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    • 3. 发明申请
    • Integrated preamplifier circuit for detecting a signal current from a photodiode
    • 用于检测来自光电二极管的信号电流的集成前置放大器电路
    • US20050116778A1
    • 2005-06-02
    • US10975686
    • 2004-10-27
    • Martin BraierKarlheinz MuthGerd Schuppener
    • Martin BraierKarlheinz MuthGerd Schuppener
    • H03F3/08H03F3/45
    • H03F3/087
    • An integrated preamplifier circuit for detecting a signal current from a photodiode and converting the signal current into an output voltage is provided. The circuit includes a signal amplifier and a dummy amplifier, the dummy amplifier being matched to the signal amplifier. Each of these amplifiers includes an input transistor and an output transistor, the input transistor of the signal amplifier receiving an input signal derived from the signal current and the input transistor of the dummy amplifier receiving no input signal. The signal and dummy amplifiers provide the desired differential output signal. The input transistors of the signal and dummy amplifiers each have a biasing current source forced to follow a reference current source implemented within the integrated circuit.
    • 提供一种用于检测来自光电二极管的信号电流并将信号电流转换为输出电压的集成前置放大器电路。 电路包括信号放大器和虚拟放大器,虚拟放大器与信号放大器匹配。 这些放大器中的每一个包括输入晶体管和输出晶体管,信号放大器的输入晶体管接收从信号电流导出的输入信号,并且虚拟放大器的输入晶体管不接收输入信号。 信号和虚拟放大器提供所需的差分输出信号。 信号和虚拟放大器的输入晶体管各自具有被迫遵循在集成电路内实现的参考电流源的偏置电流源。
    • 4. 发明申请
    • TRANSIMPEDANCE AMPLIFIER WITH ADJUSTABLE OUTPUT AMPLITUDE AND WIDE INPUT DYNAMIC-RANGE
    • 带可调输出功率放大器和宽输入动态范围的放大放大器
    • US20050052231A1
    • 2005-03-10
    • US10657528
    • 2003-09-08
    • Lothar SchmidtKarlheinz MuthMartin Braier
    • Lothar SchmidtKarlheinz MuthMartin Braier
    • H03F1/34H03F3/08H03F1/36
    • H03F1/34H03F3/08
    • A transimpedance amplifier circuit comprising transistors, a constant current source, a load resistor, and the feedback resistor with a shunt circuitry consisting of the additional transistors, which are driven for example with electrically adjustable voltage sources. In a bipolar npn implementation the amplifier stage consists of a common emitter input transistor Q1, a transistor Q2 with its base connected to the collector of the first transistor operates as an emitter follower. A resistor RF connected between the emitter of said second transistor and the base of said first transistor provides a voltage controlled current feedback from the amplifier output to its input. The output voltage VOUT is generated at the emitter node of said second transistor. A shunt circuitry consists of a third and a fourth transistor Q3 and Q4 connected in shunt across resistor RF. In an embodiment, the base node voltages of the transistors Q3 and Q4 are adjusted by control voltage sources. By means of an appropriate implementation of these voltage sources the maximum and minimum limits of the output voltage VOUT is defined, which can easily be implemented with arbitrary temperature or supply voltage dependency.
