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    • 1. 发明授权
    • Mixer used for direct conversion receiver
    • 搅拌机用于直接转换接收机
    • US07991376B2
    • 2011-08-02
    • US12106475
    • 2008-04-21
    • Won KoSung-gi Yang
    • Won KoSung-gi Yang
    • H04B1/26
    • H03D7/1441H03D7/1458H03D7/1491H03D2200/0033H03D2200/0047
    • Provided is a mixer including a mixing unit configured to mix high frequency data signals and local oscillation (LO) signals, generate first and second low frequency data signals, and output the first and second low frequency data signals to first and second output terminals, respectively; a common mode amplification unit coupled to the mixing unit, the common mode amplification unit configured to compare a common mode voltage of the first and second low frequency data signals and a predetermined reference voltage, the common mode amplification unit further configured to output a feedback signal at a control node based on the comparison; a first load transistor coupled to the first output terminal and the control node, the first load transistor configured to provide the first output terminal with a first load current corresponding to the feedback signal; a first calibration transistor unit connected in parallel to the first load transistor in order to calibrate an input impedance of the first output terminal; and a first current mirror unit coupled to the first calibration transistor unit, the first current mirror unit configured to discharge a first calibration current that is output from the first calibration transistor unit to prevent the first calibration current from entering the first output terminal.
    • 提供一种混频器,包括:混合单元,被配置为混合高频数据信号和本地振荡(LO)信号,产生第一和第二低频数据信号,并将第一和第二低频数据信号分别输出到第一和第二输出端 ; 耦合到所述混合单元的共模放大单元,所述共模放大单元被配置为比较所述第一和第二低频数据信号的共模电压和预定参考电压,所述共模放大单元还被配置为输出反馈信号 在控制节点的基础上进行比较; 耦合到所述第一输出端子和所述控制节点的第一负载晶体管,所述第一负载晶体管被配置为向所述第一输出端子提供与所述反馈信号相对应的第一负载电流; 第一校准晶体管单元,与第一负载晶体管并联连接,以校准第一输出端的输入阻抗; 以及耦合到所述第一校准晶体管单元的第一电流镜单元,所述第一电流镜单元被配置为对从所述第一校准晶体管单元输出的第一校准电流进行放电,以防止所述第一校准电流进入所述第一输出端。
    • 2. 发明申请
    • MIXER USED FOR DIRECT CONVERSION RECEIVER
    • 混合器用于直接转换接收器
    • US20080280584A1
    • 2008-11-13
    • US12106475
    • 2008-04-21
    • Won KoSung-gi Yang
    • Won KoSung-gi Yang
    • H04B1/06
    • H03D7/1441H03D7/1458H03D7/1491H03D2200/0033H03D2200/0047
    • Provided is a mixer including a mixing unit configured to mix high frequency data signals and local oscillation (LO) signals, generate first and second low frequency data signals, and output the first and second low frequency data signals to first and second output terminals, respectively; a common mode amplification unit coupled to the mixing unit, the common mode amplification unit configured to compare a common mode voltage of the first and second low frequency data signals and a predetermined reference voltage, the common mode amplification unit further configured to output a feedback signal at a control node based on the comparison; a first load transistor coupled to the first output terminal and the control node, the first load transistor configured to provide the first output terminal with a first load current corresponding to the feedback signal; a first calibration transistor unit connected in parallel to the first load transistor in order to calibrate an input impedance of the first output terminal; and a first current mirror unit coupled to the first calibration transistor unit, the first current mirror unit configured to discharge a first calibration current that is output from the first calibration transistor unit to prevent the first calibration current from entering the first output terminal.
    • 提供一种混频器,包括:混合单元,被配置为混合高频数据信号和本地振荡(LO)信号,产生第一和第二低频数据信号,并将第一和第二低频数据信号分别输出到第一和第二输出端 ; 耦合到所述混合单元的共模放大单元,所述共模放大单元被配置为比较所述第一和第二低频数据信号的共模电压和预定参考电压,所述共模放大单元还被配置为输出反馈信号 在控制节点的基础上进行比较; 耦合到所述第一输出端子和所述控制节点的第一负载晶体管,所述第一负载晶体管被配置为向所述第一输出端子提供与所述反馈信号相对应的第一负载电流; 第一校准晶体管单元,与第一负载晶体管并联连接,以校准第一输出端的输入阻抗; 以及耦合到所述第一校准晶体管单元的第一电流镜单元,所述第一电流镜单元被配置为对从所述第一校准晶体管单元输出的第一校准电流进行放电,以防止所述第一校准电流进入所述第一输出端。