ,  H05K1/18

CPC classification number: H05K1/0298 ,  H01L23/49822 ,  H01L23/49838 ,  H01L23/50 ,  H01L23/552 ,  H01L23/642 ,  H01L2224/16 ,  H01L2924/19105 ,  H04W88/06 ,  H05K1/0225 ,  H05K1/0253 ,  H05K1/165 ,  H05K1/181 ,  H05K2201/09336 ,  H05K2201/10053

Abstract: A composite module includes outer ground electrodes on one main surface of a wiring substrate, a wiring electrode inside the wiring substrate, and a first ground electrode between the wiring electrode and the outer ground electrode. A cutout is provided in the first ground electrode at least at a portion of a region overlapping with the wiring electrode and the outer ground electrode when viewed from above, and the wiring electrode overlaps with at least one of the first ground electrode and the outer ground electrode when viewed from above to reduce stray capacitance produced on the wiring electrode and to adjust impedance of the wiring electrode while preventing signals leaked from the exterior from interfering with the wiring electrode.

Abstract translation: 复合模块包括在布线基板的一个主表面上的外部接地电极，布线基板内部的布线电极以及布线电极和外部接地电极之间的第一接地电极。 当从上方观察时，至少在与布线电极和外部接地电极重叠的区域的部分处，在第一接地电极中设置有切口，并且布线电极与第一接地电极和外部接地中的至少一个重叠 电极，以减少在布线电极上产生的杂散电容，并且调节布线电极的阻抗，同时防止从外部泄露的信号与布线电极干扰。

公开(公告)号：US20140218127A1

公开(公告)日：2014-08-07

申请号：US14169552

申请日：2014-01-31

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Yuji NURIKABE ,  Hiromichi KITAJIMA

IPC: H03H9/72

CPC classification number: H03H9/725 ,  H03H7/38 ,  H03H9/02574 ,  H03H9/706 ,  H03H9/72

Abstract: A high-frequency module includes a multilayer substrate, a switch IC, a SAW duplexer and a matching circuit. The matching circuit includes a wiring line and first and second inner layer ground electrodes. The matching circuit performs impedance matching between the switch IC and the SAW duplexer in a pass band of the SAW duplexer. The wiring line is an inner layer electrode of the multilayer substrate that is connected between the switch IC and the SAW duplexer. The first and second inner layer ground electrodes face the wiring line in a stacking direction with only dielectric layers of the multilayer substrate therebetween.

Abstract translation: 高频模块包括多层基板，开关IC，SAW双工器和匹配电路。 匹配电路包括布线和第一和第二内层接地电极。 匹配电路在SAW双工器的通带中执行开关IC和SAW双工器之间的阻抗匹配。 布线是连接在开关IC和SAW双工器之间的多层基板的内层电极。 第一和第二内层接地电极在层叠方向上面对着布线，只有其间的多层基板的电介质层。

公开(公告)号：US20140179364A1

公开(公告)日：2014-06-26

申请号：US14100103

申请日：2013-12-09

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hiromichi KITAJIMA

IPC: H04B1/40 ,  H03H7/01 ,  H01P3/08

CPC classification number: H04B1/40 ,  H01P3/08 ,  H03H7/0138 ,  H03H9/0566 ,  H04B1/525

Abstract: In a circuit module, even if a transmission signal output from a transmission electrode of a mounting substrate to a transmission terminal of a splitter leaks into a ground electrode, the transmission signal that has leaked into the ground electrode is mainly transmitted along an edge of the ground electrode and the transmission signal that has leaked into the ground electrode flows into a plurality of via conductors arranged with end surfaces superposed with the edge of the ground electrode when viewed in plan. Therefore, a transmission signal that has been output from the transmission electrode and leaked into the ground electrode is prevented from traveling along the edge of the ground electrode toward the reception electrode side. As a result, isolation characteristics of the transmission electrode and the reception electrode from each other are improved.

Abstract translation: 在电路模块中，即使从安装基板的发送电极向分配器的发送端子输出的发送信号泄漏到接地电极中，已经泄漏到接地电极的发送信号主要沿着 接地电极和泄漏到接地电极中的透射信号流入多个通孔导体，当在平面图中观察时，端子表面与接地电极的边缘重叠。 因此，防止从发送电极输出并漏入接地电极的发送信号沿着接地电极的边缘朝向接收电极侧行进。 结果，透射电极和接收电极的隔离特性提高。