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公开(公告)号：US20050134378A1
公开(公告)日：2005-06-23
申请号：US10743220
申请日：2003-12-22
申请人： Alan Westwick , Timothy Dupuis , Susanne Paul
发明人： Alan Westwick , Timothy Dupuis , Susanne Paul
摘要： A method and apparatus provides an input structure for a power amplifier. In one example, the input structure has an input network and a predriver circuit to provide an input signal to the power amplifier. The input network includes a transformer for helping to maintain a constant input impedance. The predriver includes a limiting amplifier that provides isolation between the power amplifier and the RF input. A DC feedback circuit is used by the predriver that maintains the DC level of the inverters to a desired level.
摘要翻译： 方法和装置提供功率放大器的输入结构。 在一个示例中，输入结构具有输入网络和预驱动电路，以向功率放大器提供输入信号。 输入网络包括用于帮助保持恒定输入阻抗的变压器。 预驱动器包括限幅放大器，可在功率放大器和RF输入之间提供隔离。 预驱动器使用DC反馈电路，将逆变器的直流电平维持在期望的水平。
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公开(公告)号：US20060208799A1
公开(公告)日：2006-09-21
申请号：US11321753
申请日：2005-12-29
申请人： Susanne Paul , Alan Westwick , Timothy Dupuis
发明人： Susanne Paul , Alan Westwick , Timothy Dupuis
IPC分类号： H03F3/45
CPC分类号： H03F3/193 , H01L23/645 , H01L2223/6644 , H01L2224/16 , H01L2924/00011 , H01L2924/00014 , H01L2924/13091 , H01L2924/15192 , H01L2924/15311 , H01L2924/3011 , H03F3/195 , H03F3/2173 , H03F3/2176 , H03F3/30 , H03F3/45224 , H03F3/72 , H03F2203/45644 , H03F2203/45704 , H03K17/04163 , H03K17/6872 , H01L2224/0401
摘要： A method and apparatus is provided for use in power amplifiers for reducing the peak voltage that transistors are subjected to. A power amplifier is provided with first and second switching devices and an inductor connected between the switching devices. The switching devices are driven such that the switching devices are turned on and off during the same time intervals. Differential RF power amplifiers are also provided with inductive networks coupled at various nodes of the power amplifiers.
摘要翻译： 提供了一种用于功率放大器的方法和装置，用于降低晶体管经受的峰值电压。 功率放大器设置有第一和第二开关装置和连接在开关装置之间的电感器。 驱动开关装置，使得开关装置在相同的时间间隔期间被接通和断开。 差分RF功率放大器还提供耦合在功率放大器各个节点的感应网络。
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公开(公告)号：US20060244529A1
公开(公告)日：2006-11-02
申请号：US11373053
申请日：2006-03-11
申请人： Alan Westwick , Timothy Dupuis , Susanne Paul
发明人： Alan Westwick , Timothy Dupuis , Susanne Paul
IPC分类号： H03F1/00
摘要： A method and apparatus provides an input structure for a power amplifier. In one example, the input structure has an input network and a predriver circuit to provide an input signal to the power amplifier. The input network includes a transformer for helping to maintain a constant input impedance. The predriver includes a limiting amplifier that provides isolation between the power amplifier and the RF input. A DC feedback circuit is used by the predriver that maintains the DC level of the inverters to a desired level.
摘要翻译： 方法和装置提供功率放大器的输入结构。 在一个示例中，输入结构具有输入网络和预驱动电路，以向功率放大器提供输入信号。 输入网络包括用于帮助保持恒定输入阻抗的变压器。 预驱动器包括限幅放大器，可在功率放大器和RF输入之间提供隔离。 预驱动器使用DC反馈电路，将逆变器的直流电平维持在期望的水平。
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公开(公告)号：US20050134386A1
公开(公告)日：2005-06-23
申请号：US10743219
申请日：2003-12-22
申请人： Alan Westwick , Timothy Dupuis , Susanne Paul
发明人： Alan Westwick , Timothy Dupuis , Susanne Paul
CPC分类号： H03F3/21 , H03F3/45475 , H03F2203/45172 , H03F2203/45621
摘要： A method and apparatus provides an input structure for a power amplifier. In one example, the input structure has an input network and a predriver circuit to provide an input signal to the power amplifier. The input network includes a transformer for helping to maintain a constant input impedance. The predriver includes a limiting amplifier that provides isolation between the power amplifier and the RF input. A DC feedback circuit is used by the predriver that maintains the DC level of the inverters to a desired level.
摘要翻译： 方法和装置提供功率放大器的输入结构。 在一个示例中，输入结构具有输入网络和预驱动电路，以向功率放大器提供输入信号。 输入网络包括用于帮助保持恒定输入阻抗的变压器。 预驱动器包括限幅放大器，可在功率放大器和RF输入之间提供隔离。 预驱动器使用DC反馈电路，将逆变器的直流电平维持在期望的水平。
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公开(公告)号：US20070188226A1
公开(公告)日：2007-08-16
申请号：US11468383
申请日：2006-08-30
申请人： Alan Westwick , Timothy Dupuis , Susanne Paul
发明人： Alan Westwick , Timothy Dupuis , Susanne Paul
IPC分类号： H03F1/00
CPC分类号： H03F3/21 , H03F3/45475 , H03F2203/45172 , H03F2203/45621
摘要： A method and apparatus provides an input structure for a power amplifier. In one example, the input structure has an input network and a predriver circuit to provide an input signal to the power amplifier. The input network includes a transformer for helping to maintain a constant input impedance. The predriver includes a limiting amplifier that provides isolation between the power amplifier and the RF input. A DC feedback circuit is used by the predriver that maintains the DC level of the inverters to a desired level.
