CN100372243C - 双向通信系统 - Google Patents

双向通信系统 Download PDF

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Publication number
CN100372243C
CN100372243C CNB038002736A CN03800273A CN100372243C CN 100372243 C CN100372243 C CN 100372243C CN B038002736 A CNB038002736 A CN B038002736A CN 03800273 A CN03800273 A CN 03800273A CN 100372243 C CN100372243 C CN 100372243C
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terminals
output stage
receiver
transmission medium
outlet
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CN1515084A (zh
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阿兰·奥尔松
托尔比约恩·兰达尔
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Infineon Technologies AG
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/54—Circuits using the same frequency for two directions of communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/50—Circuits using different frequencies for the two directions of communication
    • H04B1/52—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
    • H04B1/525—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa with means for reducing leakage of transmitter signal into the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/54—Circuits using the same frequency for two directions of communication
    • H04B1/58—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Dc Digital Transmission (AREA)
  • Bidirectional Digital Transmission (AREA)

Abstract

一种包括发射机和接收机的双向通信系统，利用传输介质进行双向通信，所述发射机包括：放大器，具有用于要发射的信号的输入接线端；输出级，具有通过相应的电阻器与传输介质相连的两个输出接线端；以及负反馈电路，其输入接线端与输出级的两个输出接线端相连，而其输出接线端与放大器的输入接线端相连，所述接收机以两个第一输入接线端分别通过所述相应的电阻器与输出级的两个输出接线端相连，其特征在于电流反射镜以其输入接线端与放大器输出级的另一输出接线端相连，而其两个输出接线端通过对应的电阻器跨接在负载两端，所述负载跨接在所述接收机的两个第二输入接线端上，所述接收机适合于通过从所述两个第一输入接线端之间的电压中减去所述两个第二输入接线端之间的电压，而提取出从传输介质接收到的信号。

Description

双向通信系统
技术领域
本发明大体上涉及利用传输介质进行双向通信的、包括发射机和接收机的双向通信系统，更具体地涉及一种在这种双向通信系统中用于提取出接收到的信号的结构。
背景技术
在图1中示出了用于这种通信的一种已知的发射机/接收机。
以众所周知的方式，发射机包括：放大器1，具有用于要发射的信号的输入接线端4；输出级3，具有通过端接电阻器7、8与如传输线等以负载11表示的传输介质相连的输出接线端5、6；以及负反馈电路2，其输入接线端与输出级3的输出接线端5、6相连，而其输出接线端与放大器1的输入接线端4相连，其中由反馈电路2的输出信号设定发射增益。
接收机9以输入接线端12、13跨接在负载11两端，并设置有用于输出接收到的信号的输出10。
在图1所示的发射机/接收机中，当端接电阻器7、8具有与负载11相同的合成电阻时，通过测量越过端接电阻器7、8的信号，提取出发射信号的一半和接收信号的一半。
发明内容
本发明的目的是提取出接收信号，而抑制发射信号。
按照本发明，通过将流入到发射机放大器中的接收电流转换为电压，并从传输线电压中减去此电压，以提取出接收电压，而抑制发射信号，来实现此目的。
根据本发明的方案，提出了一种包括发射机和接收机的双向通信系统，利用传输介质进行双向通信，所述发射机包括：放大器，具有用于要发射的信号的输入接线端；输出级，具有通过相应的电阻器与传输介质相连的两个输出接线端；以及负反馈电路，其输入接线端与输出级的两个输出接线端相连，而其输出接线端与放大器的输入接线端相连，所述接收机以两个第一输入接线端分别通过所述相应的电阻器与输出级的两个输出接线端相连，其特征在于电流反射镜以其输入接线端与放大器输出级的另一输出接线端相连，而其两个输出接线端通过对应的电阻器跨接在负载两端，所述负载跨接在所述接收机的两个第二输入接线端上，所述接收机适合于通过从所述两个第一输入接线端之间的电压中减去所述两个第二输入接线端之间的电压，而提取出从传输介质接收到的信号。
附图说明
下面将参照附图，对本发明进行详细的描述，其中：如上所述，图1示出了利用传输介质进行双向通信的已知发射机/接收机，而图2示出了依照本发明用于这种双向通信的发射机/接收机。
具体实施方式
在图2中，以相同的参考符号表示了与图1所示的元件相同的元件。
依照本发明，电流反射镜14以其输入接线端与放大器输出级3的输入接线端相连，而其输出接线端15、16通过电阻器17、18跨接在负载19两端。负载19的阻抗与传输介质或负载11的阻抗匹配，使得负载19的阻抗是负载11的阻抗的k倍。以相同的方式，电阻器17和18的电阻分别匹配为电阻器7和8的电阻的k倍。同样，将电流反射镜14中的电流设置为放大器输出级3中的电流的1/k倍。因子k用于减少在电阻器17、18和负载19中所消耗的电能。
负载19连接在接收机9′的输入接线端20、21之间。
依照本发明，接收机9′适合于通过从输入接线端12、13之间的电压中减去输入接线端20、21之间的电压而提取出从传输介质11接收到的信号。
发射信号在负载11和负载19上同相地出现，而接收信号在负载11上同相出现，在负载19上反向出现。
与图1相比较，这样导致，在图2所示的接收机9′的输出10上，接收信号加倍，而抑制了自身的发射信号、噪声和失真。
本发明特别适用在使用了有源终端负载的应用中，以及用在完全差分线路驱动器结构中。

