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1.发明申请Apparatus and Method for Digital to Analog Conversion with Current Mirror Amplification 有权用电流镜放大器进行数模转换的装置和方法公开(公告)号：US20150222286A1
公开(公告)日：2015-08-06
申请号：US14173595
申请日：2014-02-05
Applicant: Innophase, Inc.
Inventor： Xuejun Zhang , Yang Xu
CPC classification number: H03M3/50 , G05F1/625 , G05F3/262 , H03F3/04 , H03M1/00 , H03M1/002 , H03M1/0854 , H03M1/742 , H03M1/747
Abstract: A DAC using current mirrors suitable for use in a modulator. Embodiments include a current-generating circuit to provide an information signal; a bias current source; a current mirror having a mirror input transistor connected to the current generating circuit and the bias current source, and being driven by the bias current and the varying current signal and having a corresponding varying voltage signal at a control terminal; a signal shaping filter interposed between the mirror input transistor and an output mirror transistor configured to limit a bandwidth of the varying voltage signal; the output mirror transistor configured to generate a band-limited varying current signal and a mirrored bias current; and, a mirrored bias current reduction circuit connected to the output mirror transistor configured to reduce the mirrored bias current.
Abstract translation: 使用适合用于调制器的电流镜的DAC。 实施例包括提供信息信号的电流产生电路; 偏置电流源; 电流镜，其具有连接到电流产生电路和偏置电流源的反射镜输入晶体管，并由偏置电流和变化的电流信号驱动，并且在控制端处具有相应的变化电压信号; 插入在所述反射镜输入晶体管和被配置为限制所述变化的电压信号的带宽的输出镜像晶体管之间的信号整形滤波器; 所述输出镜晶体管被配置为产生带限变化电流信号和镜像偏置电流; 以及连接到输出镜晶体管的镜像偏置电流降低电路，被配置为减少镜像偏置电流。
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公开(公告)号：US20140266454A1
公开(公告)日：2014-09-18
申请号：US13839462
申请日：2013-03-15
Applicant: INNOPHASE, INC.
Inventor： Nicolo Testi , Xi Li , Xuejun Zhang , Yang Xu
IPC: H03G3/00
CPC classification number: H03G3/008 , H03G1/0029 , H03G1/0088 , H03G5/14 , H03G5/24
Abstract: A low noise amplifier including a variable gain amplifier stage configured to accept an input signal and to provide a load driving signal; a tunable bandpass filter connected as a load to the variable gain amplifier stage, wherein the bandpass filter includes a cross-coupled transistor pair, and at least one cross-coupled compensation transistor pair biased in a subthreshold region configured to add a transconductance component when the load driving signal is of a magnitude large enough to decreases a transconductance of the cross-coupled transistor pair; and, a controller circuit configured to tune the bandpass filter. The filter can be tuned in respect to the frequency and the quality factor Q.
Abstract translation: 一种低噪声放大器，包括可变增益放大器级，其被配置为接受输入信号并提供负载驱动信号; 作为负载连接到可变增益放大器级的可调谐带通滤波器，其中所述带通滤波器包括交叉耦合晶体管对，以及偏置在亚阈值区域中的至少一个交叉耦合补偿晶体管对，其配置成当所述跨导分量 负载驱动信号的幅度足够大以减小交叉耦合晶体管对的跨导; 以及配置为调谐带通滤波器的控制器电路。 滤波器可以根据频率和质量因子Q进行调整。
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公开(公告)号：US20140185708A1
公开(公告)日：2014-07-03
申请号：US13842470
申请日：2013-03-15
Applicant: INNOPHASE, INC.
Inventor： Yang Xu , Xuejun Zhang
IPC: H04L25/03
CPC classification number: H04L25/03834 , H03M1/685 , H04L25/0384 , H04L27/34
Abstract: Single-bit transmitter modulator having a digital pulse shaping filter configured to shape data pulses of an inphase signal and quadrature signal; an upsampling filter configured to increase the sample rate of the inphase signal and quadrature signal; a sigma-delta modulator providing a one-bit inphase output signal and a one-bit quadrature output signal; an inphase low-order analog low pass filter coupling the one-bit inphase output signal to an inphase channel input of a quadrature modulator, and a quadrature low-order analog low pass filter coupling the one-bit quadrature output signal to a quadrature channel input of a quadrature modulator; and, wherein the quadrature modulator is connected to a carrier signal generator and is configured to generate an inphase and quadrature modulated carrier.
