公开(公告)号：US06225867B1

公开(公告)日：2001-05-01

申请号：US08996997

申请日：1997-12-23

申请人： John Ilowski ,  William Kung

发明人： John Ilowski ,  William Kung

IPC分类号： H03F152

CPC分类号： H03F1/52 ,  H03F1/302 ,  H03F2203/21178

摘要： The present invention deals with the problems related to thermal runaway and over-voltage breakdown in integrated circuits using a series of power transistors interconnected in a parallel circuit arrangement. The general technique described consists of a protection scheme that involves the application of a fusible material to form ballast resistor components. These components are connected in series with each of the transistors in the integrated circuits. The main advantages are significant area and cost savings in the manufacturing of the integrated circuits as well as an increase in their yield, thereby reducing costly field maintenance and equipment returns.

摘要翻译： 本发明涉及使用以并联电路布置互连的一系列功率晶体管的集成电路中的热失控和过电压击穿的问题。 所描述的一般技术包括保护方案，其涉及应用可熔材料形成镇流电阻器部件。 这些部件与集成电路中的每个晶体管串联连接。 主要优点是集成电路制造中的重要面积和成本节省以及其产量的增加，从而降低了现场维护和设备回报的昂贵成本。

公开(公告)号：US06744310B2

公开(公告)日：2004-06-01

申请号：US10101565

申请日：2002-03-20

申请人： Jun Honda

发明人： Jun Honda

IPC分类号： H03F152

CPC分类号： H03F3/2171 ,  H03F1/523 ,  H03F2200/426

摘要： A power amplifying device promptly detects an abnormal condition of a load and permits protection of an output without causing power loss. A test signal having a predetermined frequency and signal level is supplied to an amplifier, and the output level is measured. The measured level is compared with the output level that is projected when the test signal is supplied with an appropriate load connected to the amplifier so as to detect a load condition. If a determination result indicates that the load is short-circuited or released, then the operation of the amplifier is promptly interrupted.

摘要翻译： 功率放大装置迅速检测负载的异常状态，并允许输出保护而不会造成电力损失。 将具有预定频率和信号电平的测试信号提供给放大器，并测量输出电平。 将测量电平与在测试信号被提供有连接到放大器的适当负载以便检测负载条件时投射的输出电平进行比较。 如果确定结果指示负载短路或释放，则放大器的操作会立即中断。

公开(公告)号：US06747510B2

公开(公告)日：2004-06-08

申请号：US10163143

申请日：2002-06-07

申请人： Stephen A. Jantzi ,  Anilkumar V. Tammineedi ,  Jungwoo Song ,  Lawrence M. Burns ,  Donald G. McMullin ,  Agnes N. Woo

发明人： Stephen A. Jantzi ,  Anilkumar V. Tammineedi ,  Jungwoo Song ,  Lawrence M. Burns ,  Donald G. McMullin ,  Agnes N. Woo

IPC分类号： H03F152

CPC分类号： H03G3/001 ,  H03G1/0088

摘要： An upstream amplifier is integrated on a substrate with a digital-to-analog converter (DAC) to form an integrated circuit. In an embodiment, a low-pass filter is also integrated on the substrate. The output signal level of the upstream amplifier is controllable. In embodiments, fine adjustments are made to the output signal level of the upstream amplifier by varying a bias current of the DAC. A software control bit is used to switch between a power-on mode of operation and a power-down mode of operation. The upstream amplifier transmits in a burst mode. The power consumption of the upstream amplifier scales with the amplifier's output signal level. A high degree of matching is attained between the positive and negative paths of the upstream amplifier. This provides high immunity from common-mode disturbances such as substrate noise, clock spurs, and glitches caused by a gain change.

摘要翻译： 上游放大器集成在具有数模转换器（DAC）的基板上，以形成集成电路。 在一个实施例中，低通滤波器也集成在基板上。 上游放大器的输出信号电平是可控的。 在实施例中，通过改变DAC的偏置电流对上游放大器的输出信号电平进行微调。 软件控制位用于在上电操作模式和掉电操作模式之间切换。 上游放大器以突发模式发送。 上游放大器的功耗随放大器的输出信号电平而变化。 在上游放大器的正和负路径之间达到高度的匹配。 这提供了诸如衬底噪声，时钟刺激和由增益变化引起的毛刺等共模干扰的高抗扰性。

公开(公告)号：US06407639B1

公开(公告)日：2002-06-18

申请号：US09318332

申请日：1999-05-25

申请人： Patrick Jean ,  Pascal Talbot

发明人： Patrick Jean ,  Pascal Talbot

IPC分类号： H03F152

CPC分类号： H03F1/0216 ,  H03F2200/504 ,  H03G3/004

摘要： A radio frequency device and mobile terminal having this device, includes a power amplifier (PA) for radio frequency signals (IRF, ORF) and a stabilizer (STB) for controlling power variations of the radio frequency output signal (ORF) as a function of variations of a reference voltage (VCON). The stabilizer is equal to a nominal resistance (RN) having a predetermined value as a function of an isopower curve (H, DH) of the power amplifier and generates for the power amplifier a supply voltage (VPA) in dependence on the reference voltage (VCON) and the nominal resistance (RN), so that the power consumption (PPA) and output power (POUT) are independent of the real internal resistance (RPA) of the power amplifier.

