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公开(公告)号：US09496836B2
公开(公告)日：2016-11-15
申请号：US14284479
申请日：2014-05-22
Applicant: Ampleon Netherlands B.V.
Inventor： Jawad Qureshi
CPC classification number: H03F3/68 , H03F1/07 , H03F3/193 , H03F3/195 , H03F3/245 , H03F2200/255 , H03F2200/423 , H03F2200/451
Abstract: A Doherty amplifier has different drain voltages applied to the power transistors of the main and peaking stages. The impedance inverter comprises at least one first series phase shifting element between the output of the main amplifier and the Doherty amplifier output and at least one second series phase shifting element between the output of the peaking amplifier and the Doherty amplifier output. This provides a wideband combiner. The combination of this wideband combiner and different drain drive levels provides an improved combination of efficiency and bandwidth.
Abstract translation: Doherty放大器具有不同的漏极电压施加到主峰和峰值级的功率晶体管。 阻抗反相器包括在主放大器的输出与Doherty放大器输出之间的至少一个第一串联移相元件和在峰值放大器的输出与Doherty放大器输出之间的至少一个第二串联移相元件。 这提供了一种宽带组合器。 这种宽带组合器和不同的漏极驱动电平的组合提供了效率和带宽的改进的组合。
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公开(公告)号：US09257940B2
公开(公告)日：2016-02-09
申请号：US14067828
申请日：2013-10-30
Applicant: SKYWORKS SOLUTIONS, INC.
Inventor： Sabah Khesbak
CPC classification number: H03F1/0222 , H03F1/0211 , H03F1/0227 , H03F1/0277 , H03F1/0288 , H03F1/07 , H03F1/305 , H03F1/56 , H03F3/19 , H03F3/193 , H03F3/195 , H03F3/211 , H03F3/245 , H03F3/68 , H03F3/72 , H03F2200/102 , H03F2200/18 , H03F2200/222 , H03F2200/318 , H03F2200/387 , H03F2200/411 , H03F2200/429 , H03F2200/432 , H03F2200/451 , H03F2200/504 , H03F2200/516 , H03F2203/21106 , H03F2203/7209 , H03F2203/7221 , H03F2203/7236
Abstract: Apparatus and methods for capacitive load reduction are disclosed. In one embodiment, a power amplifier system includes a plurality of power amplifiers and an envelope tracking module for generating a supply voltage for the power amplifiers. The power amplifier system further includes a switch and a decoupling capacitor operatively associated with a first power amplifier of the system. The switch is configured to electrically float an end of the decoupling capacitor when the first power amplifier is disabled so as to reduce capacitive loading of the envelope tracker and to operate as a dampening resistor when the power amplifier is enabled so as to improve the stability of the system.
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公开(公告)号：US20150123734A1
公开(公告)日：2015-05-07
申请号：US14280279
申请日：2014-05-16
Applicant: Andrew LLC
Inventor： Marcello Donati , Fortunato Facchinetti
CPC classification number: H03F1/0288 , H03F1/07 , H03F3/2171 , H03F3/245 , H03F3/604 , H03F3/68 , H03F2200/192 , H03F2200/204 , H03F2200/255 , H03F2200/423 , H03F2200/451
Abstract: An amplifier including a main amplifier circuit and at least one peaking amplifier circuit. The peaking amplifier circuit is selectively operable to operate in combination with the main amplifier circuit. The main amplifier circuit and the peaking amplifier circuit each include an active device operation as an inverse Class-F amplifier element. The main amplifier circuit and the peaking amplifier circuit also each include a combined matching and resonator network coupled with an output of the respective active device so the active device operates as an inverse Class-F device, and a combined matching and resonator network coupled with an input of the respective active device.
Abstract translation: 一种放大器，包括主放大器电路和至少一个峰化放大器电路。 峰化放大器电路可选择性地操作以与主放大器电路组合工作。 主放大器电路和峰化放大器电路各自包括作为反F级放大器元件的有源器件操作。 主放大器电路和峰化放大器电路也各自包括与相应有源器件的输出耦合的组合匹配和谐振器网络，使得有源器件作为反F类器件工作，并且组合匹配和谐振器网络耦合到 输入相应的有源器件。
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公开(公告)号：US20150002230A1
公开(公告)日：2015-01-01
申请号：US14301423
申请日：2014-06-11
Applicant: NXP B.V.
Inventor： Jawad Qureshi
IPC: H03F3/68
CPC classification number: H03F3/68 , H01L23/66 , H01L2223/6655 , H01L2924/0002 , H03F1/0288 , H03F1/07 , H03F1/483 , H03F1/56 , H03F3/193 , H03F3/245 , H03F2200/111 , H03F2200/222 , H03F2200/36 , H03F2200/387 , H03F2203/21103 , H03F2203/21106 , H01L2924/00
Abstract: A Doherty amplifier has at least one peaking amplifier which has first and second drain connections, wherein the first drain connection is connected to the output network, and the other second drain connection is connection to the load. By providing two drain connections, separate package leads to the peaking amplifier can be taken into account when designing the impedance inverter and an output impedance. In this way, the circuit operation can be optimised both for the impedance inversion function and for driving the output load.
Abstract translation: 多赫蒂放大器具有至少一个峰化放大器，其具有第一和第二漏极连接，其中第一漏极连接连接到输出网络，而另一个第二漏极连接与负载连接。 通过提供两个漏极连接，在设计阻抗逆变器和输出阻抗时，可以考虑到峰值放大器的独立封装引线。 以这种方式，电路操作可以针对阻抗反转功能和驱动输出负载进行优化。
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公开(公告)号：US20140347134A1
公开(公告)日：2014-11-27
申请号：US14367098
申请日：2012-12-12
Applicant: ALCATEL LUCENT
Inventor： Yang Yang , Lintao Liu , Xianguang Guo , Kaijie Jin , Zhengde Yang , Qiu Zhong
CPC classification number: H03F3/19 , H03F1/0288 , H03F1/07 , H03F1/48 , H03F3/211 , H03F3/68 , H03F2200/36 , H03F2203/21106 , H03F2203/21139
Abstract: The present invention provides a new structure of Doherty power amplifier. The present invention reduces use of ¼ wavelength lines and lowers the Q point of the Doherty power amplifier. The present method extends the DPA bandwidth with a simpler and more convenient design and facilitates the design of a narrowed size.
Abstract translation: 本发明提供了Doherty功率放大器的新结构。 本发明减少了1/4波长线的使用，降低了Doherty功率放大器的Q点。 本方法利用更简单和更方便的设计来扩展DPA带宽，并且有助于缩小尺寸的设计。
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Patent Agency Ranking
公开(公告)号：US2719190A
公开(公告)日：1955-09-27
申请号：US19242950
申请日：1950-10-27
Applicant: BELL TELEPHONE LABOR INC
Inventor： GORDON RAISBECK
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公开(公告)号：US2184571A
公开(公告)日：1939-12-26
申请号：US21030438
申请日：1938-05-27
Applicant: RCA CORP
Inventor： VANCE ARTHUR W
IPC: H03F1/07
CPC classification number: H03F1/07
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公开(公告)号：US2085011A
公开(公告)日：1937-06-29
申请号：US65686933
申请日：1933-02-15
Applicant: RCA CORP
Inventor： THEODORE DITCHAM WILLIAM
IPC: H03F1/07
CPC classification number: H03F1/07
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