    • 跨阻放大器电路包括晶体管,恒流源,负载电阻器和反馈电阻器,其具有由附加晶体管组成的分流电路,所述附加晶体管例如用电可调电压源驱动。 在双极性npn实现中,放大器级由公共发射极输入晶体管Q1组成,其基极连接到第一晶体管的集电极的晶体管Q2用作射极跟随器。 连接在所述第二晶体管的发射极和所述第一晶体管的基极之间的电阻器RF提供从放大器输出到其输入端的压控电流反馈。 在所述第二晶体管的发射极节点产生输出电压VOUT。 并联电路由在电阻器RF上分流连接的第三和第四晶体管Q3和Q4组成。 在一个实施例中,晶体管Q3和Q4的基极节点电压由控制电压源调节。 通过这些电压源的适当实现,定义了输出电压VOUT的最大和最小极限,这可以容易地以任意的温度或电源电压依赖性来实现。
    • 5. 发明授权
    • Integrated preamplifier circuit for detecting a signal current from a photodiode
    • 用于检测来自光电二极管的信号电流的集成前置放大器电路
    • US07233209B2
    • 2007-06-19
    • US10975686
    • 2004-10-27
    • Martin BraierKarlheinz MuthGerd Schuppener
    • Martin BraierKarlheinz MuthGerd Schuppener
    • H03F3/45H03F3/08
    • H03F3/087
    • An integrated preamplifier circuit for detecting a signal current from a photodiode and converting the signal current into an output voltage is provided. The circuit includes a signal amplifier and a dummy amplifier, the dummy amplifier being matched to the signal amplifier. Each of these amplifiers includes an input transistor and an output transistor, the input transistor of the signal amplifier receiving an input signal derived from the signal current and the input transistor of the dummy amplifier receiving no input signal. The signal and dummy amplifiers provide the desired differential output signal. The input transistors of the signal and dummy amplifiers each have a biasing current source forced to follow a reference current source implemented within the integrated circuit.
    • 提供一种用于检测来自光电二极管的信号电流并将信号电流转换为输出电压的集成前置放大器电路。 电路包括信号放大器和虚拟放大器,虚拟放大器与信号放大器匹配。 这些放大器中的每一个包括输入晶体管和输出晶体管,信号放大器的输入晶体管接收从信号电流导出的输入信号,并且虚拟放大器的输入晶体管不接收输入信号。 信号和虚拟放大器提供所需的差分输出信号。 信号和虚拟放大器的输入晶体管各自具有强制遵循在集成电路内实现的参考电流源的偏置电流源。
    • 6. 发明授权
    • Transimpedance amplifier with adjustable output amplitude and wide input dynamic-range
    • 具有可调输出幅度和宽输入动态范围的互阻放大器
    • US06864751B1
    • 2005-03-08
    • US10657528
    • 2003-09-08
    • Lothar SchmidtKarlheinz MuthMartin Braier
    • Lothar SchmidtKarlheinz MuthMartin Braier
    • H03F1/34H03F3/08H03F3/04
    • H03F1/34H03F3/08
    • A transimpedance amplifier circuit comprising transistors, a constant current source, a load resistor, and the feedback resistor with a shunt circuitry consisting of the additional transistors, which are driven for example with electrically adjustable voltage sources. In a bipolar npn implementation the amplifier stage consists of a common emitter input transistor Q1, a transistor Q2 with its base connected to the collector of the first transistor operates as an emitter follower. A resistor RF connected between the emitter of said second transistor and the base of said first transistor provides a voltage controlled current feedback from the amplifier output to its input. The output voltage VOUT is generated at the emitter node of said second transistor. A shunt circuitry consists of a third and a fourth transistor Q3 and Q4 connected in shunt across resistor RF. In an embodiment, the base node voltages of the transistors Q3 and Q4 are adjusted by control voltage sources. By means of an appropriate implementation of these voltage sources the maximum and minimum limits of the output voltage VOUT is defined, which can easily be implemented with arbitrary temperature or supply voltage dependency.
