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公开(公告)号：US09240776B2
公开(公告)日：2016-01-19
申请号：US13751480
申请日：2013-01-28
Applicant: RF Micro Devices, Inc.
Inventor： David Zimlich , Joseph Hubert Colles , Ricke W. Clark , Chris Levesque
CPC classification number: H03K7/08 , H03C2200/0045 , H03K3/017
Abstract: Analog-to-digital pulse width modulation circuitry includes thermometer code generator circuitry, clock generator circuitry, delay selection circuitry, and an output stage. The thermometer code generator circuitry is adapted to generate a digital thermometer code based upon a received analog input voltage. The clock generator circuitry is adapted to generate a reference clock and a plurality of delayed clock signals. The delay selection circuitry is connected between the thermometer code generator circuitry and the clock generator circuitry, and is adapted to select one of the delayed clock signals to present to the output stage based upon the generated thermometer code. The selected delayed clock signal is delayed by an amount of time that is proportional to the generated thermometer code. The reference clock signal and the selected delayed clock signal are delivered to the output stage where they are used to generate a pulse width modulated output signal.
Abstract translation: 模数 - 数字脉宽调制电路包括温度计代码发生器电路，时钟发生器电路，延迟选择电路和输出级。 温度计代码发生器电路适于基于接收的模拟输入电压产生数字温度计代码。 时钟发生器电路适于产生参考时钟和多个延迟的时钟信号。 延迟选择电路连接在温度计代码发生器电路和时钟发生器电路之间，并且适于根据生成的温度计代码来选择一个延迟的时钟信号以呈现给输出级。 所选择的延迟时钟信号被延迟与生成的温度计代码成比例的时间量。 参考时钟信号和所选择的延迟时钟信号被传送到输出级，在它们被用于产生脉冲宽度调制的输出信号。
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公开(公告)号：US09325281B2
公开(公告)日：2016-04-26
申请号：US14067019
申请日：2013-10-30
Applicant: RF Micro Devices, Inc.
Inventor： Chris Levesque , Kevin Wesley Kobayashi , Praveen Varma Nadimpalli , Ricke W. Clark
CPC classification number: H03F3/21 , H03F1/305 , H03F1/523 , H03F3/193 , H03F3/72 , H03F2200/18 , H03F2200/468 , H03F2203/45284 , H03G3/3042
Abstract: The present disclosure provides a power amplifier controller for starting up, operating, and shutting down a power amplifier. The power amplifier controller includes current sense amplifier circuitry adapted to monitor a main current of the power amplifier. A bias generator is also included and adapted to provide a predetermined standby bias voltage and an operational bias voltage based upon a main current level sensed by the current sense amplifier circuitry. The power amplifier controller further includes a sequencer adapted to control startup and shutdown sequences of the power amplifier. In at least one embodiment, the power amplifier is a gallium nitride (GaN) device, and the main current level sensed is a drain current of the GaN device. Moreover, the bias generator is a gate bias generator provided that the power amplifier is a field effect transistor (FET) device.
Abstract translation: 本公开提供了用于启动，操作和关闭功率放大器的功率放大器控制器。 功率放大器控制器包括适于监视功率放大器的主电流的电流检测放大器电路。 还包括偏置发生器并且适于基于由电流感测放大器电路感测的主电流电平提供预定待机偏置电压和操作偏置电压。 功率放大器控制器还包括适于控制功率放大器的启动和关闭序列的定序器。 在至少一个实施例中，功率放大器是氮化镓（GaN）器件，并且感测到的主电流电平是GaN器件的漏极电流。 此外，偏置发生器是栅极偏置发生器，其中功率放大器是场效应晶体管（FET）器件。
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公开(公告)号：US20140118074A1
公开(公告)日：2014-05-01
申请号：US14067019
申请日：2013-10-30
Applicant: RF Micro Devices, Inc.
Inventor： Chris Levesque , Kevin Wesley Kobayashi , Praveen Varma Nadimpalli , Ricke W. Clark
CPC classification number: H03F3/21 , H03F1/305 , H03F1/523 , H03F3/193 , H03F3/72 , H03F2200/18 , H03F2200/468 , H03F2203/45284 , H03G3/3042
Abstract: The present disclosure provides a power amplifier controller for starting up, operating, and shutting down a power amplifier. The power amplifier controller includes current sense amplifier circuitry adapted to monitor a main current of the power amplifier. A bias generator is also included and adapted to provide a predetermined standby bias voltage and an operational bias voltage based upon a main current level sensed by the current sense amplifier circuitry. The power amplifier controller further includes a sequencer adapted to control startup and shutdown sequences of the power amplifier. In at least one embodiment, the power amplifier is a gallium nitride (GaN) device, and the main current level sensed is a drain current of the GaN device. Moreover, the bias generator is a gate bias generator provided that the power amplifier is a field effect transistor (FET) device.
Abstract translation: 本公开提供了用于启动，操作和关闭功率放大器的功率放大器控制器。 功率放大器控制器包括适于监视功率放大器的主电流的电流检测放大器电路。 还包括偏置发生器并且适于基于由电流感测放大器电路感测的主电流电平提供预定待机偏置电压和操作偏置电压。 功率放大器控制器还包括适于控制功率放大器的启动和关闭序列的定序器。 在至少一个实施例中，功率放大器是氮化镓（GaN）器件，并且感测到的主电流电平是GaN器件的漏极电流。 此外，偏置发生器是栅极偏置发生器，其中功率放大器是场效应晶体管（FET）器件。
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公开(公告)号：US20130194051A1
公开(公告)日：2013-08-01
申请号：US13751480
申请日：2013-01-28
Applicant: RF MICRO DEVICES, INC.
Inventor： David Zimlich , Joseph Hubert Colles , Ricke W. Clark , Chris Levesque
IPC: H03K7/08
CPC classification number: H03K7/08 , H03C2200/0045 , H03K3/017
Abstract: Analog-to-digital pulse width modulation circuitry includes thermometer code generator circuitry, clock generator circuitry, delay selection circuitry, and an output stage. The thermometer code generator circuitry is adapted to generate a digital thermometer code based upon a received analog input voltage. The clock generator circuitry is adapted to generate a reference clock and a plurality of delayed clock signals. The delay selection circuitry is connected between the thermometer code generator circuitry and the clock generator circuitry, and is adapted to select one of the delayed clock signals to present to the output stage based upon the generated thermometer code. The selected delayed clock signal is delayed by an amount of time that is proportional to the generated thermometer code. The reference clock signal and the selected delayed clock signal are delivered to the output stage where they are used to generate a pulse width modulated output signal.
Abstract translation: 模数 - 数字脉宽调制电路包括温度计代码发生器电路，时钟发生器电路，延迟选择电路和输出级。 温度计代码发生器电路适于基于接收的模拟输入电压产生数字温度计代码。 时钟发生器电路适于产生参考时钟和多个延迟的时钟信号。 延迟选择电路连接在温度计代码发生器电路和时钟发生器电路之间，并且适于根据生成的温度计代码来选择一个延迟的时钟信号以呈现给输出级。 所选择的延迟时钟信号被延迟与生成的温度计代码成比例的时间量。 参考时钟信号和所选择的延迟时钟信号被传送到输出级，在它们被用于产生脉冲宽度调制的输出信号。
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