Abstract translation: 具有数字脉冲整形滤波器的单位发射调制器，被配置为对同相信号和正交信号的数据脉冲进行整形; 上采样滤波器，被配置为增加同相信号和正交信号的采样率; 提供一位同相输出信号和一位正交输出信号的Σ-Δ调制器; 将一位同相输出信号耦合到正交调制器的同相通道输入的同相低阶模拟低通滤波器，以及正交低阶模拟低通滤波器，将一位正交输出信号耦合到正交通道输入 的正交调制器; 并且其中所述正交调制器连接到载波信号发生器并被配置为产生同相和正交调制载波。
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Patent Agency Ranking
4.发明授权Apparatus and method for digital to analog conversion with current mirror amplification 有权用于电流镜像放大的数模转换的装置和方法公开(公告)号：US09203420B2
公开(公告)日：2015-12-01
申请号：US14173595
申请日：2014-02-05
Applicant: Innophase, Inc.
Inventor： Xuejun Zhang , Yang Xu
CPC classification number: H03M3/50 , G05F1/625 , G05F3/262 , H03F3/04 , H03M1/00 , H03M1/002 , H03M1/0854 , H03M1/742 , H03M1/747
Abstract: A DAC using current mirrors suitable for use in a modulator. Embodiments include a current-generating circuit to provide an information signal; a bias current source; a current mirror having a mirror input transistor connected to the current generating circuit and the bias current source, and being driven by the bias current and the varying current signal and having a corresponding varying voltage signal at a control terminal; a signal shaping filter interposed between the mirror input transistor and an output mirror transistor configured to limit a bandwidth of the varying voltage signal; the output mirror transistor configured to generate a band-limited varying current signal and a mirrored bias current; and, a mirrored bias current reduction circuit connected to the output mirror transistor configured to reduce the mirrored bias current.
Abstract translation: 使用适合用于调制器的电流镜的DAC。 实施例包括提供信息信号的电流产生电路; 偏置电流源; 电流镜，其具有连接到电流产生电路和偏置电流源的反射镜输入晶体管，并由偏置电流和变化的电流信号驱动，并且在控制端处具有相应的变化电压信号; 插入在所述反射镜输入晶体管和被配置为限制所述变化的电压信号的带宽的输出镜像晶体管之间的信号整形滤波器; 所述输出镜晶体管被配置为产生带限变化电流信号和镜像偏置电流; 以及连接到输出镜晶体管的镜像偏置电流降低电路，被配置为减少镜像偏置电流。
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公开(公告)号：US08941441B2
公开(公告)日：2015-01-27
申请号：US13839462
申请日：2013-03-15
Applicant: Innophase, Inc.
Inventor： Nicolo Testi , Xi Li , Xuejun Zhang , Yang Xu
IPC: H03F3/45
CPC classification number: H03G3/008 , H03G1/0029 , H03G1/0088 , H03G5/14 , H03G5/24
Abstract: A low noise amplifier including a variable gain amplifier stage configured to accept an input signal and to provide a load driving signal; a tunable bandpass filter connected as a load to the variable gain amplifier stage, wherein the bandpass filter includes a cross-coupled transistor pair, and at least one cross-coupled compensation transistor pair biased in a subthreshold region configured to add a transconductance component when the load driving signal is of a magnitude large enough to decreases a transconductance of the cross-coupled transistor pair; and, a controller circuit configured to tune the bandpass filter. The filter can be tuned in respect to the frequency and the quality factor Q.
