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1. 发明申请

US20040251968A1 Method and apparatus for providing a stable power output of power amplifiers, operating under unstable supply voltage conditions 失效
标题翻译：用于在不稳定电源条件下工作的功率放大器的稳定功率输出的方法和装置
公开(公告)号：US20040251968A1
公开(公告)日：2004-12-16
申请号：US10829857
申请日：2004-04-21
发明人： Israel Bar-David , Avner Elia , Alexander Veinblat
IPC分类号： H03F003/04
CPC分类号： H03F1/0222 , H03F1/30 , H03F3/189 , H03F2200/504
摘要： Method and circuit for stabilizing the output power of a power amplifier, operated with signals having a large peak-to-average ratio and fed by a DC power supply with fluctuating output voltage. An allowable fluctuating range for the voltage output from the DC power supply and a constant voltage level are determined. A controllable voltage enhancement circuitry that can output an enhancement voltage is provided. The input of the voltage enhancement circuitry and a first DC supply path are connected to the output of the DC power supply. The output of the voltage enhancement circuitry is connected to a second DC supply path. While the instantaneous value of the fluctuating output voltage is lower than the constant voltage level, the voltage enhancement circuitry generates an enhancement voltage that causes the sum of the voltages supplied through the first and the second supply paths, to be identical to the constant voltage level.
摘要翻译：用于稳定功率放大器的输出功率的方法和电路，用具有大的平均峰值比的信号进行操作，并由具有波动输出电压的直流电源馈送。确定从直流电源输出的电压和恒定电压电平的容许波动范围。提供可输出增强电压的可控电压增强电路。电压增强电路和第一直流电源路径的输入端连接到直流电源的输出端。电压增强电路的输出连接到第二DC供电路径。当波动输出电压的瞬时值低于恒定电压电平时，电压增强电路产生使得通过第一和第二供电路径提供的电压之和与恒定电压电平相等的增强电压。

2. 发明申请

US20040119538A1 Amplifier and method for canceling nonlinearity in amplifier 失效
标题翻译：用于消除放大器非线性的放大器和方法
公开(公告)号：US20040119538A1
公开(公告)日：2004-06-24
申请号：US10618507
申请日：2003-07-11
发明人： Yong-Sik Youn , Hyun-Kyu Yu , Mun-Yang Park
IPC分类号： H03F003/04
CPC分类号： H03F3/345 , H03F1/301 , H03F1/3205 , H03F3/04
摘要： An amplifier including an amplifier transistor that operates in an active region has main current flowing therethrough according to input voltage, and a linear transistor that is driven by offset positive-polarity input voltage to operate in a linear region and has auxiliary current flowing therethrough. The main current and auxiliary current are added to become output current. The offset positive-polarity voltage corresponds to the sum of AC component of the input voltage and an offset DC voltage. Here, a transistor stacked on the linear transistor is coupled to the amplifier transistor to secure the linear region operation of the linear transistor. The stacked transistor is driven by a voltage having polarity opposite to that of the input voltage.
摘要翻译：包括在有源区域中工作的放大器晶体管的放大器根据输入电压具有流过其中的主电流，以及由偏移正极性输入电压驱动以在线性区域中操作并具有辅助电流流过其中的线性晶体管。主电流和辅助电流相加，成为输出电流。偏移正极性电压对应于输入电压的交流分量和偏移直流电压之和。这里，堆叠在线性晶体管上的晶体管耦合到放大器晶体管，以确保线性晶体管的线性区域操作。堆叠晶体管由具有与输入电压的极性相反的极性的电压驱动。

3. 发明申请

US20040066235A1 Low voltage input current mirror circuit and method 有权
标题翻译：低压输入电流镜电路及方法
公开(公告)号：US20040066235A1
公开(公告)日：2004-04-08
申请号：US10679269
申请日：2003-10-07
申请人： Broadcom Corporation
发明人： Lawrence M. Burns
IPC分类号： H03F003/04
CPC分类号： H03G3/001 , G05F3/242 , G05F3/262 , H03G3/3042
摘要： A low voltage current mirror circuit (also referred to as a bias circuit) for establishing a plurality of bias voltages from an input current supplied to an input terminal of the circuit includes an input stage, a current stage connected to the input stage, a feedback stage connected to the current stage, a reference bias stage connected to the feedback stage and the current stage. The circuit establishes first and second bias voltages suitable for biasing current sources of a first type, and third and fourth bias voltages suitable for biasing current sources of a second type complementary to the first type. The bias voltages track the input current over variations in at least one of process, temperature and power supply voltage.
摘要翻译：用于从提供给电路的输入端的输入电流建立多个偏置电压的低电压电流镜电路（也称为偏置电路）包括输入级，连接到输入级的电流级，反馈连接到当前阶段的阶段，连接到反馈级和当前阶段的参考偏置级。该电路建立适于偏置第一类型的电流源的第一和第二偏置电压，以及适于偏置与第一类型互补的第二类型的电流源的第三和第四偏置电压。偏置电压跟踪输入电流超过过程，温度和电源电压中的至少一个的变化。