    • 跨阻放大器电路包括晶体管,恒流源,负载电阻器和反馈电阻器,其具有由附加晶体管组成的分流电路,所述附加晶体管例如用电可调电压源驱动。 在双极性npn实现中,放大器级由公共发射极输入晶体管Q1组成,其基极连接到第一晶体管的集电极的晶体管Q2用作射极跟随器。 连接在所述第二晶体管的发射极和所述第一晶体管的基极之间的电阻器RF提供从放大器输出到其输入端的压控电流反馈。 在所述第二晶体管的发射极节点产生输出电压VOUT。 并联电路由在电阻器RF上分流连接的第三和第四晶体管Q3和Q4组成。 在一个实施例中,晶体管Q3和Q4的基极节点电压由控制电压源调节。 通过这些电压源的适当实现,定义了输出电压VOUT的最大和最小极限,这可以容易地以任意的温度或电源电压依赖性来实现。
    • 7. 发明授权
    • CMOS LC-tank oscillator
    • CMOS液晶振荡器
    • US07256660B2
    • 2007-08-14
    • US11132908
    • 2005-05-19
    • Frank GelhausenKarlheinz Muth
    • Frank GelhausenKarlheinz Muth
    • H03B5/00
    • H03B5/1228H03B5/1215H03B5/1243
    • A CMOS LC-tank oscillator includes a pair of symmetric inductors and a differential pair of transistors. The inductors have a first one of their terminals interconnected at a supply node to which a voltage supply is applied through a supply resistor and a second terminal connected to the drain of a respective one of the transistors. The transistors have their sources interconnected at a tail node which is connected to ground through a tail resistor. A current control loop controls a core current between the supply and tail nodes so as to keep a voltage drop across the tail resistor at a level determined by a reference voltage. The current control loop keeps the core current between the supply and tail nodes at the required level so that a resistor may replace the upstream supply voltage regulator and another resistor may replace the downstream bias regulator. Consequently, sources of noise injected into the LC-tank type oscillator are eliminated.
    • 一个CMOS LC-槽振荡器包括一对对称电感和一对差分晶体管。 电感器具有在供电节点互连的第一个端子,通过电源电阻施加电压源,连接到相应的一个晶体管的漏极的第二端子。 晶体管的源极在通过尾电阻连接到地的尾部节点处相互连接。 电流控制回路控制供电节点和尾节点之间的磁芯电流,以便在由参考电压确定的电平上保持尾电阻上的电压降。 电流控制回路将电源和尾节点之间的磁芯电流保持在所需电平,使得电阻器可以替代上游电源电压调节器,另一个电阻器可以替代下游偏置调节器。 因此,消除了注入到LC槽型振荡器中的噪声源。
    • 8. 发明申请
    • CMOS LC-tank oscillator
    • CMOS液晶振荡器
    • US20060132253A1
    • 2006-06-22
    • US11132908
    • 2005-05-19
    • Frank GelhausenKarlheinz Muth
    • Frank GelhausenKarlheinz Muth
    • H03B5/08
    • H03B5/1228H03B5/1215H03B5/1243
    • A CMOS LC-tank oscillator includes a pair of symmetric inductors and a differential pair of transistors. The inductors have a first one of their terminals interconnected at a supply node to which a voltage supply is applied through a supply resistor and a second terminal connected to the drain of a respective one of the transistors. The transistors have their sources interconnected at a tail node which is connected to ground through a tail resistor. A current control loop controls a core current between the supply and tail nodes so as to keep a voltage drop across the tail resistor at a level determined by a reference voltage. The current control loop keeps the core current between the supply and tail nodes at the required level so that a resistor may replace the upstream supply voltage regulator and another resistor may replace the downstream bias regulator. Consequently, sources of noise injected into the LC-tank type oscillator are eliminated.
    • 一个CMOS LC-槽振荡器包括一对对称电感和一对差分晶体管。 电感器具有在供电节点互连的第一个端子,通过电源电阻施加电压源,和连接到相应的一个晶体管的漏极的第二端子。 晶体管的源极在通过尾电阻连接到地的尾部节点处相互连接。 电流控制回路控制供电节点和尾节点之间的磁芯电流,以便在由参考电压确定的电平上保持尾电阻上的电压降。 电流控制回路将电源和尾节点之间的磁芯电流保持在所需电平,使得电阻器可以替代上游电源电压调节器,另一个电阻器可以替代下游偏置调节器。 因此,消除了注入到LC槽型振荡器中的噪声源。