Abstract translation: 一种低噪声放大器，包括可变增益放大器级，其被配置为接受输入信号并提供负载驱动信号; 作为负载连接到可变增益放大器级的可调谐带通滤波器，其中所述带通滤波器包括交叉耦合晶体管对，以及偏置在亚阈值区域中的至少一个交叉耦合补偿晶体管对，其配置成当所述跨导分量 负载驱动信号的幅度足够大以减小交叉耦合晶体管对的跨导; 以及配置为调谐带通滤波器的控制器电路。 滤波器可以根据频率和质量因子Q进行调整。
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公开(公告)号：US09438267B2
公开(公告)日：2016-09-06
申请号：US14955963
申请日：2015-12-01
Applicant: Innophase, Inc.
Inventor： Xuejun Zhang , Yang Xu
CPC classification number: H03M3/50 , G05F1/625 , G05F3/262 , H03F3/04 , H03M1/00 , H03M1/002 , H03M1/0854 , H03M1/742 , H03M1/747
Abstract: A DAC using current mirrors suitable for use in a modulator. Embodiments include a current-generating circuit to provide an information signal; a bias current source; a current mirror having a mirror input transistor connected to the current generating circuit and the bias current source, and being driven by the bias current and the varying current signal and having a corresponding varying voltage signal at a control terminal; a signal shaping filter interposed between the mirror input transistor and an output mirror transistor configured to limit a bandwidth of the varying voltage signal; the output mirror transistor configured to generate a band-limited varying current signal and a mirrored bias current; and, a mirrored bias current reduction circuit connected to the output mirror transistor configured to reduce the mirrored bias current.
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公开(公告)号：US09020066B2
公开(公告)日：2015-04-28
申请号：US13842470
申请日：2013-03-15
Applicant: Innophase, Inc.
Inventor： Yang Xu , Xuejun Zhang
CPC classification number: H04L25/03834 , H03M1/685 , H04L25/0384 , H04L27/34
Abstract: Single-bit transmitter modulator having a digital pulse shaping filter configured to shape data pulses of an inphase signal and quadrature signal; an upsampling filter configured to increase the sample rate of the inphase signal and quadrature signal; a sigma-delta modulator providing a one-bit inphase output signal and a one-bit quadrature output signal; an inphase low-order analog low pass filter coupling the one-bit inphase output signal to an inphase channel input of a quadrature modulator, and a quadrature low-order analog low pass filter coupling the one-bit quadrature output signal to a quadrature channel input of a quadrature modulator; and, wherein the quadrature modulator is connected to a carrier signal generator and is configured to generate an inphase and quadrature modulated carrier.
Abstract translation: 具有数字脉冲整形滤波器的单位发射调制器，被配置为对同相信号和正交信号的数据脉冲进行整形; 上采样滤波器，被配置为增加同相信号和正交信号的采样率; 提供一位同相输出信号和一位正交输出信号的Σ-Δ调制器; 将一位同相输出信号耦合到正交调制器的同相通道输入的同相低阶模拟低通滤波器，以及正交低阶模拟低通滤波器，将一位正交输出信号耦合到正交通道输入 的正交调制器; 并且其中所述正交调制器连接到载波信号发生器并被配置为产生同相和正交调制载波。
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公开(公告)号：US20160087645A1
公开(公告)日：2016-03-24
申请号：US14955963
申请日：2015-12-01
Applicant: Innophase, Inc.
Inventor： Xuejun Zhang , Yang Xu
CPC classification number: H03M3/50 , G05F1/625 , G05F3/262 , H03F3/04 , H03M1/00 , H03M1/002 , H03M1/0854 , H03M1/742 , H03M1/747
Abstract: A DAC using current mirrors suitable for use in a modulator. Embodiments include a current-generating circuit to provide an information signal; a bias current source; a current mirror having a mirror input transistor connected to the current generating circuit and the bias current source, and being driven by the bias current and the varying current signal and having a corresponding varying voltage signal at a control terminal; a signal shaping filter interposed between the mirror input transistor and an output mirror transistor configured to limit a bandwidth of the varying voltage signal; the output mirror transistor configured to generate a band-limited varying current signal and a mirrored bias current; and, a mirrored bias current reduction circuit connected to the output mirror transistor configured to reduce the mirrored bias current.
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