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公开(公告)号：US08135372B2
公开(公告)日：2012-03-13
申请号：US12555355
申请日：2009-09-08
CPC分类号： H04B1/109
摘要： Techniques are disclosed for eliminating or otherwise sufficiently suppressing spurious signals. The techniques are particularly useful in applications such as those that employ aggressor frequency sources along with a frequency conversion or mixing function, and especially applications implemented as a system-on-chip. In the spur-training mode, a spur-canceller circuit identifies spurious tones associated with the host system to neutralize those tones when running in a normal mode. The tones are neutralized using a comb generator with variable phase and gain by way of cancellation with comb output signals having substantially the same amplitude and a phase that is 180° out of phase with the aggressor tone to be cancelled.
摘要翻译： 公开了用于消除或以其他方式充分抑制杂散信号的技术。 这些技术在诸如那些采用侵扰频率源以及频率转换或混频功能的应用中尤其有用，特别是作为片上系统实现的应用。 在辅助训练模式中，一个消音器电路识别与主机系统相关联的杂音，以便在正常模式下运行时中和这些音调。 使用具有可变相位和增益的梳状发生器，通过具有基本上相同振幅的梳状输出信号和与被抵消的侵略音相位相差180°的相位来消除色调。
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公开(公告)号：US20110059714A1
公开(公告)日：2011-03-10
申请号：US12555355
申请日：2009-09-08
IPC分类号： H04B1/10
CPC分类号： H04B1/109
摘要： Techniques are disclosed for eliminating or otherwise sufficiently suppressing spurious signals. The techniques are particularly useful in applications such as those that employ aggressor frequency sources along with a frequency conversion or mixing function, and especially applications implemented as a system-on-chip. In the spur-training mode, a spur-canceller circuit identifies spurious tones associated with the host system to neutralize those tones when running in a normal mode. The tones are neutralized using a comb generator with variable phase and gain by way of cancellation with comb output signals having substantially the same amplitude and a phase that is 180° out of phase with the aggressor tone to be cancelled.
摘要翻译： 公开了用于消除或以其他方式充分抑制杂散信号的技术。 这些技术在诸如那些采用侵扰频率源以及频率转换或混频功能的应用中尤其有用，特别是作为片上系统实现的应用。 在辅助训练模式中，一个消音器电路识别与主机系统相关联的杂音，以便在正常模式下运行时中和这些音调。 使用具有可变相位和增益的梳状发生器，通过具有基本上相同振幅的梳状输出信号和与被抵消的侵略音相位相差180°的相位来消除色调。
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公开(公告)号：US20100327941A1
公开(公告)日：2010-12-30
申请号：US12492682
申请日：2009-06-26
IPC分类号： G06G7/16
CPC分类号： G06G7/16
摘要： A Gilbert cell mixer design is disclosed. Instead of using a differential transconductance stage as typically done, the design employs a differential transimpedance amplifier input stage. By utilizing a transimpedance input stage to the Gilbert mixer, feedback is used to obtain higher linearity without sacrificing noise performance. The transimpedance input stage supplies a current signal to the cascode connected Gilbert switching quad, so the transimpedance amplifier output is taken from the collector of the transimpedance amplifier output transistor, instead of the emitter as normally done with transimpedance amplifiers.
摘要翻译： 公开了吉尔伯特细胞混合器设计。 代替通常使用差分跨导级，该设计采用差分跨阻放大器输入级。 通过利用吉姆伯特混频器的跨阻输入级，使用反馈来获得更高的线性度而不牺牲噪声性能。 跨阻输入级将电流信号提供给共源共栅连接的吉尔伯特开关四极管，因此跨阻放大器输出取自跨阻放大器输出晶体管的集电极，而不是通常用跨阻放大器完成的发射极。
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公开(公告)号：US08089309B2
公开(公告)日：2012-01-03
申请号：US12492682
申请日：2009-06-26
IPC分类号： G06G7/12
CPC分类号： G06G7/16
摘要： A Gilbert cell mixer design is disclosed. Instead of using a differential transconductance stage as typically done, the design employs a differential transimpedance amplifier input stage. By utilizing a transimpedance input stage to the Gilbert mixer, feedback is used to obtain higher linearity without sacrificing noise performance. The transimpedance input stage supplies a current signal to the cascode connected Gilbert switching quad, so the transimpedance amplifier output is taken from the collector of the transimpedance amplifier output transistor, instead of the emitter as normally done with transimpedance amplifiers.