摘要翻译： 方法和装置提供功率放大器的输入结构。 在一个示例中，输入结构具有输入网络和预驱动电路，以向功率放大器提供输入信号。 输入网络包括用于帮助保持恒定输入阻抗的变压器。 预驱动器包括限幅放大器，可在功率放大器和RF输入之间提供隔离。 预驱动器使用DC反馈电路，将逆变器的直流电平维持在期望的水平。
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6.发明申请CIRCUIT AND METHOD OF ESTABLISHING DC BIAS LEVELS IN AN RF POWER AMPLIFIER 有权在RF功率放大器中建立直流偏置电平的电路和方法公开(公告)号：US20060244525A1
公开(公告)日：2006-11-02
申请号：US11278078
申请日：2006-03-30
申请人： Alan Westwick , Susanne Paul
发明人： Alan Westwick , Susanne Paul
IPC分类号： H03F1/36
CPC分类号： H03F3/189 , H03F1/30 , H03F3/45941
摘要： A method and apparatus is used to provide DC stabilization and noise reduction in a multistage power amplifier. The invention uses various feedback techniques to stabilize DC levels, which helps to reduce noise. The invention also uses other techniques to reduce noise, and to reduce the noise transfer function in a power amplifier.
摘要翻译： 一种方法和装置用于在多级功率放大器中提供直流稳定和降噪。 本发明使用各种反馈技术来稳定DC电平，这有助于降低噪声。 本发明还使用其它技术来降低噪声并降低功率放大器中的噪声传递功能。
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7.发明申请Circuit and method of establishing DC bias levels in an RF power amplifier 失效在RF功率放大器中建立DC偏置电平的电路和方法公开(公告)号：US20050134376A1
公开(公告)日：2005-06-23
申请号：US10743221
申请日：2003-12-22
申请人： Alan Westwick , Susanne Paul
发明人： Alan Westwick , Susanne Paul
CPC分类号： H03F3/189 , H03F1/30 , H03F3/45941
摘要： A method and apparatus is used to provide DC stabilization and noise reduction in a multistage power amplifier. The invention uses various feedback techniques to stabilize DC levels, which helps to reduce noise. The invention also uses other techniques to reduce noise, and to reduce the noise transfer function in a power amplifier.
摘要翻译： 一种方法和装置用于在多级功率放大器中提供直流稳定和降噪。 本发明使用各种反馈技术来稳定DC电平，这有助于降低噪声。 本发明还使用其它技术来降低噪声并降低功率放大器中的噪声传递功能。
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公开(公告)号：US20050134375A1
公开(公告)日：2005-06-23
申请号：US10743217
申请日：2003-12-22
申请人： Alan Westwick , Susanne Paul
发明人： Alan Westwick , Susanne Paul
CPC分类号： H03F3/45941 , H03F1/30
摘要： A method and apparatus is used to provide DC stabilization and noise reduction in a multistage power amplifier. The invention uses various feedback techniques to stabilize DC levels, which helps to reduce noise. The invention also uses other techniques to reduce noise, and to reduce the noise transfer function in a power amplifier.
摘要翻译： 一种方法和装置用于在多级功率放大器中提供直流稳定和降噪。 本发明使用各种反馈技术来稳定DC电平，这有助于降低噪声。 本发明还使用其它技术来降低噪声并降低功率放大器中的噪声传递功能。
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9.发明申请CIRCUIT AND METHOD OF ESTABLISHING DC BIAS LEVELS IN AN RF POWER AMPLIFIER 失效在RF功率放大器中建立直流偏置电平的电路和方法公开(公告)号：US20080048782A1
公开(公告)日：2008-02-28
申请号：US11764785
申请日：2007-06-18
申请人： Alan Westwick , Susanne Paul
发明人： Alan Westwick , Susanne Paul
IPC分类号： H03F1/30
CPC分类号： H03F3/189 , H03F1/30 , H03F3/45941
摘要： A method and apparatus is used to provide DC stabilization and noise reduction in a multistage power amplifier. The invention uses various feedback techniques to stabilize DC levels, which helps to reduce noise. The invention also uses other techniques to reduce noise, and to reduce the noise transfer function in a power amplifier.
摘要翻译： 一种方法和装置用于在多级功率放大器中提供直流稳定和降噪。 本发明使用各种反馈技术来稳定DC电平，这有助于降低噪声。 本发明还使用其它技术来降低噪声并降低功率放大器中的噪声传递功能。
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公开(公告)号：US09874887B2
公开(公告)日：2018-01-23
申请号：US13404981
申请日：2012-02-24
申请人： Shouli Yan , Alan Westwick
发明人： Shouli Yan , Alan Westwick
CPC分类号： G05F1/565
摘要： A voltage regulator circuit with variable feedback is disclosed. In one embodiment, a voltage regulator includes an amplifier having a first input configured to receive a reference voltage and a second input configured to receive a feedback signal. The voltage regulator further includes first and second transistors each having respective gate terminals coupled to an output of the amplifier. A resistor network coupled to the second input of the amplifier and further coupled to the first and second transistors. The resistor network is configured to produce the feedback signal based on currents through the first and second transistors, respectively.
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