-
1.发明申请公开(公告)号：US20160072485A1
公开(公告)日：2016-03-10
申请号：US14928830
申请日：2015-10-30
CPC分类号： H03K5/01 , H03F1/0255 , H03F3/19 , H03F3/21 , H03F2200/102 , H03F2200/451 , H03G3/007 , H03G3/3042 , H03K6/04 , H03K17/60
摘要： A wave shaping circuit reduces slope magnitudes during increasing and decreasing voltage transitions. The wave shaping circuit includes a first switch that receives an input voltage having at least two voltage values where an input voltage transition between the at least two voltage values has a first slope magnitude; an inductor connected in series with the first switch; a second switch connected in a parallel arrangement with the first switch and the inductor; and a capacitor having a first end connected between the inductor and an output port and a second end connected to ground. When the input voltage begins the input voltage transition to a higher voltage value, the first switch turns on and the second switch turns off, such that the inductor limits current flow from the input voltage, decreasing a second slope magnitude of an output voltage transition to less than the first slope magnitude.
摘要翻译： 波形整形电路在增加和减小电压转换期间减小斜率幅度。 波形整形电路包括第一开关，其接收具有至少两个电压值的输入电压，其中所述至少两个电压值之间的输入电压转换具有第一斜率; 与第一开关串联连接的电感器; 与第一开关和电感器并联布置的第二开关; 以及电容器，其具有连接在电感器和输出端口之间的第一端和连接到地的第二端。 当输入电压开始输入电压转换到更高的电压值时，第一开关导通，第二开关断开，使得电感器限制来自输入电压的电流流动，将输出电压转换的第二斜率幅度减小到 小于第一坡度幅度。
-
公开(公告)号：US09088257B2
公开(公告)日：2015-07-21
申请号：US13834953
申请日：2013-03-15
CPC分类号： H03F1/0205 , H03F1/0255 , H03F3/19 , H03F3/21 , H03F3/217 , H03F2200/102 , H03F2200/451 , H03G1/0017 , H03G1/0094 , H03G3/004 , H03G3/20 , H03G3/3042
摘要： A device for controlling operation of a power amplifier includes a detector, a reference signal generator and a controller. The detector is configured to detect a voltage level of an output signal of the power amplifier with respect to a predetermined boost threshold and to generate a corresponding detection signal and a reference signal. The controller is configured to provide a supply voltage to an output transistor of the power amplifier based on a comparison of the detection signal and the reference signal, the supply voltage being a no boost voltage, which is substantially the same as a supply voltage, when the comparison indicates that the voltage level is within the predetermined boost threshold, and the supply voltage being one of multiple boost voltages when the detection signal indicates that the voltage level is beyond the predetermined boost threshold. The controller generates the boost voltages by boosting the supply voltage.
摘要翻译： 用于控制功率放大器的操作的装置包括检测器，参考信号发生器和控制器。 检测器被配置为相对于预定升压阈值检测功率放大器的输出信号的电压电平并产生相应的检测信号和参考信号。 所述控制器被配置为基于所述检测信号和所述参考信号的比较来提供所述功率放大器的输出晶体管的电源电压，所述电源电压是与供电电压基本相同的非升压电压， 比较表示当检测信号指示电压电平超过预定升压阈值时，电压电平处于预定升压阈值内，并且电源电压是多个升压电压之一。 控制器通过提高电源电压来产生升压电压。
-
公开(公告)号：US20160056813A1
公开(公告)日：2016-02-25
申请号：US14928882
申请日：2015-10-30
CPC分类号： H03K17/602 , H03F1/0255 , H03F3/19 , H03F3/193 , H03F3/21 , H03F2200/102 , H03F2200/451 , H03G1/0094 , H03G3/004 , H03G3/007 , H03G3/3042
摘要： A displacement current compensation circuit is provided for diverting a displacement current, which flows between a collector and a base of a transistor when a supply voltage for the transistor transitions to a different value. The displacement current compensation circuit includes an inverting amplifier connected to the voltage source, the voltage source being configured to provide the supply voltage to the collector of the transistor; and a coupling network configured to couple an output of the inverting amplifier to the base of the transistor. The inverting amplifier is configured to divert the displacement current from the base of the transistor through the coupling network into the output of the inverting amplifier, thereby preventing the displacement current from entering the base of the transistor.
摘要翻译： 位移电流补偿电路被提供用于在晶体管的电源电压转变到不同的值时转移在晶体管的集电极和基极之间流动的位移电流。 位移电流补偿电路包括连接到电压源的反相放大器，电压源被配置为向晶体管的集电极提供电源电压; 以及耦合网络，被配置为将反相放大器的输出耦合到晶体管的基极。 反相放大器被配置为将来自晶体管的基极的位移电流通过耦合网络转移到反相放大器的输出端，从而防止位移电流进入晶体管的基极。
-
公开(公告)号：US20140266456A1
公开(公告)日：2014-09-18
申请号：US13834953
申请日：2013-03-15
IPC分类号： H03G1/00
CPC分类号： H03F1/0205 , H03F1/0255 , H03F3/19 , H03F3/21 , H03F3/217 , H03F2200/102 , H03F2200/451 , H03G1/0017 , H03G1/0094 , H03G3/004 , H03G3/20 , H03G3/3042
摘要： A device for controlling operation of a power amplifier includes a detector, a reference signal generator and a controller. The detector is configured to detect a voltage level of an output signal of the power amplifier with respect to a predetermined boost threshold and to generate a corresponding detection signal and a reference signal. The controller is configured to provide a supply voltage to an output transistor of the power amplifier based on a comparison of the detection signal and the reference signal, the supply voltage being a no boost voltage, which is substantially the same as a supply voltage, when the comparison indicates that the voltage level is within the predetermined boost threshold, and the supply voltage being one of multiple boost voltages when the detection signal indicates that the voltage level is beyond the predetermined boost threshold. The controller generates the boost voltages by boosting the supply voltage.