摘要翻译： 公开了吉尔伯特细胞混合器设计。 代替通常使用差分跨导级，该设计采用差分跨阻放大器输入级。 通过利用吉姆伯特混频器的跨阻输入级，使用反馈来获得更高的线性度而不牺牲噪声性能。 跨阻输入级将电流信号提供给共源共栅连接的吉尔伯特开关四极管，因此跨阻放大器输出取自跨阻放大器输出晶体管的集电极，而不是通常用跨阻放大器完成的发射极。
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公开(公告)号：US07911293B2
公开(公告)日：2011-03-22
申请号：US12492689
申请日：2009-06-26
IPC分类号： H03G3/20
CPC分类号： H03G1/0088 , H03F1/56 , H03F2200/211 , H03F2200/222 , H03H7/40 , H03H11/245
摘要： Techniques are disclosed that allow for programmable attenuation using thermometer code steps. By thermometer coding the attenuator structure, monotonicity is guaranteed or otherwise greatly improved, which eliminates instability problems with automatic gain control loops and without the need for compensation or trimming. In addition, the thermometer coding technique also greatly reduces phase discontinuity between adjacent gain states.
摘要翻译： 公开了允许使用温度计代码步骤的可编程衰减的技术。 通过对衰减器结构进行温度计编码，保证单调性或以其他方式大大改善，这消除了自动增益控制环路的不稳定性问题，无需补偿或修整。 此外，温度计编码技术还大大减少了相邻增益状态之间的相位不连续性。
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公开(公告)号：US20100327998A1
公开(公告)日：2010-12-30
申请号：US12492689
申请日：2009-06-26
IPC分类号： H01P1/22
CPC分类号： H03G1/0088 , H03F1/56 , H03F2200/211 , H03F2200/222 , H03H7/40 , H03H11/245
摘要： Techniques are disclosed that allow for programmable attenuation using thermometer code steps. By thermometer coding the attenuator structure, monotonicity is guaranteed or otherwise greatly improved, which eliminates instability problems with automatic gain control loops and without the need for compensation or trimming. In addition, the thermometer coding technique also greatly reduces phase discontinuity between adjacent gain states.
摘要翻译： 公开了允许使用温度计代码步骤的可编程衰减的技术。 通过对衰减器结构进行温度计编码，保证单调性或以其他方式大大改善，这消除了自动增益控制环路的不稳定性问题，无需补偿或修整。 此外，温度计编码技术还大大减少了相邻增益状态之间的相位不连续性。
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公开(公告)号：US20110053541A1
公开(公告)日：2011-03-03
申请号：US12548249
申请日：2009-08-26
IPC分类号： H04B1/06
CPC分类号： H04B1/109
摘要： Receiver power techniques are disclosed that allow for real-time adjustment of receiver dynamic range by virtue of supplied DC power, based on signal strengths currently received by the receiver. The disclosed techniques use real-time monitoring of receiver output to detect the presence of large signals, and to then adjust bias points in the receiver to reduce DC power consumption in the absence of large signals. By adapting the power to the current signal environment by autonomously adjusting the bias points, the mean power consumption of the receiver can be greatly reduced. This in turn has a number of benefits, such as increased battery life, decreased heat, increased circuit lifetime, and decreased noise figure.