摘要翻译： 具有该设备的射频设备和移动终端包括用于射频信号（IRF，ORF）的功率放大器（PA）和用于控制射频输出信号（ORF）的功率变化的稳定器（STB），其作为 参考电压（VCON）的变化。 稳定器等于具有作为功率放大器的等功率曲线（H，DH）的函数的预定值的标称电阻（RN），并且根据参考电压（功率放大器）产生功率放大器的电源电压（VPA） VCON）和标称电阻（RN），使得功耗（PPA）和输出功率（POUT）与功率放大器的实际内部电阻（RPA）无关。

公开(公告)号：US06816017B2

公开(公告)日：2004-11-09

申请号：US09931877

申请日：2001-08-20

申请人： Kiichi Yamashita ,  Tomonori Tanoue ,  Isao Ohbu ,  Kenji Sekine

发明人： Kiichi Yamashita ,  Tomonori Tanoue ,  Isao Ohbu ,  Kenji Sekine

IPC分类号： H03F152

CPC分类号： H03F3/19 ,  H03F1/0261 ,  H03F1/302 ,  H03F3/347 ,  H03F2200/444

摘要： A power amplifier module is provided with a function of protecting an amplifying device against destruction caused by a standing wave by reflection from an antenna end in load variation. Increase in base current from idling current of a final stage amplifying portion GaAs-HBT in load variation is detected and canceled and collector current is restrained to thereby prevent an increase in output and prevent destruction of GaAs-RET. By also using a function of successively lowering idling current when power source voltage is elevated and a clipping function of diodes connected in parallel with output stage GaAs-RET, voltage as well as current more than necessary are avoided from being applied on the output stage GaAs-RET.

摘要翻译： 功率放大器模块具有保护放大装置的功能，以防止由负载变化引起的天线反射引起的驻波的破坏。 检测并抵消了负载变化中的最终级放大部分GaAs-HBT的空载电流的基极电流的增加，并抑制集电极电流，从而防止输出增加并防止GaAs-RET的破坏。 通过使用在电源电压升高时连续降低空载电流并且与输出级GaAs-RET并联连接的二极管的限幅功能也被避免施加在输出级GaAs上的功能。 -RET。

公开(公告)号：US06724254B2

公开(公告)日：2004-04-20

申请号：US10139083

申请日：2002-05-03

申请人： Jun Hui Lin

发明人： Jun Hui Lin

IPC分类号： H03F152

CPC分类号： H03G11/02

摘要： The amplifier comprises a power suppl, a current sensing element for sensing a current in the current path of the power supply, a detecting circuit responsive to the current sensing element, and voltage reducing means for reducing the signal amplitude of at least one of the audio signals in response to the detection circuit. The detecting circuit comprises in a preferred embodiment a threshold circuit, and when the current in the current path of the power supply is above a predefined threshold, the detection circuit together with the voltage reducing means reduce at least the signal amplitude of one of the audio channels. The current sensing element is for example a current sensing resistor and the detecting circuit is a voltage detection circuit in parallel to this resistor. The voltage reducing means comprise advantageously two diodes for each channel, via which a positive and a negative voltage limit is applied to the signal path of the audio signals.

摘要翻译： 放大器包括电源，用于感测电源的电流路径中的电流的电流感测元件，响应于电流感测元件的检测电路，以及用于减小至少一个音频的信号幅度的电压降低装置 响应于检测电路的信号。 检测电路在优选实施例中包括阈值电路，并且当电源的电流路径中的电流高于预定阈值时，检测电路与电压降低装置一起至少降低音频之一的信号幅度 频道 电流感测元件例如是电流感测电阻器，并且检测电路是与该电阻器并联的电压检测电路。 电压降低装置有利地包括用于每个通道的两个二极管，通过该二极管将正和负电压限制施加到音频信号的信号路径。

