专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20120274418A1 BRANCHING FILTER 有权
标题翻译：分支过滤器
公开(公告)号：US20120274418A1
公开(公告)日：2012-11-01
申请号：US13547082
申请日：2012-07-12
申请人： Toshiaki TAKATA , Shigeyuki FUJITA
发明人： Toshiaki TAKATA , Shigeyuki FUJITA
IPC分类号： H03H9/70 , H03H9/56
CPC分类号： H03H9/0085 , H03H9/02913 , H03H9/0576 , H03H9/725
摘要： A branching filter includes a ladder-type elastic wave filter unit connected between an antenna terminal and a transmission signal terminal and a longitudinally coupled resonator-type elastic wave filter unit connected between an antenna terminal and first and second balanced reception signal terminals while maintaining the isolation characteristics between the transmission signal terminal and the first and second reception signal terminals. In a duplexer, a transmission signal propagation direction is perpendicular or substantially perpendicular to each of a first reception signal propagation direction and a second reception signal propagation direction.
摘要翻译：分路滤波器包括连接在天线端子和发送信号端子之间的梯形弹性波滤波器单元和连接在天线端子与第一和第二平衡接收信号端子之间的纵向耦合的谐振器型弹性波滤波器单元，同时保持隔离发送信号端子与第一和第二接收信号端子之间的特性。在双工器中，发送信号传播方向与第一接收信号传播方向和第二接收信号传播方向垂直或基本垂直。

2. 发明申请

US20110181372A1 ELASTIC-WAVE FILTER DEVICE 有权
标题翻译：弹性波滤波器
公开(公告)号：US20110181372A1
公开(公告)日：2011-07-28
申请号：US13079882
申请日：2011-04-05
申请人： Shigeyuki FUJITA
发明人： Shigeyuki FUJITA
IPC分类号： H03H9/25
CPC分类号： H03H9/0571 , H03H9/0085 , H03H9/0576
摘要： An elastic-wave filter device includes a package substrate and filter mounting pattern provided on a first main surface of the package substrate on which a longitudinally coupled resonator-type elastic-wave filter is mounted, a back-side terminal pattern is provided on a second main surface thereof, and an internal electrode pattern is provided inside the package substrate. When seen in plan view from a direction perpendicular or substantially perpendicular to the first main surface of the substrate body, first via conductors electrically connecting a ground pattern element of the filter mounting pattern connected to a ground pad of the longitudinally coupled resonator-type elastic-wave filter and an internal ground pattern element of the internal electrode pattern are arranged asymmetrically with respect to a center line X-X passing through an input pattern element of the filter mounting pattern and through two output pattern elements
摘要翻译：弹性波滤波器装置包括：封装基板和滤波器安装图案，设置在其上安装有纵向耦合的谐振器型弹性波滤波器的封装基板的第一主表面上，第二侧设置有背面端子图案主表面，内部电极图案设置在封装基板的内部。当从垂直于或基本垂直于基板主体的第一主表面的方向的平面图中观察时，第一通孔导体将连接到纵向耦合的谐振器型弹性连接器的接地焊盘的滤波器安装图案的接地图形元件电连接，内部电极图案的内部接地图形元件相对于穿过滤色器安装图案的输入图案元件的中心线XX不对称地布置，并且通过两个输出图案元件

3. 发明申请

US20110316648A1 ELASTIC-WAVE LADDER FILTER 有权
标题翻译：弹性波浪式过滤器
公开(公告)号：US20110316648A1
公开(公告)日：2011-12-29
申请号：US13226638
申请日：2011-09-07
申请人： Shigeyuki FUJITA
发明人： Shigeyuki FUJITA
IPC分类号： H03H9/64 , H03H9/72
CPC分类号： H03H9/0222 , H03H9/1452 , H03H9/6483 , H03H9/725
摘要： An elastic-wave ladder filter significantly reduces loss within a passband while also increasing the passband and attenuation. The elastic-wave ladder filter includes a series arm that connects an input end and an output end and a parallel arm that connects the series arm and a ground potential. The series arm includes at least three series arm resonators connected to each other in series. The resonant frequencies of the at least three series arm resonators differ from each other. An aspect ratio of the series arm resonator having the lowest resonant frequency is larger than an average of the aspect ratios of all the series arm resonators when the aspect ratio is defined as a ratio of an overlap width of electrode fingers of a series arm resonator to a number of pairs of the electrode fingers.
摘要翻译：弹性波形梯形滤波器显着降低了通带内的损耗，同时也增加了通带和衰减。弹性波形梯形滤波器包括连接输入端和输出端的串联臂和连接串联臂和接地电位的并联臂。串联臂包括串联连接的至少三个串联臂谐振器。至少三个串联臂谐振器的谐振频率彼此不同。具有最低谐振频率的串联臂谐振器的纵横比大于所有串联臂谐振器的纵横比的平均值，当宽高比被定义为串联臂谐振器的电极指的重叠宽度与一对电极指。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式