摘要翻译： 公开了接收机功率技术，其基于由接收机当前接收的信号强度，借助于提供的直流功率实现对接收机动态范围的实时调整。 所公开的技术使用接收器输出的实时监测来检测大信号的存在，然后在接收机中调整偏置点以在没有大信号的情况下降低DC功率消耗。 通过自主调整偏置点来调整当前信号环境的功率，可以大大降低接收机的平均功耗。 这反过来具有许多益处，例如延长电池寿命，减少热量，增加电路寿命和降低噪声系数。
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公开(公告)号：US08179186B2
公开(公告)日：2012-05-15
申请号：US12535596
申请日：2009-08-04
CPC分类号： H03K19/001
摘要： Techniques are disclosed for reducing off-state leakage current in a differential switching device. The techniques can be embodied, for example, in a method that includes receiving a differential input signal at a differential input of each of a primary switch and a dummy switch. In an enabled-state of the device, the method further includes passing the differential input signal to a differential output of the primary switch. In a disabled-state of the device, the method further includes canceling off-state leakage current at the differential output of the primary switch, by virtue of the dummy switch having its differential output reverse-coupled to the differential output of the primary switch. The method may further include preventing the dummy switch from passing signals other than off-state leakage signals. The techniques can be embodied, for instance, in a switching device.
摘要翻译： 公开了用于减小差分开关装置中的截止状态漏电流的技术。 这些技术可以例如在包括在初级开关和虚拟开关中的每一个的差分输入处接收差分输入信号的方法中实现。 在器件的使能状态下，该方法还包括将差分输入信号传递到主开关的差分输出。 在该器件的禁止状态下，该方法进一步包括借助于具有与主开关的差分输出反向耦合的差分输出的虚拟开关来消除初级开关的差分输出处的截止状态泄漏电流。 该方法还可以包括防止虚拟开关传递除了截止状态泄漏信号之外的信号。 这些技术可以例如在开关装置中实现。
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公开(公告)号：US08130056B2
公开(公告)日：2012-03-06
申请号：US13026349
申请日：2011-02-14
IPC分类号： H03G3/20
CPC分类号： H03G1/0088 , H03F1/56 , H03F2200/211 , H03F2200/222 , H03H7/40 , H03H11/245
摘要： Techniques are disclosed that allow for programmable attenuation using thermometer code steps. By thermometer coding the attenuator structure, monotonicity is guaranteed or otherwise greatly improved, which eliminates instability problems with automatic gain control loops and without the need for compensation or trimming. In addition, the thermometer coding technique also greatly reduces phase discontinuity between adjacent gain states.
摘要翻译： 公开了允许使用温度计代码步骤的可编程衰减的技术。 通过对衰减器结构进行温度计编码，保证单调性或以其他方式大大改善，这消除了自动增益控制环路的不稳定性问题，无需补偿或修整。 此外，温度计编码技术还大大减少了相邻增益状态之间的相位不连续性。
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公开(公告)号：US20110032022A1
公开(公告)日：2011-02-10
申请号：US12535596
申请日：2009-08-04
CPC分类号： H03K19/001
摘要： Techniques are disclosed for reducing off-state leakage current in a differential switching device. The techniques can be embodied, for example, in a method that includes receiving a differential input signal at a differential input of each of a primary switch and a dummy switch. In an enabled-state of the device, the method further includes passing the differential input signal to a differential output of the primary switch. In a disabled-state of the device, the method further includes canceling off-state leakage current at the differential output of the primary switch, by virtue of the dummy switch having its differential output reverse-coupled to the differential output of the primary switch. The method may further include preventing the dummy switch from passing signals other than off-state leakage signals. The techniques can be embodied, for instance, in a switching device.
摘要翻译： 公开了用于减小差分开关装置中的截止状态漏电流的技术。 这些技术可以例如在包括在初级开关和虚拟开关中的每一个的差分输入处接收差分输入信号的方法中实现。 在器件的使能状态下，该方法还包括将差分输入信号传递到主开关的差分输出。 在该器件的禁止状态下，该方法进一步包括借助于具有与主开关的差分输出反向耦合的差分输出的虚拟开关来消除初级开关的差分输出处的截止状态泄漏电流。 该方法还可以包括防止虚拟开关传递除了截止状态泄漏信号之外的信号。 这些技术可以例如在开关装置中实现。
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