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    • 1. 发明申请
    • CALIBRATION OF LINEAR TIME-INVARIANT SYSTEM'S STEP RESPONSE
    • 线性时间不确定系统的步骤响应的校准
    • WO2009136329A1
    • 2009-11-12
    • PCT/IB2009/051762
    • 2009-04-30
    • NXP B.V.JEURISSEN, DennisDE JONG, Gerben, W.VAN SINDEREN, Jan
    • JEURISSEN, DennisDE JONG, Gerben, W.VAN SINDEREN, Jan
    • G01R23/08
    • G01R31/2837
    • The invention concerns in general measurement of the transfer function of linear time invariant systems, more particular the calibration of such systems based on a measured transfer function. According to a first aspect the present invention an arrangement for measuring the transfer function of a linear time-invariant system is disclosed. According to a second aspect of the present invention the arrangement is implemented into a linear time- invariant circuitry having a transfer function representing the amplitude and phase characteristic of the circuitry, where by means of the arrangement for measuring the transfer function the transfer function can be optimized in accordance with certain criteria on-the-fly, i.e. in or before operation of the circuit. Finally, an effective and simple method for measuring of the transfer function of a linear time-invariant system together with the use or application of the method is shown.
    • 本发明涉及线性时间不变系统的传递函数的一般测量,更具体地,基于测量的传递函数来校准这样的系统。 根据第一方面,本发明公开了一种用于测量线性时不变系统的传递函数的装置。 根据本发明的第二方面,该装置被实现为具有表示电路的幅度和相位特性的传递函数的线性时不变电路,其中通过用于测量传递函数的布置,传递函数可以是 根据某些标准进行优化,即在电路运行期间或之前进行。 最后,显示了一种用于测量线性时不变系统的传递函数以及该方法的使用或应用的有效和简单的方法。
    • 2. 发明申请
    • LOW-1/F-NOISE LOCAL OSCILLATOR FOR NON-OVERLAPPING DIFFERENTIAL I/Q SIGNALS
    • 用于非重叠差分I / Q信号的低1 / F噪声局部振荡器
    • WO2009144642A3
    • 2010-01-21
    • PCT/IB2009052133
    • 2009-05-21
    • NXP BVDE JONG GERBEN WJEURISSEN DENNIS
    • DE JONG GERBEN WJEURISSEN DENNIS
    • H03D7/16H03K5/156H03K17/28
    • H03D7/166H03K5/1565H03K17/28
    • The present invention relates to a circuit arrangement (300) for generating non-overlapping and immune-to-1/f-noise signals as has been described. A break-before- make (BBM) circuit ensures that the differential I/Q signals (LO_0, LO_90, LO_180, LO_270), driving the transistors (M11, M12, M21, M22) of mixers (16A, 16B) in an RF receiver (200), are non-overlapping for having at any time only one of these transistors turned on. The duty cycle of each driving signal is measured, and the difference (?) in the duty cycle corresponding to two subsequent LO phases is determined through a respective differential amplifier (38A-38D). Each differential amplifier is configured to have a current output (LT_0, LT_90, LT_180, LT_270), which is then fed back to the input of the input buffer (30A-30D) corresponding to the first LO phase in order to adjust its logic threshold (LT) level and make the difference (?) equal to zero. Thereby, the combined action of the BBM circuit and the feedback loops results in four non-overlapping differential I/Q signals (LO_0, LO_90, LO_180, LO_270) with constant and mutually equal duty cycles, and fixed and well-defined relative positions.
    • 本发明涉及如上所述的用于产生不重叠和免疫-1-f噪声信号的电路装置(300)。 断开(BBM)电路确保驱动RF中的混频器(16A,16B)的晶体管(M11,M12,M21,M22)的差分I / Q信号(LO_0,LO_90,LO_180,LO_270) 接收器(200)不重叠,以便随时只有这些晶体管中的一个导通。 测量每个驱动信号的占空比,并且通过相应的差分放大器(38A-38D)确定与两个后续LO相位相对应的占空比中的差(α)。 每个差分放大器被配置为具有电流输出(LT_0,LT_90,LT_180,LT_270),然后将其反馈到与第一LO相对应的输入缓冲器(30A-30D)的输入,以便调整其逻辑阈值 (LT)电平,并使差值(?)等于零。 因此,BBM电路和反馈环路的组合动作产生具有恒定且相互相等的占空比的四个不重叠的差分I / Q信号(LO_0,LO_90,LO_180,LO_270)以及固定且明确定义的相对位置。
    • 9. 发明申请
    • LOW-1/F-NOISE LOCAL OSCILLATOR FOR NON-OVERLAPPING DIFFERENTIAL I/Q SIGNALS
    • 用于非重叠差分I / Q信号的低1 / F噪声局部振荡器
    • WO2009144642A2
    • 2009-12-03
    • PCT/IB2009/052133
    • 2009-05-21
    • NXP B.V.DE JONG, Gerben, W.JEURISSEN, Dennis
    • DE JONG, Gerben, W.JEURISSEN, Dennis
    • H03K17/28H03K5/04H03K5/156H03D7/16
    • H03D7/166H03K5/1565H03K17/28
    • The present invention relates to a circuit arrangement (300) for generating non-overlapping and immune-to-1/f-noise signals as has been described. A break-before- make (BBM) circuit ensures that the differential I/Q signals (LO_0, LO_90, LO_180, LO_270), driving the transistors (M11, M12, M21, M22) of mixers (16A, 16B) in an RF receiver (200), are non-overlapping for having at any time only one of these transistors turned on. The duty cycle of each driving signal is measured, and the difference (Δ) in the duty cycle corresponding to two subsequent LO phases is determined through a respective differential amplifier (38A-38D). Each differential amplifier is configured to have a current output (LT_0, LT_90, LT_180, LT_270), which is then fed back to the input of the input buffer (30A-30D) corresponding to the first LO phase in order to adjust its logic threshold (LT) level and make the difference (Δ) equal to zero. Thereby, the combined action of the BBM circuit and the feedback loops results in four non-overlapping differential I/Q signals (LO_0, LO_90, LO_180, LO_270) with constant and mutually equal duty cycles, and fixed and well-defined relative positions.
    • 本发明涉及如上所述的用于产生不重叠和免疫-1-f噪声信号的电路装置(300)。 断开(BBM)电路确保驱动RF中的混频器(16A,16B)的晶体管(M11,M12,M21,M22)的差分I / Q信号(LO_0,LO_90,LO_180,LO_270) 接收器(200)不重叠,以便随时只有这些晶体管中的一个导通。 测量每个驱动信号的占空比,并且通过相应的差分放大器(38A-38D)确定与两个后续LO相位相对应的占空比中的差(α)。 每个差分放大器被配置为具有电流输出(LT_0,LT_90,LT_180,LT_270),然后将其反馈到与第一LO相对应的输入缓冲器(30A-30D)的输入,以便调整其逻辑阈值 (LT)电平,并使差值(?)等于零。 因此,BBM电路和反馈环路的组合动作产生具有恒定且相互相等的占空比的四个不重叠的差分I / Q信号(LO_0,LO_90,LO_180,LO_270)以及固定且明确定义的相对位置。