摘要翻译： 用于控制功率放大器的操作的装置包括检测器，参考信号发生器和控制器。 检测器被配置为相对于预定升压阈值检测功率放大器的输出信号的电压电平并产生相应的检测信号和参考信号。 控制器被配置为基于检测信号和参考信号的比较来向功率放大器的输出晶体管提供电源电压，电源电压为非升压电压，其与供电电压基本相同，当 比较表示当检测信号指示电压电平超过预定升压阈值时，电压电平处于预定升压阈值内，并且电源电压是多个升压电压之一。 控制器通过提高电源电压来产生升压电压。
-
5.发明授权公开(公告)号：US09825616B2
公开(公告)日：2017-11-21
申请号：US14928830
申请日：2015-10-30
IPC分类号： H03F1/14 , H03K5/01 , H03K17/60 , H03F3/19 , H03G3/30 , H03F1/02 , H03F3/21 , H03K6/04 , H03G3/00
CPC分类号： H03K5/01 , H03F1/0255 , H03F3/19 , H03F3/21 , H03F2200/102 , H03F2200/451 , H03G3/007 , H03G3/3042 , H03K6/04 , H03K17/60
摘要： A wave shaping circuit reduces slope magnitudes during increasing and decreasing voltage transitions. The wave shaping circuit includes a first switch that receives an input voltage having at least two voltage values where an input voltage transition between the at least two voltage values has a first slope magnitude; an inductor connected in series with the first switch; a second switch connected in a parallel arrangement with the first switch and the inductor; and a capacitor having a first end connected between the inductor and an output port and a second end connected to ground. When the input voltage begins the input voltage transition to a higher voltage value, the first switch turns on and the second switch turns off, such that the inductor limits current flow from the input voltage, decreasing a second slope magnitude of an output voltage transition to less than the first slope magnitude.
-
公开(公告)号：US09385659B2
公开(公告)日：2016-07-05
申请号：US14741970
申请日：2015-06-17
CPC分类号： H03F1/0205 , H03F1/0255 , H03F3/19 , H03F3/21 , H03F3/217 , H03F2200/102 , H03F2200/451 , H03G1/0017 , H03G1/0094 , H03G3/004 , H03G3/20 , H03G3/3042
摘要： A control device provides a supply voltage to an output transistor of a power amplifier. The control device includes a detector encoder, a switch sequencer and a power switch. The detector encoder receives a detection signal indicating a negative peak voltage level of an output signal of the power amplifier, receives a reference signal indicating a critical voltage of the detection signal at which the negative peak voltage level of the output transistor is deemed to be out of voltage with reference to saturation voltage of the output transistor, compares the detection and reference signals, and outputs Boost Request and Recovery Request signals in response. The switch sequencer translates the Boost Request and Recovery Request signals into multiple control bits. The power switch coordinates switching among a no boost voltage and multiple boost voltages based on the control bits, and outputs one of these voltages as the supply voltage.
摘要翻译： 控制装置向功率放大器的输出晶体管提供电源电压。 控制装置包括检测器编码器，开关定序器和电源开关。 检测器编码器接收表示功率放大器的输出信号的负峰值电压电平的检测信号，接收表示输出晶体管的负峰值电压被认为为输出的检测信号的临界电压的参考信号 参考输出晶体管的饱和电压，比较检测和参考信号，并响应输出升压请求和恢复请求信号。 开关顺序器将升压请求和恢复请求信号转换为多个控制位。 功率开关基于控制位来协调在非升压电压和多个升压电压之间切换，并将这些电压中的一个作为电源电压输出。
-
公开(公告)号：US20150311866A1
公开(公告)日：2015-10-29
申请号：US14741970
申请日：2015-06-17
CPC分类号： H03F1/0205 , H03F1/0255 , H03F3/19 , H03F3/21 , H03F3/217 , H03F2200/102 , H03F2200/451 , H03G1/0017 , H03G1/0094 , H03G3/004 , H03G3/20 , H03G3/3042
摘要： A control device provides a supply voltage to an output transistor of a power amplifier. The control device includes a detector encoder, a switch sequencer and a power switch. The detector encoder receives a detection signal indicating a negative peak voltage level of an output signal of the power amplifier, receives a reference signal indicating a critical voltage of the detection signal at which the negative peak voltage level of the output transistor is deemed to be out of voltage with reference to saturation voltage of the output transistor, compares the detection and reference signals, and outputs Boost Request and Recovery Request signals in response. The switch sequencer translates the Boost Request and Recovery Request signals into multiple control bits. The power switch coordinates switching among a no boost voltage and multiple boost voltages based on the control bits, and outputs one of these voltages as the supply voltage.
摘要翻译： 控制装置向功率放大器的输出晶体管提供电源电压。 控制装置包括检测器编码器，开关定序器和电源开关。 检测器编码器接收表示功率放大器的输出信号的负峰值电压电平的检测信号，接收表示输出晶体管的负峰值电压被认为为输出的检测信号的临界电压的参考信号 参考输出晶体管的饱和电压，比较检测和参考信号，并响应输出升压请求和恢复请求信号。 开关顺序器将升压请求和恢复请求信号转换为多个控制位。 功率开关基于控制位来协调在非升压电压和多个升压电压之间切换，并将这些电压中的一个作为电源电压输出。
-
-
-
-
-
-
搜索结果
7 条记录 (耗时 0.023 秒)
