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公开(公告)号：US08767814B2
公开(公告)日：2014-07-01
申请号：US13417000
申请日：2012-03-09
IPC分类号： H03K7/08
CPC分类号： H03K7/08 , H04L25/4902
摘要： A pulse-width modulator (PWM) includes a plurality of comparators for comparing an input signal with a plurality of reference signals and for providing a plurality of corresponding comparison signals. The pulse-width modulator also includes a combinational logic for receiving the plurality of comparison signals and for generating a plurality of binary pulse-width modulation signals on the basis of the plurality of comparison signals. At most only a currently selected binary pulse-width modulation signal of the binary pulse-width modulation signals is at a first signal level at a time. The currently selected binary pulse-width modulation signal is associated to a specific reference signal of the plurality of reference signals which is currently closest to the input signal among the plurality of reference signals in terms of a given amplitude relation between the plurality of reference signals and the input signal.
摘要翻译： 脉冲宽度调制器（PWM）包括多个比较器，用于将输入信号与多个参考信号进行比较，并用于提供多个对应的比较信号。 脉冲宽度调制器还包括用于接收多个比较信号的组合逻辑，并且用于基于多个比较信号产生多个二进制脉冲宽度调制信号。 二进制脉冲宽度调制信号中最多只有当前选择的二进制脉宽调制信号一次处于第一信号电平。 当前选择的二进制脉冲宽度调制信号与多个参考信号中当前最接近多个参考信号中的输入信号的特定参考信号相关联，就多个参考信号和 输入信号。
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公开(公告)号：US08970295B2
公开(公告)日：2015-03-03
申请号：US13603313
申请日：2012-09-04
CPC分类号： H03F3/217 , H03F1/0205 , H03F3/2171 , H03F3/2176 , H03F3/245
摘要： In accordance with an embodiment, a system includes a first amplifier and a first bandpass filter having an input coupled in series with an output of the first amplifier, and an output configured to be coupled to a load. The bandpass filter has a lower input impedance at an in-band center frequency than at out-of-band frequencies, and the first amplifier is configured to receive a pulse width modulated waveform filtered according to a first transfer function that attenuates sidebands of the pulse width modulated waveform.
摘要翻译： 根据实施例，系统包括第一放大器和第一带通滤波器，其具有与第一放大器的输出串联耦合的输入，以及被配置为耦合到负载的输出。 带通滤波器在带内中心频率处具有比在带外频率下更低的输入阻抗，并且第一放大器被配置为接收根据第一传递函数滤波的脉宽调制波形，该第一传递函数衰减脉冲的边带 宽调制波形。
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公开(公告)号：US20140062604A1
公开(公告)日：2014-03-06
申请号：US13603313
申请日：2012-09-04
CPC分类号： H03F3/217 , H03F1/0205 , H03F3/2171 , H03F3/2176 , H03F3/245
摘要： In accordance with an embodiment, a system includes a first amplifier and a first bandpass filter having an input coupled in series with an output of the first amplifier, and an output configured to be coupled to a load. The bandpass filter has a lower input impedance at an in-band center frequency than at out-of-band frequencies, and the first amplifier is configured to receive a pulse width modulated waveform filtered according to a first transfer function that attenuates sidebands of the pulse width modulated waveform.
摘要翻译： 根据实施例，系统包括第一放大器和第一带通滤波器，其具有与第一放大器的输出串联耦合的输入，以及被配置为耦合到负载的输出。 带通滤波器在带内中心频率处具有比在带外频率下更低的输入阻抗，并且第一放大器被配置为接收根据第一传递函数滤波的脉宽调制波形，该第一传递函数衰减脉冲的边带 宽调制波形。
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公开(公告)号：US20130235923A1
公开(公告)日：2013-09-12
申请号：US13417000
申请日：2012-03-09
CPC分类号： H03K7/08 , H04L25/4902
摘要： A pulse-width modulator (PWM) includes a plurality of comparators for comparing an input signal with a plurality of reference signals and for providing a plurality of corresponding comparison signals. The pulse-width modulator also includes a combinational logic for receiving the plurality of comparison signals and for generating a plurality of binary pulse-width modulation signals on the basis of the plurality of comparison signals. At most only a currently selected binary pulse-width modulation signal of the binary pulse-width modulation signals is at a first signal level at a time. The currently selected binary pulse-width modulation signal is associated to a specific reference signal of the plurality of reference signals which is currently closest to the input signal among the plurality of reference signals in terms of a given amplitude relation between the plurality of reference signals and the input signal.