4. 发明申请

US20030201831A1 Low quiescent power class AB current mirror circuit 有权
公开(公告)号：US20030201831A1
公开(公告)日：2003-10-30
申请号：US10452306
申请日：2003-06-02
发明人： David Hall Whitney , Chau Cuong Tran
IPC分类号： H03F003/04
CPC分类号： H03F3/3432
摘要： A low quiescent power class AB current mirror circuit includes a first input transistor for receiving an input current and a second output transistor for providing an output current; the first and second transistors having bases connected together; and a first current supply for sinking current from the bases in response to a decrease in input current to lower the quiescent point of the transistors.

5. 发明申请

US20030141935A1 High speed differential to single-ended converter 有权
标题翻译：高速差分至单端转换器
公开(公告)号：US20030141935A1
公开(公告)日：2003-07-31
申请号：US10115179
申请日：2002-04-02
发明人： Yi-Huei Chen , Po-Chiun Huang
IPC分类号： H03F003/04
CPC分类号： H03F3/45206
摘要： A differential to single-ended converter, which is composed of a transconductance amplifier, a current mirror and buffer circuit and a transimpedance stage, is disclosed. A differential voltage signal is provided to the inputs of the transconductance amplifier and converted to a differential current signal. The current mirror and buffer circuit serves as a differential to single-ended current conveyer and isolates the transconductance stage and the following transimpedance stage. Finally, the single-ended current signal is provided to the input of the transimpedance stage and converted to a single-ended current signal.
摘要翻译：公开了一种由跨导放大器，电流镜和缓冲电路以及跨导级组成的差分至单端转换器。差分电压信号被提供给跨导放大器的输入并转换成差分电流信号。电流镜和缓冲电路用作差分到单端电流输送机，并隔离跨导级和下一级跨阻级。最后，将单端电流信号提供给跨阻级的输入，并转换为单端电流信号。

6. 发明申请

US20030080816A1 Zero-overhead class G amplifier with threshold detection 有权
公开(公告)号：US20030080816A1
公开(公告)日：2003-05-01
申请号：US10001330
申请日：2001-10-31
发明人： James Donald Quarfoot , Marco Corsi , Richard Knight Hester , Kenneth George Maclean
IPC分类号： H03F003/04
CPC分类号： H03F1/025
摘要： The present invention provides an apparatus and method for operating driver amplifier (20) of a line driver circuit (10) from a lower set of power supply voltages, and from a higher set of voltages only when the amplitude of the signal (12) being transmitted by the line driver (20) requires it as determined by a comparator (18). Advantageously, this reduces the power dissipation in the line driver (10) by operating the line amplifier (20) the majority of the time from the lower supply voltage. A delay circuit (14) delays the signal to be amplified sufficient to allow the transitioning of the power supply voltages provided to the amplifier hysteresis of this power supply voltage switching may also be used to further reduce power dissipation.

7. 发明申请

US20030067353A1 Low voltage input current mirror circuit and method 有权
公开(公告)号：US20030067353A1
公开(公告)日：2003-04-10
申请号：US10288418
申请日：2002-11-06
发明人： Lawrence M. Burns
IPC分类号： H03F003/04
CPC分类号： H03G3/001 , G05F3/242 , G05F3/262 , H03G3/3042
摘要： A low voltage current mirror circuit (also referred to as a bias circuit) for establishing a plurality of bias voltages from an input current supplied to an input terminal of the circuit includes an input stage, a current stage connected to the input stage, a feedback stage connected to the current stage, a reference bias stage connected to the feedback stage and the current stage. The circuit establishes first and second bias voltages suitable for biasing current sources of a first type, and third and fourth bias voltages suitable for biasing current sources of a second type complementary to the first type. The bias voltages track the input current over variations in at least one of process, temperature and power supply voltage.