Claims (5)

1.一种包括发射机和接收机的双向通信系统，利用传输介质(11)进行双向通信，所述发射机包括：放大器(1)，具有用于要发射的信号的输入接线端(4)；输出级(3)，具有通过相应的电阻器(7、8)与传输介质(11)相连的两个输出接线端(5、6)；以及负反馈电路(2)，其输入接线端与输出级(3)的两个输出接线端(5、6)相连，而其输出接线端与放大器(1)的输入接线端相连，所述接收机以两个第一输入接线端(12、13)分别通过所述相应的电阻器(7、8)与输出级(3)的两个输出接线端(5、6)相连，其特征在于电流反射镜(14)以其输入接线端与放大器输出级(3)的另一输出接线端相连，而其两个输出接线端(15、16)通过对应的电阻器(17、18)跨接在负载(19)两端，所述负载(19)跨接在所述接收机(9’)的两个第二输入接线端(20、21)上，所述接收机(9’)适合于通过从所述两个第一输入接线端(12、13)之间的电压中减去所述两个第二输入接线端(20、21)之间的电压，而提取出从传输介质(11)接收到的信号。
2.按照权利要求1所述的双向通信系统，其特征在于所述负载(19)和所述传输介质(11)是阻抗匹配的。
3.按照权利要求1或2所述的双向通信系统，其特征在于与所述电流反射镜(14)的所述两个输出接线端(15、16)相连的所述对应的电阻器(17、18)和与所述放大器输出级(3)的所述两个输出接线端(5、6)相连的所述相应的电阻器(7、8)是电阻匹配的。
4.按照权利要求1或2所述的双向通信系统，其特征在于所述负载(19)的阻抗是传输介质(11)的阻抗的k倍，与所述电流反射镜(14)的所述两个输出接线端(15、16)相连的所述对应的电阻器(17、18)的电阻是与所述放大器输出级(3)的所述两个输出接线端(5、6)相连的所述相应的电阻器(7、8)的电阻的k倍，以及将所述电流反射镜(14)中的电流设置为所述放大器输出级(3)中的电流的1/k倍，其中k大于1。
5.按照权利要求3所述的双向通信系统，其特征在于所述负载(19)的阻抗是传输介质(11)的阻抗的k倍，与所述电流反射镜(14)的所述两个输出接线端(15、16)相连的所述对应的电阻器(17、18)的电阻是与所述放大器输出级(3)的所述两个输出接线端(5、6)相连的所述相应的电阻器(7、8)的电阻的k倍，以及将所述电流反射镜(14)中的电流设置为所述放大器输出级(3)中的电流的1/k倍，其中k大于1。
CNB038002736A 2002-03-04 2003-02-26 双向通信系统 Expired - Fee Related CN100372243C (zh)

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SE0200666A SE521549C2 (sv) 2002-03-04 2002-03-04 Sändare/mottagare för dubbelriktad kommunikation

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EP (1) EP1481488B1 (zh)
JP (1) JP4163628B2 (zh)
KR (1) KR100694632B1 (zh)
CN (1) CN100372243C (zh)
AU (1) AU2003206580A1 (zh)
DE (1) DE60300866T2 (zh)
SE (1) SE521549C2 (zh)
WO (1) WO2003075478A1 (zh)

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US8035507B2 (en) 2008-10-28 2011-10-11 Cooper Technologies Company Method and apparatus for stimulating power line carrier injection with reactive oscillation
US20100289629A1 (en) * 2008-10-28 2010-11-18 Cooper Technologies Company Load Control Device with Two-Way Communication Capabilities

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SE0200666D0 (sv) 2002-03-04
CN1515084A (zh) 2004-07-21
EP1481488A1 (en) 2004-12-01
JP4163628B2 (ja) 2008-10-08
KR20040031054A (ko) 2004-04-09
SE0200666L (sv) 2003-09-05
EP1481488B1 (en) 2005-06-15
DE60300866T2 (de) 2006-05-11
US20050063477A1 (en) 2005-03-24
DE60300866D1 (de) 2005-07-21
US7221702B2 (en) 2007-05-22
WO2003075478A1 (en) 2003-09-12
AU2003206580A1 (en) 2003-09-16
JP2005519519A (ja) 2005-06-30
SE521549C2 (sv) 2003-11-11
KR100694632B1 (ko) 2007-03-13

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