摘要翻译： 脉冲宽度调制器（PWM）包括多个比较器，用于将输入信号与多个参考信号进行比较，并用于提供多个对应的比较信号。 脉冲宽度调制器还包括用于接收多个比较信号的组合逻辑，并且用于基于多个比较信号产生多个二进制脉冲宽度调制信号。 二进制脉冲宽度调制信号中最多只有当前选择的二进制脉宽调制信号一次处于第一信号电平。 当前选择的二进制脉冲宽度调制信号与多个参考信号中当前最接近多个参考信号中的输入信号的特定参考信号相关联，就多个参考信号和 输入信号。
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5.发明授权System and method for generating a radio frequency pulse-width modulated signal 有权用于产生射频脉宽调制信号的系统和方法公开(公告)号：US08971398B2
公开(公告)日：2015-03-03
申请号：US13236385
申请日：2011-09-19
CPC分类号： H03F3/2178 , H03F1/0277 , H03F3/602
摘要： In an embodiment, a method of producing a multi-level RF signal includes producing plurality of pulse-width modulated signals based on an input signal. The method further includes driving a corresponding plurality of parallel amplifiers with the plurality of pulse-width modulated signals by setting a parallel amplifier to have a first output impedance when a corresponding pulse-width modulated signal is in an active state and setting the parallel amplifier to have a second output impedance when the corresponding pulse-width is in an inactive state. The method also includes phase shifting the outputs of the plurality of parallel amplifiers, wherein phase shifting transforms the second output impedance into a third impedance that is higher than the second output impedance, and combining the phase shifted outputs.
摘要翻译： 在一个实施例中，产生多电平RF信号的方法包括基于输入信号产生多个脉冲宽度调制信号。 该方法还包括通过将并行放大器设置为具有第一输出阻抗来驱动具有多个脉冲宽度调制信号的相应多个并行放大器，当相应的脉宽调制信号处于活动状态并将并行放大器设置为 当相应的脉冲宽度处于非活动状态时，具有第二输出阻抗。 该方法还包括相移多个并行放大器的输出，其中相移将第二输出阻抗转换成高于第二输出阻抗的第三阻抗，并组合相移输出。
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公开(公告)号：US20140002192A1
公开(公告)日：2014-01-02
申请号：US13538309
申请日：2012-06-29
CPC分类号： H03F1/0277 , H03F1/223 , H03F1/56 , H03F3/211 , H03F2200/09 , H03F2200/105 , H03F2200/171 , H03F2200/222 , H03F2200/387 , H03F2200/391 , H03F2200/465 , H03F2200/78 , H03F2203/21142
摘要： In accordance with an embodiment, a system includes a first transistor and a second transistor. The first transistor has a first input node coupled to a first signal input, a first output node coupled to a first common node, and a first reference node coupled to a first reference voltage, and the second transistor has a second input node coupled to second signal input, a second output node coupled to an output of the system, and a second reference node coupled to the first common node. The system further includes a first switch switchably coupling the first common node to a second reference voltage.
摘要翻译： 根据实施例，系统包括第一晶体管和第二晶体管。 第一晶体管具有耦合到第一信号输入的第一输入节点，耦合到第一公共节点的第一输出节点和耦合到第一参考电压的第一参考节点，而第二晶体管具有耦合到第二输入节点的第二输入节点 信号输入，耦合到所述系统的输出的第二输出节点以及耦合到所述第一公共节点的第二参考节点。 该系统还包括可切换地将第一公共节点耦合到第二参考电压的第一开关。
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公开(公告)号：US08754712B2
公开(公告)日：2014-06-17
申请号：US13538309
申请日：2012-06-29
IPC分类号： H03F1/22
CPC分类号： H03F1/0277 , H03F1/223 , H03F1/56 , H03F3/211 , H03F2200/09 , H03F2200/105 , H03F2200/171 , H03F2200/222 , H03F2200/387 , H03F2200/391 , H03F2200/465 , H03F2200/78 , H03F2203/21142
摘要： In accordance with an embodiment, a system includes a first transistor and a second transistor. The first transistor has a first input node coupled to a first signal input, a first output node coupled to a first common node, and a first reference node coupled to a first reference voltage, and the second transistor has a second input node coupled to second signal input, a second output node coupled to an output of the system, and a second reference node coupled to the first common node. The system further includes a first switch switchably coupling the first common node to a second reference voltage.
