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公开(公告)号：US09641140B2
公开(公告)日：2017-05-02
申请号：US14317864
申请日：2014-06-27
Applicant: Ramanujam Srinidhi Embar , Weng Chuen Edmund Neo , Yu-Ting D. Wu
Inventor： Ramanujam Srinidhi Embar , Weng Chuen Edmund Neo , Yu-Ting D. Wu
CPC classification number: H03F3/217 , H01P1/20 , H03F1/56 , H03F3/195 , H03F3/245 , H03F3/60 , H03F2200/222 , H03F2200/387 , H03H7/383
Abstract: A matching network and method for matching a source impedance to a load impedance is provided. A bias feed microstrip structure is coupled to a direct current (DC) voltage source and has a bias feed microstrip electrical length less than one fifth of a fundamental wavelength of a fundamental frequency component of an input signal. A harmonic impedance transformation network can be configured to compensate for parasitic reactances of a precursor element. A tuned impedance element presents a short circuit impedance at the second harmonic impedance transformation network terminal for harmonic frequency components and presents a higher impedance for the fundamental frequency component. A fundamental impedance transformation network is configured to match a fundamental impedance transformation network input impedance for the fundamental frequency component to a load impedance of a load. Multiple instances of the harmonic impedance transformation network and the tuned impedance element can be provided.
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公开(公告)号：US09515613B2
公开(公告)日：2016-12-06
申请号：US14573669
申请日：2014-12-17
Applicant: Abdulrhman M. S. Ahmed , Ramanujam Srinidhi Embar , Yu-Ting D Wu
Inventor： Abdulrhman M. S. Ahmed , Ramanujam Srinidhi Embar , Yu-Ting D Wu
CPC classification number: H03F1/0288 , H03F1/0266 , H03F1/565 , H03F3/195 , H03F2200/111 , H03F2200/222 , H03F2200/423 , H03F2200/451
Abstract: A dual-band Doherty amplifier and method therefor are provided. The dual-band Doherty amplifier includes a first amplifier gain element, a first transmission line coupled to a first output of the first amplifier gain element, a second amplifier gain element, a second transmission line coupled to a second output of the second amplifier gain element, and a controller configured, when a signal to be amplified is in a first band, to provide a first bias signal to a first bias input of the first amplifier gain element and a second bias signal to a second bias input of the second amplifier gain element and, when the signal is in a second band, to provide the second bias signal to the first bias input of the first amplifier gain element and the first bias signal to the second bias input of the second amplifier gain element.
Abstract translation: 提供了一种双频带Doherty放大器及其方法。 双频带Doherty放大器包括第一放大器增益元件，耦合到第一放大器增益元件的第一输出端的第一传输线，第二放大器增益元件，耦合到第二放大器增益元件的第二输出的第二传输线 以及控制器，当待放大的信号处于第一频带时，将第一偏置信号提供给第一放大器增益元件的第一偏置输入，并将第二偏置信号提供给第二放大器增益的第二偏置输入 并且当信号处于第二频带时，将第二偏置信号提供给第一放大器增益元件的第一偏置输入并将第一偏置信号提供给第二放大器增益元件的第二偏置输入。
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公开(公告)号：US20160181990A1
公开(公告)日：2016-06-23
申请号：US14573669
申请日：2014-12-17
Applicant: Abdulrhman M. S. Ahmed , Ramanujam Srinidhi Embar , Yu-Ting D. Wu
Inventor： Abdulrhman M. S. Ahmed , Ramanujam Srinidhi Embar , Yu-Ting D. Wu
CPC classification number: H03F1/0288 , H03F1/0266 , H03F1/565 , H03F3/195 , H03F2200/111 , H03F2200/222 , H03F2200/423 , H03F2200/451
Abstract: A dual-band Doherty amplifier and method therefor are provided. The dual-band Doherty amplifier includes a first amplifier gain element, a first transmission line coupled to a first output of the first amplifier gain element, a second amplifier gain element, a second transmission line coupled to a second output of the second amplifier gain element, and a controller configured, when a signal to be amplified is in a first band, to provide a first bias signal to a first bias input of the first amplifier gain element and a second bias signal to a second bias input of the second amplifier gain element and, when the signal is in a second band, to provide the second bias signal to the first bias input of the first amplifier gain element and the first bias signal to the second bias input of the second amplifier gain element.
Abstract translation: 提供了一种双频带Doherty放大器及其方法。 双频带Doherty放大器包括第一放大器增益元件，耦合到第一放大器增益元件的第一输出的第一传输线，第二放大器增益元件，耦合到第二放大器增益元件的第二输出的第二传输线 以及控制器，当待放大的信号处于第一频带时，将第一偏置信号提供给第一放大器增益元件的第一偏置输入，并将第二偏置信号提供给第二放大器增益的第二偏置输入 并且当信号处于第二频带时，将第二偏置信号提供给第一放大器增益元件的第一偏置输入并将第一偏置信号提供给第二放大器增益元件的第二偏置输入。
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公开(公告)号：US20150381140A1
公开(公告)日：2015-12-31
申请号：US14317864
申请日：2014-06-27
Applicant: Ramanujam Srinidhi Embar , Weng Chuen Edmund Neo , Yu-Ting D. Wu
Inventor： Ramanujam Srinidhi Embar , Weng Chuen Edmund Neo , Yu-Ting D. Wu
CPC classification number: H03F3/217 , H01P1/20 , H03F1/56 , H03F3/195 , H03F3/245 , H03F3/60 , H03F2200/222 , H03F2200/387 , H03H7/383
Abstract: A matching network and method for matching a source impedance to a load impedance is provided. A bias feed microstrip structure is coupled to a direct current (DC) voltage source and has a bias feed microstrip electrical length less than one fifth of a fundamental wavelength of a fundamental frequency component of an input signal. A harmonic impedance transformation network can be configured to compensate for parasitic reactances of a precursor element. A tuned impedance element presents a short circuit impedance at the second harmonic impedance transformation network terminal for harmonic frequency components and presents a higher impedance for the fundamental frequency component. A fundamental impedance transformation network is configured to match a fundamental impedance transformation network input impedance for the fundamental frequency component to a load impedance of a load. Multiple instances of the harmonic impedance transformation network and the tuned impedance element can be provided.
Abstract translation: 提供了用于将源阻抗与负载阻抗匹配的匹配网络和方法。 偏置馈电微带结构耦合到直流（DC）电压源，并且具有小于输入信号的基波分量的基波长的五分之一的偏置馈电微带电长度。 谐波阻抗变换网络可被配置为补偿前体元件的寄生电抗。 调谐阻抗元件在二次谐波阻抗变换网络端子处呈现短路阻抗，用于谐波频率分量，并对基频分量呈现较高的阻抗。 基本阻抗变换网络被配置为将基频阻抗变换网络输入阻抗匹配到负载的负载阻抗。 可以提供谐波阻抗变换网络和调谐阻抗元件的多个实例。
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