公开(公告)号：US06366765B1

公开(公告)日：2002-04-02

申请号：US09276712

申请日：1999-03-26

申请人： Naoki Hongo ,  Tetsuhiko Miyatani ,  Kenzo Urabe ,  Zhou Changming

发明人： Naoki Hongo ,  Tetsuhiko Miyatani ,  Kenzo Urabe ,  Zhou Changming

IPC分类号： H04B118

CPC分类号： H03G3/3078 ,  H03G3/3068 ,  H03J3/08 ,  H04B1/30

摘要： The present invention intends to provide a receiver which receives a signal by switching a plurality of communication systems, wherein a circuit scale is reduced to intend to the miniaturization of a device. The receiver converts a received signal to a base band signal by a local oscillation frequency based on the selected communication system by a mixer, limits a band by an LPF through which signals of all communication systems can pass, performs a band limitation based on the communication system by weighting with a tap coefficient based on the selected communication system to synthesis by a transversal filter, and demodulates a signal by a demodulation system based on the selected communication system by a demodulating unit.

摘要翻译： 本发明旨在提供一种通过切换多个通信系统来接收信号的接收机，其中减小了电路规模以意图使设备的小型化。 接收机通过混频器基于所选择的通信系统将接收到的信号转换为基带信号，通过本地振荡频率，通过所有通信系统的信号可以通过的LPF限制频带，基于通信来执行频带限制 系统，通过基于所选择的通信系统的抽头系数进行加权以通过横向滤波器进行合成，并且由解调单元基于所选择的通信系统由解调系统解调信号。