摘要翻译： 根据实施例，系统包括第一晶体管和第二晶体管。 第一晶体管具有耦合到第一信号输入的第一输入节点，耦合到第一公共节点的第一输出节点和耦合到第一参考电压的第一参考节点，而第二晶体管具有耦合到第二输入节点的第二输入节点 信号输入，耦合到所述系统的输出的第二输出节点以及耦合到所述第一公共节点的第二参考节点。 该系统还包括可切换地将第一公共节点耦合到第二参考电压的第一开关。
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8.发明申请System and Method for Generating a Radio Frequency Pulse-width Modulated Signal 有权用于产生射频脉宽调制信号的系统和方法公开(公告)号：US20130070836A1
公开(公告)日：2013-03-21
申请号：US13236385
申请日：2011-09-19
CPC分类号： H03F3/2178 , H03F1/0277 , H03F3/602
摘要： In an embodiment, a method of producing a multi-level RF signal includes producing plurality of pulse-width modulated signals based on an input signal. The method further includes driving a corresponding plurality of parallel amplifiers with the plurality of pulse-width modulated signals by setting a parallel amplifier to have a first output impedance when a corresponding pulse-width modulated signal is in an active state and setting the parallel amplifier to have a second output impedance when the corresponding pulse-width is in an inactive state. The method also includes phase shifting the outputs of the plurality of parallel amplifiers, wherein phase shifting transforms the second output impedance into a third impedance that is higher than the second output impedance, and combining the phase shifted outputs.
摘要翻译： 在一个实施例中，产生多电平RF信号的方法包括基于输入信号产生多个脉冲宽度调制信号。 该方法还包括通过将并行放大器设置为具有第一输出阻抗来驱动具有多个脉冲宽度调制信号的相应多个并行放大器，当对应的脉宽调制信号处于活动状态并将并行放大器设置为 当相应的脉冲宽度处于非活动状态时，具有第二输出阻抗。 该方法还包括相移多个并行放大器的输出，其中相移将第二输出阻抗转换成高于第二输出阻抗的第三阻抗，并组合相移输出。
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公开(公告)号：US4238754A
公开(公告)日：1980-12-09
申请号：US927863
申请日：1978-07-25
申请人： Christian Schuberth , Istvan Nemeth , Lothar Guck
发明人： Christian Schuberth , Istvan Nemeth , Lothar Guck
CPC分类号： H01C10/32
摘要： A variable resistor of modular design having a hub-flange and at least one housing frame having a central opening. A spring carrier provided with a contact spring is arranged in the central opening of the housing and is rotatable by means of an actuation shaft. A carrier plate, on which the resistor course and the collector course are mounted, is positioned adjacent the spring carrier such that the contact spring provides an electrical connection between the resistance and the collector courses. The housing frame has a pot-shaped front side for receiving a rotor. Means is provided for arresting rotation of the rotor to within predetermined angular limits, and the rotor has a contoured rim for engaging a click-stop device.
摘要翻译： 一种模块化设计的可变电阻器，其具有轮毂凸缘和至少一个具有中心开口的壳体框架。 设置有接触弹簧的弹簧载架布置在壳体的中心开口中并且可通过致动轴旋转。 安装有电阻线圈和集电器线圈的载板位于弹簧支架附近，使得接触弹簧在电阻和收集器横列之间提供电连接。 壳体框架具有用于容纳转子的盆形前侧。 提供了用于将转子的旋转阻止在预定角度范围内的装置，并且转子具有用于接合点击停止装置的轮廓轮缘。
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公开(公告)号：US4296292A
公开(公告)日：1981-10-20
申请号：US94891
申请日：1979-11-16
摘要： A variable electromechanical device, such as a rotary potentiometer, incls a housing with a sleeve having a bore through which an actuation shaft extends. The shaft is provided with an annular groove. A portion of the sleeve is displaced by stamping so that it extends into the annular groove of the shaft to prevent axial movement of the latter. A projection formed on the shaft within the annular groove cooperates with the displaced portion of the sleeve for limiting the rotation of the shaft. A lubricating and braking liquid of high viscosity is filled in the groove, and one or more passages are formed on the projection so that the liquid can pass from one side of the projection to the other side thereof when the shaft is rotated.
摘要翻译： 诸如旋转电位计的可变机电装置包括具有套筒的壳体，所述套筒具有致动轴延伸穿过的孔。 轴设有环形槽。 套筒的一部分通过冲压而移位，使其延伸到轴的环形槽中，以防止轴的轴向移动。 形成在该环内的轴上的突起与套筒的移位部分配合，以限制该轴的转动。 在该凹槽中填充有高粘度的润滑制动液，在突出部上形成有一个或多个通道，使得当轴旋转时，液体可以从突出部的一侧通过到另一侧。
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