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公开(公告)号：US20180138874A1
公开(公告)日：2018-05-17
申请号：US15808389
申请日：2017-11-09
Applicant: SKYWORKS SOLUTIONS, INC.
Inventor： Adrian John Bergsma
CPC classification number: H03G1/0088 , H03F3/19 , H03F3/21 , H03F3/245 , H03F3/45475 , H03F2200/411 , H03F2200/451 , H03G3/3042 , H03G2201/106 , H04B10/2575 , H04L25/085 , H04L27/0002
Abstract: A broadband amplifier assembly is provided that includes a fixed gain amplifier coupled to an adjustable attenuator which is further coupled to a power amplifier. The adjustable attenuator includes a plurality of attenuation cells directly coupled in series between the input and the output of the adjustable attenuator.
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公开(公告)号：US09954504B2
公开(公告)日：2018-04-24
申请号：US15365092
申请日：2016-11-30
Applicant: MURATA MANUFACTURING CO., LTD.
Inventor： Yasushi Oyama , Takayuki Tsutsui , Kazuhito Nakai
CPC classification number: H03G1/0094 , H03F1/56 , H03F3/19 , H03F3/213 , H03F3/245 , H03F3/72 , H03F2200/111 , H03F2200/165 , H03F2200/222 , H03F2200/318 , H03F2200/387 , H03F2203/7209 , H03G2201/106 , H03G2201/40
Abstract: A power amplification module includes a first input terminal that receives a first transmit signal in a first frequency band, a second input terminal that receives a second transmit signal in a second frequency band having a narrower transmit/receive frequency interval than the first frequency band, a first amplification circuit that receives and amplifies the first transmit signal to produce a first amplified signal and outputs the first amplified signal, a second amplification circuit that receives and amplifies the second transmit signal to produce a second amplified signal and outputs the second amplified signal, a third amplification circuit that receives and amplifies the first or second amplified signal to produce an output signal and outputs the output signal, and an attenuation circuit located between the second input terminal and the second amplification circuit and configured to attenuate a receive frequency band component of the second frequency band.
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33.发明申请公开(公告)号：US20170324431A1
公开(公告)日：2017-11-09
申请号：US15585230
申请日：2017-05-03
Applicant: Bury Sp.z.o.o.
Inventor： Bülent SOLAN
CPC classification number: H04B1/0475 , H03G3/3036 , H03G2201/106 , H04B1/0458 , H04B1/163 , H04B1/18 , H04B1/3822 , H04B1/3877 , H04B2001/0416 , H04W52/08 , H04W52/367 , H04W52/52
Abstract: A circuit arrangement for compensating for an attenuation occurring in an antenna signal link between a mobile radio terminal and an antenna has at least one antenna signal amplifier in the antenna signal link and a control unit for adjusting a gain factor. The antenna signal conducted through an associated antenna signal amplifier is amplified or attenuated. The circuit arrangement has a detection unit for detecting an antenna signal power (PM, PA) of the antenna signal in the signal path of the antenna signal link. The control unit is configured for changing the gain factor, detecting a change, changing the transmit power (PM) of the mobile radio terminal, and adapting the gain factor to the coupling attenuation of the antenna signal link in dependence on a detected response of the mobile radio terminal.
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34.发明申请公开(公告)号：US20170230022A1
公开(公告)日：2017-08-10
申请号：US15515365
申请日：2015-07-31
Applicant: Samsung Electronics Co., Ltd.
Inventor： In-Kyu LEE , Woo-Yeun KIM , Hyung-Bum KIM , Min-Hee SUNG , Young-Min SONG
CPC classification number: H03G3/3042 , H03F1/0205 , H03F3/193 , H03F3/245 , H03F2200/451 , H03G3/00 , H03G2201/106 , H04B1/40 , H04B1/48 , H04B17/327 , H04W52/52
Abstract: An apparatus and a method for improving nonlinearity of a power amplifier in a wireless communication system are provided. A transmission apparatus in a wireless communication system comprises: at least one processor; a transceiver; and an amplifier for amplifying a signal provided from the transceiver, wherein if a power of a signal inputted into the transceiver is smaller than a reference value, the transceiver attenuates the power of the signal based on a gain compensation value corresponding to the power of the signal.
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35.发明申请公开(公告)号：US20170077874A1
公开(公告)日：2017-03-16
申请号：US15344304
申请日：2016-11-04
Applicant: Freescale Semiconductor, Inc.
