公开(公告)号：US4864259A

公开(公告)日：1989-09-05

申请号：US274869

申请日：1988-11-23

申请人： Kenji Takamoro ,  Kenji Mizoe ,  Tatsuo Ogawa ,  Yasuhiko Nakagawa

发明人： Kenji Takamoro ,  Kenji Mizoe ,  Tatsuo Ogawa ,  Yasuhiko Nakagawa

IPC分类号： H03H9/10 ,  H03H9/58 ,  H03H9/60 ,  H05K1/18 ,  H05K3/34

CPC分类号： H03H9/1028 ,  H03H9/605 ,  H05K1/181 ,  H05K3/341

摘要： A ladder-type electric filter circuit apparatus having a plurality of thinner electric filter units wherein each electric filter unit includes a casing of metal into which piezoelectric resonator elements and terminal plates are inserted, and the metal casing is securely mounted on a printed circuit board by soldering. The piezoelectric resonator elements and terminal plates are insulated from the metal casing by an insulating plate and an elastic insulatiang plate which is also served as a vibration or shock absorber for protecting the contained filter from any external vibration or shock propagated through the printed circuit board.

摘要翻译： 一种梯形电滤波器电路装置，具有多个较薄的滤波器单元，其中每个滤波器单元包括插入有压电谐振元件和端子板的金属壳体，并且金属外壳通过以下方式牢固地安装在印刷电路板上： 焊接。 压电谐振元件和端子板通过绝缘板和弹性绝缘板与金属外壳绝缘，弹性绝缘板也用作振动或减震器，用于保护所包含的过滤器免受通过印刷电路板传播的任何外部振动或冲击。

公开(公告)号：US4435840A

公开(公告)日：1984-03-06

申请号：US388367

申请日：1982-06-14

申请人： Junichiroh Kojima ,  Kenji Mizoe

发明人： Junichiroh Kojima ,  Kenji Mizoe

IPC分类号： H04W16/06 ,  H04B1/00

CPC分类号： H04W16/06

摘要： In a mobile radio communication system, a control station supplies a traffic adjusting signal to a particular one of base stations, channels allotted to which are used up to a predetermined number in communication therethrough between the control station and mobile stations in the service area thereof provided that some of the channels allotted to an adjacent base station are idle. The signal narrows the service area of the particular base station as by reducing the base station output power. Alternatively, the signal varies a communicable distance of each mobile station in the service area of the particular base station. For example, the signal makes the particular base station raise the mobile station output power to make some of the mobile stations carry out the communication through the adjacent base station. As a further alternative, the signal varies both the service area and the communicable distance. For example, the signal makes the particular base station raise the reference level used in communication therethrough. Instead, a lower reference level is developed in each mobile station for use in communication through the adjacent base station.

摘要翻译： 在移动无线电通信系统中，控制站向基站中的特定一个提供业务调整信号，分配给它们的信道在其提供的服务区域中的控制站和移动站之间通过其中通信的预定数量 分配给相邻基站的一些信道是空闲的。 信号通过降低基站输出功率来缩小特定基站的服务区域。 或者，信号改变特定基站的服务区中每个移动台的可通信距离。 例如，信号使特定的基站提高移动台的输出功率，使一些移动站通过相邻的基站进行通信。 作为另一替代方案，信号改变了服务区域和可通信距离。 例如，信号使特定的基站提高通信中使用的基准电平。 相反，在每个移动站中开发较低的参考水平，以用于通过相邻基站的通信。