公开(公告)号：US06703900B2

公开(公告)日：2004-03-09

申请号：US10163113

申请日：2002-06-05

申请人： Vadim V. Ivanov ,  Shilong Zhang ,  Gregory H. Johnson

发明人： Vadim V. Ivanov ,  Shilong Zhang ,  Gregory H. Johnson

IPC分类号： H03F152

CPC分类号： H03F3/3028 ,  H03F1/308 ,  H03F1/3217

摘要： A differential amplifier includes an input stage (13) and an output stage (100) including an output transistor (M11) having a source coupled to a supply voltage (VDD), a gate coupled to a terminal (14) of the input stage, and a drain coupled to an output conductor (22). A recovery circuit (1A) is coupled between the supply voltage and the gate of the output transistor for limiting the voltage on the gate of the output transistor in response to the output voltage be within a predetermined range of the supply voltage and includes a recovery transistor (M4) with a source coupled to the output conductor and a drain coupled to the gate of the output transistor and a common-gate amplifier (29A) having a built-in offset a first input coupled to the output conductor, a second input coupled to the supply voltage, and an output coupled to the gate of the recovery transistor.

摘要翻译： 差分放大器包括输入级（13）和输出级（100），输出级（100）包括具有耦合到电源电压（VDD）的源极的输出晶体管（M11），耦合到输入级的端子（14）的栅极， 以及耦合到输出导体（22）的漏极。 恢复电路（1A）耦合在电源电压和输出晶体管的栅极之间，用于响应于输出电压在电源电压的预定范围内来限制输出晶体管的栅极上的电压，并且包括恢复晶体管 （M4），其源极耦合到所述输出导体，以及耦合到所述输出晶体管的栅极的漏极和具有内置偏移的共栅极放大器（29A），所述第一输入耦合到所述输出导体，第二输入耦合 并且耦合到恢复晶体管的栅极的输出。

公开(公告)号：US06597244B2

公开(公告)日：2003-07-22

申请号：US10068201

申请日：2002-02-05

申请人： Larry M. Tichauer

发明人： Larry M. Tichauer

IPC分类号： H03F152

CPC分类号： H04B1/0458 ,  H03F1/0261 ,  H03F1/0272 ,  H03F2200/207

摘要： A system and method is provided to compensate an amplifier circuit for changes in a load impedance in order to maintain a substantially optimum performance for the amplifier. More specifically, if the load impedance increases, then the amplifier is reconfigured to produce an output impedance that is likewise increased. One way of reconfiguring the amplifier for a load impedance increase is to increase the supply voltage to the device. The increase in the supply voltage to the device increases the rail to rail operation of the device. This would allow more dynamic range for the system performance. Assuming the current is substantially constant, the impedance seen the output of the amplifier will increase and be multiplied up to the impedance desired by the load resulting in a more optimum power transfer. Other parameters, such as the input drive and bias voltage to the amplifier can be changed in order to improve the performance of the amplifier.

公开(公告)号：US06593814B2

公开(公告)日：2003-07-15

申请号：US09950438

申请日：2001-09-10

申请人： Günter Donig

发明人： Günter Donig

IPC分类号： H03F152

CPC分类号： H03F1/52 ,  H03F3/45085 ,  H03F3/4556 ,  H03F2203/45418 ,  H03F2203/45431 ,  H03F2203/45458 ,  H03F2203/45464 ,  H03F2203/45471 ,  H03F2203/45508

摘要： An amplifier circuit having an amplifier stage is specified, in which, in order to avoid breakdown effects in the transistors thereof, an in-phase regulator is provided which, on the load side, is connected on the one hand to the amplifier stage and on the other hand to a reference-ground potential terminal, and which limits the voltage dropped across the amplifier stage. The in-phase regulator on the reference-ground potential side also enables the use of standard components at high supply voltages. The amplifier circuit can be used for example as a radio frequency output stage.

摘要翻译： 具有放大器级的放大器电路，其中为了避免其晶体管中的击穿效应，提供了一个同相调节器，其在负载侧一方面连接到放大器级并且接通 另一方面涉及到参考地电位端子，并且限制放大器级上的电压。 基准电位侧的同相调节器也可以在高电源电压下使用标准组件。 放大器电路可以例如用作射频输出级。

公开(公告)号：US06483386B1

公开(公告)日：2002-11-19

申请号：US09676539

申请日：2000-09-29

申请人： Daniel E. Cress ,  Jeffery Scott Hunt

发明人： Daniel E. Cress ,  Jeffery Scott Hunt

IPC分类号： H03F152

CPC分类号： H03F1/523

摘要： An apparatus comprising a native device coupled to an input of an amplifier. The native device is configured to provide a high voltage protection in response to an enable signal.

摘要翻译： 一种包括耦合到放大器的输入端的天线装置的装置。 本地设备被配置为响应于使能信号提供高电压保护。