Inventor： ABDULRHMAN M.S. AHMED , MARIO M. BOKATIUS , PAUL R. HART , JOSEPH STAUDINGER , RICHARD E. SWEENEY
CPC classification number: H03F1/0288 , G06F13/4282 , G06G7/10 , H03F3/189 , H03F3/19 , H03F3/211 , H03F3/602 , H03F3/68 , H03F2200/387 , H03F2200/438 , H03F2200/451 , H03F2203/21106 , H03F2203/21193 , H03G1/0088 , H03G2201/106 , H04L7/0079 , H04L27/22
Abstract: Embodiments of circuits for use with an amplifier that includes multiple amplifier paths include a first circuit and a second circuit in parallel with the first circuit. The first circuit includes a first input coupled to a first power divider output, a first output coupled to a first amplifier path of the multiple amplifier paths, and a first adjustable phase shifter and a first attenuator series coupled between the first input and the first output. The second circuit includes a second input coupled to a second power divider output, a second output coupled to a second amplifier path of the multiple amplifier paths, and a second adjustable phase shifter coupled between the second input and the second output.
Abstract translation: 与包括多个放大器路径的放大器一起使用的电路的实施例包括与第一电路并联的第一电路和第二电路。 第一电路包括耦合到第一功率分配器输出的第一输入，耦合到多个放大器路径的第一放大器路径的第一输出以及耦合在第一输入和第一输出之间的第一可调移相器和第一衰减器串联 。 第二电路包括耦合到第二功率分配器输出的第二输入，耦合到多个放大器路径的第二放大器路径的第二输出以及耦合在第二输入和第二输出之间的第二可调相移器。
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Patent Agency Ranking
36.发明授权公开(公告)号：US09219453B2
公开(公告)日：2015-12-22
申请号：US14287139
申请日：2014-05-26
Applicant: Freescale Semiconductor, Inc.
Inventor： Abdulrhman M.S. Ahmed , Mario M. Bokatius , Paul R. Hart , Joseph Staudinger , Richard E. Sweeney
CPC classification number: H03F1/0288 , G06F13/4282 , G06G7/10 , H03F3/189 , H03F3/19 , H03F3/211 , H03F3/602 , H03F3/68 , H03F2200/387 , H03F2200/438 , H03F2200/451 , H03F2203/21106 , H03F2203/21193 , H03G1/0088 , H03G2201/106 , H04L7/0079 , H04L27/22
Abstract: Embodiments of circuits for use with an amplifier that includes multiple amplifier paths include a first series circuit and a second series circuit in parallel with the first series circuit. The first series circuit includes a first input coupled to a first power divider output, a first output coupled to a first amplifier path of the multiple amplifier paths, and a first adjustable phase shifter and a first adjustable attenuator series coupled between the first input and the first output. The second series circuit includes a second input coupled to a second power divider output, a second output coupled to a second amplifier path of the multiple amplifier paths, and a second adjustable phase shifter and a second adjustable attenuator series coupled between the second input and the second output.
Abstract translation: 与包括多个放大器路径的放大器一起使用的电路的实施例包括与第一串联电路并联的第一串联电路和第二串联电路。 第一串联电路包括耦合到第一功率分配器输出的第一输入，耦合到多个放大器路径的第一放大器路径的第一输出，以及耦合在第一输入和第二输出之间的第一可调移相器和第一可调衰减器 第一输出。 第二串联电路包括耦合到第二功率分配器输出的第二输入，耦合到多个放大器路径的第二放大器路径的第二输出以及耦合在第二输入和第二输入之间的第二可调移相器和第二可调衰减器串联 第二输出。
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公开(公告)号：US20150015339A1
公开(公告)日：2015-01-15
申请号：US14327365
申请日：2014-07-09
Applicant: RFAXIS, INC.
Inventor： OLEKSANDR GORBACHOV , HUAN ZHAO , LISETTE L. ZHANG , LOTHAR MUSIOL , YONGXI QIAN
CPC classification number: H03F1/523 , H03F1/0266 , H03F1/56 , H03F3/195 , H03F3/245 , H03F2200/105 , H03F2200/192 , H03F2200/204 , H03F2200/222 , H03F2200/318 , H03F2200/387 , H03F2200/405 , H03F2200/411 , H03F2200/451 , H03F2200/555 , H03F2200/78 , H03G3/3042 , H03G2201/106
Abstract: An RF power amplifier circuit and input power limiter circuits are disclosed. A power detector generates a voltage output proportional to a power level of an input signal. There is a directional coupler with a first port connected to a transmit signal input, a second port connected to the input matching network, and a third port connected to the power detector. A first power amplifier stage with an input is connected to the input matching network and an output is connected to the transmit signal output. A control circuit connected to the power detector generates a gain reduction signal based upon a comparison of the voltage output from the power detector to predefined voltage levels corresponding to specific power levels of the input signal. Overall gain of the RF power amplifier circuit is reduced based upon the gain reduction signal that adjusts the configurations of the circuit components.