8. 发明申请

US20030058046A1 Data receiver and method for receiving data using folded differential voltage sampler 失效
标题翻译：数据接收器和使用折叠差分电压采样器接收数据的方法
公开(公告)号：US20030058046A1
公开(公告)日：2003-03-27
申请号：US10205646
申请日：2002-07-24
申请人： Samsung Electronics Co., Ltd.
发明人： Byong-Mo Moon
IPC分类号： H03F003/04
CPC分类号： H03K5/2481 , H03K5/249
摘要： A data receiver that is capable of precisely detecting data at high speed even at a high frequency after receiving differential reference signals and data in synchronization with a clock signal, and a method for receiving data, are provided. The receiver includes an amplifier which compares differential reference signals with input data and outputs first differential reference signals based on the results of the comparison; and a folded differential voltage sensor which amplifies the difference between the first differential signals in synchronization with a clock signal and detects the input data.
摘要翻译：提供了能够在接收到与时钟信号同步的差分参考信号和数据之后甚至以高频精确地检测数据的数据接收器，以及用于接收数据的方法。该接收机包括：一个放大器，用于将差分参考信号与输入数据进行比较，并根据比较结果输出第一差分参考信号; 以及折叠的差分电压传感器，其与时钟信号同步地放大第一差分信号之间的差异，并检测输入数据。

9. 发明申请

US20020135424A1 Current mirror circuit and analog-digital converter 有权
标题翻译：电流镜电路和模数转换器
公开(公告)号：US20020135424A1
公开(公告)日：2002-09-26
申请号：US10104761
申请日：2002-03-22
申请人： NEC CORPORATION
发明人： Naoto Oikawa
IPC分类号： H03F003/04
CPC分类号： H03M1/50 , G05F3/262
摘要： A current mirror circuit includes a first constant current source, a first MOS transistor, a second MOS transistor, a first operational amplifier and a second operational amplifier. The first constant current source which outputs a constant current to a first node based on a first reference voltage. The first MOS transistor which has a source grounded, a gate connected to the second MOS transistor and a drain connected to the first node. The second MOS transistor which has a source grounded, a gate connected to the first MOS transistor and a drain connected to a second node. The first operational amplifier which has a first input terminal connected to the first node, a second input terminal connected to a third node which is connected to a second reference voltage and an output terminal connected to the gates of the first and second MOS transistors. The second operational amplifier which has a first input terminal connected to the third node, a second input terminal connected to the second node and an output terminal connected through a feedback circuit to the second node.
摘要翻译：电流镜电路包括第一恒流源，第一MOS晶体管，第二MOS晶体管，第一运算放大器和第二运算放大器。第一恒定电流源，其基于第一参考电压向第一节点输出恒定电流。源极接地的第一MOS晶体管，连接到第二MOS晶体管的栅极和连接到第一节点的漏极。源极接地的第二MOS晶体管，连接到第一MOS晶体管的栅极和连接到第二节点的漏极。第一运算放大器具有连接到第一节点的第一输入端子，连接到连接到第二参考电压的第三节点的第二输入端子以及连接到第一和第二MOS晶体管的栅极的输出端子。第二运算放大器具有连接到第三节点的第一输入端子，连接到第二节点的第二输入端子和通过反馈电路连接到第二节点的输出端子。

10. 发明申请

US20020036543A1 High-output amplifier 失效
标题翻译：高输出放大器
公开(公告)号：US20020036543A1
公开(公告)日：2002-03-28
申请号：US09961111
申请日：2001-09-24
申请人： KABUSHIKI KAISHA TOSHIBA
发明人： Yasuhiko Kuriyama
IPC分类号： H03F003/04
CPC分类号： H03F1/302
摘要： A high-output amplifier (1), having a high gain, (2) having a high efficiency, (3) less affected by temperature changes, (4) operative linearly in output levels over a wide dynamic range and (5) using a control voltage, comprises a transistor amplifier, and a bias circuit having first and second bias circuits. A first transistor provided in the first bias circuit has a first terminal and a control terminal that are short-circuited and connected to a control source as a first high-voltage-side source and to a control circuit of the transistor amplifier, and a second terminal connected to a low-voltage-side source. A second transistor provided in the second bias circuit has a control terminal connected to the control source, a first terminal connected to the second high-voltage-side source, and a second terminal connected to the control terminal of the transistor amplifier.
摘要翻译：具有高增益的高输出放大器（1），（2）具有高效率，（3）受温度变化影响较小;（4）在宽动态范围内在输出电平上线性运行;（5）使用控制电压包括晶体管放大器和具有第一和第二偏置电路的偏置电路。设置在第一偏置电路中的第一晶体管具有短路并连接到作为第一高压侧源极的控制源和晶体管放大器的控制电路的第一端子和控制端子，端子连接到低压侧源。设置在第二偏置电路中的第二晶体管具有连接到控制源的控制端子，连接到第二高压侧源极的第一端子和连接到晶体管放大器的控制端子的第二端子。

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