公开(公告)号：US20040192232A1

公开(公告)日：2004-09-30

申请号：US10403769

申请日：2003-03-31

Applicant: MOTOROLA, INC.

Inventor： Robert Szopko ,  Justin N. Annes ,  Gregory T. Nash

IPC: H04B001/02 ,  H04B001/04

CPC classification number: H04B1/0475 ,  H03F1/34 ,  H03F3/24 ,  H04B2001/0433

Abstract: An interference canceller 200 and corresponding method thereof operates to reduce the level of an interfering signal and includes a circulator 202 comprising a transmitter port, a receiver port and an antenna port, a transmission line 210 comprising a first end coupled to the transmitter port and a second end for coupling to a signal source; and a circuit 216, having an input coupled to the receiver port 206 and an output coupled 220 to the transmission line, for providing a phase shifted version of a signal coupled to the input at the output, wherein an interfering signal at the antenna port is reverse coupled to the transmission line by the circulator and coupled to the input of the circuit so as to reduce an amplitude of the interfering signal at the second end 212 of the transmission line. The interference canceller concepts may advantageously be used in a single transmitter version or in a multiple transmitter version (FIG. 4).

Abstract translation: 干扰消除器200及其相应方法操作以降低干扰信号的电平，并且包括包括发射器端口，接收器端口和天线端口的环行器202，传输线210，其包括耦合到发射器端口的第一端和 耦合到信号源的第二端; 以及电路216，其具有耦合到接收器端口206的输入和耦合到传输线的输出220，用于提供耦合到输出处的输入的信号的相移版本，其中天线端口处的干扰信号是 由循环器反向耦合到传输线并耦合到电路的输入，以便减小传输线第二端212处的干扰信号的幅度。 干扰消除器概念可有利地用于单个发射机版本或多发射机版本中（图4）。