Abstract translation: 公开了RF功率放大器电路和输入功率限制器电路。 功率检测器产生与输入信号的功率电平成比例的电压输出。 存在定向耦合器，其中第一端口连接到发射信号输入，连接到输入匹配网络的第二端口和连接到功率检测器的第三端口。 具有输入的第一功率放大器级连接到输入匹配网络，并且输出端连接到发射信号输出端。 连接到功率检测器的控制电路基于从功率检测器输出的电压与对应于输入信号的特定功率电平的预定电压电平的比较产生增益减小信号。 基于调整电路部件的配置的增益减小信号，RF功率放大器电路的总体增益被减小。
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公开(公告)号：US08514007B1
公开(公告)日：2013-08-20
申请号：US13360473
申请日：2012-01-27
Applicant: Abdulrhman M. S Ahmed , Mario M. Bokatius , Paul R. Hart , Joseph Staudinger , Richard E. Sweeney
Inventor： Abdulrhman M. S Ahmed , Mario M. Bokatius , Paul R. Hart , Joseph Staudinger , Richard E. Sweeney
IPC: G06G7/12
CPC classification number: H03F1/0288 , G06F13/4282 , G06G7/10 , H03F3/189 , H03F3/19 , H03F3/211 , H03F3/602 , H03F3/68 , H03F2200/387 , H03F2200/438 , H03F2200/451 , H03F2203/21106 , H03F2203/21193 , H03G1/0088 , H03G2201/106 , H04L7/0079 , H04L27/22
Abstract: An adjustable power splitter includes: a power divider with an input and a first and second divider output; a first adjustable phase shifter and first adjustable attenuator series coupled to the first divider output and providing a first power output; and a second adjustable phase shifter and second adjustable attenuator series coupled to the second divider output and providing a second power output.
Abstract translation: 可调功率分配器包括：具有输入的功率分配器和第一和第二分频器输出; 第一可调移相器和第一可调衰减器串联耦合到第一分频器输出并提供第一功率输出; 以及耦合到第二分频器输出并提供第二功率输出的第二可调移相器和第二可调衰减器系列。
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公开(公告)号：US20240056045A1
公开(公告)日：2024-02-15
申请号：US17884697
申请日：2022-08-10
Applicant: D'Amore Engineering, LLC
Inventor： Anthony T. D'Amore , Juan Rodriguez
CPC classification number: H03G3/3005 , H04R3/02 , G06F3/162 , H03F3/183 , H03G2201/106 , H03F2200/03
Abstract: An amplifier power attenuator utilizes an amplified audio feedback signal from an audio amplifier (which is driving a loudspeaker), along with a user-set impedance and a maximum voltage set-point reflective of the operational parameters of the loudspeaker, to attenuate an audio signal prior to amplification thereby preventing damage to the loudspeaker. The impedance of a variable impedance optocoupler is changed to adjust the attenuation of the audio signal to one of a plurality of predetermined attenuation levels responsive to an error between a voltage level of the feedback signal and the maximum voltage set-point. The error is reflected in a counter value having a linear or non-linear relationship with the error dependent upon a magnitude of the error; the counter value is assessed against a plurality of target values associated with respective ones of the predetermined attenuation levels to identify the attenuation to be applied to the audio signal.
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公开(公告)号：US20190190623A1
公开(公告)日：2019-06-20
申请号：US16282621
申请日：2019-02-22
Applicant: SKYWORKS SOLUTIONS, INC.
Inventor： Adrian John Bergsma , Peihua Ye , Thomas Obkircher , Peter Harris Robert Popplewell , Gregory Edward Babcock , William J. Domino
IPC: H04B15/00 , H04B1/18 , H04B1/44 , H03G3/34 , H03F3/72 , H03F1/56 , H03G3/30 , H04B1/04 , H03F3/19 , H04B1/40
CPC classification number: H04B15/00 , H03F1/56 , H03F3/19 , H03F3/72 , H03F2200/387 , H03F2200/451 , H03F2203/7212 , H03G3/3042 , H03G3/348 , H03G2201/106 , H04B1/0458 , H04B1/18 , H04B1/40 , H04B1/44
Abstract: Systems and methods are provided for reducing the effects of an impedance mismatch between a communications system and a shared communications medium. A communication system, such as a transceiver within a cable modem, switches between various operating modes including a transmit mode, a receive mode, and a standby mode. The standby mode may be used while the transceiver is in an idle state between modes, such as while changing an amplifier gain states in between transmissions. While transitioning between modes, the impedance presented by the communications system can temporarily fluctuate causing unwanted signal reflections to propagate out of the communications system and on to the shared medium. Circuitry within the communications system, such as transmission circuitry including an adjustable attenuator, may be placed into a hybrid attenuation-isolation mode during the transition causing the magnitude of any unwanted signal reflections to be attenuated and reducing the impact on the shared medium.
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