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21. 发明授权

EP2557686B1 System and method for improving power efficiency of a transmitter 有权转让
公开(公告)号：EP2557686B1
公开(公告)日：2020-08-05
申请号：EP12180089.0
申请日：2012-08-10
申请人： Intel IP Corporation
发明人： Oliaei, Omid , Newman, David , Kirschenmann, Mark
IPC分类号： H03F3/24 , H03F3/45 , H03F3/68 , H03D7/14 , H03D7/16 , H03H7/25 , H03F1/02 , H03F3/21 , H03F1/22 , H03F3/72

22. 发明公开

EP3641338A1 AUDIO PROCESSING CIRCUIT AND TERMINAL DEVICE 有权
公开(公告)号：EP3641338A1
公开(公告)日：2020-04-22
申请号：EP18820785.6
申请日：2018-04-18
申请人： Huawei Technologies Co., Ltd.
发明人： YIN, Deyang , LI, Jun , LI, Ding , DU, Shuai
IPC分类号： H04R3/02 , H03F3/72
摘要： An audio processing circuit and a terminal device are provided. The circuit includes a cascade operational amplifier circuit, an output node, and a pull-down circuit. The cascade operational amplifier circuit is configured to amplify an input voltage, and output the amplified voltage to the output node. The cascade operational amplifier circuit includes a first operational amplifier circuit and a second operational amplifier circuit. The first operational amplifier circuit is a front-stage operational amplifier of the second operational amplifier circuit. The first operational amplifier circuit includes a main operational amplifier and a secondary operational amplifier that are connected in parallel. One end of the pull-down circuit is coupled to the output node, and the other end of the pull-down circuit is grounded or connected to a common mode voltage module. The pull-down circuit is configured to pull down a voltage at the output node after the first operational amplifier circuit is turned on. The second operational amplifier circuit is configured to: after the secondary operational amplifier is turned on, control a voltage gain of the secondary operational amplifier to change gradually from low to high, so as to control the voltage at the output node to change gradually from low to high with gradual changing of output resistance. With the circuit provided in this solution, POP noise generated in an operational amplifier path establishment procedure can be effectively suppressed.

23. 发明公开

EP3639366A1 RADIO FREQUENCY POWER AMPLIFIER 有权
公开(公告)号：EP3639366A1
公开(公告)日：2020-04-22
申请号：EP18753521.6
申请日：2018-07-31
申请人： Raytheon Company
发明人： LAIGHTON, Christopher, M. , BIELUNIS, Alan, J. , WATTERS, Edward, A.
IPC分类号： H03F1/02 , H03F1/30 , H03F3/195 , H03F3/24 , H03F3/72

24. 发明公开

EP3510412A1 DISPOSITIF D'AMPLIFICATION ELECTRONIQUE, APPAREIL DE MESURE ET PROCEDE DE MESURE ASSOCIES 有权
公开(公告)号：EP3510412A1
公开(公告)日：2019-07-17
申请号：EP17780789.8
申请日：2017-09-05
申请人： Commissariat à l'énergie atomique et aux énergies alternatives
发明人： HAMRITA, Hassen , BOURBOTTE, Jean-Michel , KONDRASOVS, Vladimir , MAKIL, Hamid
IPC分类号： G01R15/08 , H03G1/00 , G01R19/00 , H03F3/72

25. 发明公开

EP3499713A1 AMPLIFICATION CIRCUIT HAVING OPTIMIZATION OF POWER 审中-公开
公开(公告)号：EP3499713A1
公开(公告)日：2019-06-19
申请号：EP19155202.5
申请日：2011-01-27
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： KNOPIK, Vincent
IPC分类号： H03F1/02 , H03F3/193 , H03F3/21 , H03F3/72
摘要： A Power amplifier circuit comprising an input (100), an output (700) comprising;
- means for sensing (131, 132, 133) the input voltage;
- a set of n cascode circuits, each comprising a first transistor (110-1, 110-2, ... 110-n) having a gate, a source and a drain terminal and further comprising a second transistor (120-1, 120-2, ... 120-n) having gate, source and drain terminal; the source and gate of the first transistor of said cascode circuits being respectively connected to a first reference voltage (GND) and to receive the input signal (RFin), the drain of said first transistor being connected to the source of said second transistor, the drain of which being coupled to said output (700);
- a control ciurcuit (150) receiving the input voltage sensed by said sensing means (131, 132, 133) for generating a set of control signals which are transmitted to the gate of the second transistor of said n cascode circuits;
By activating or disactivating one or more of the n cascode circuits, the total size of the amplification components can be adapted to the value of the output power to generate.

26. 发明授权

EP2195924B1 SIGNAL AMPLIFIER STRUCTURE FOR RADIO TRANSMITTER 有权转让
公开(公告)号：EP2195924B1
公开(公告)日：2019-06-05
申请号：EP08787745.2
申请日：2008-08-22
申请人： Nokia Technologies Oy
发明人： VILHONEN, Sami
IPC分类号： H03F3/21 , H03G1/00 , H03G3/30 , H03F3/195 , H03F1/02 , H03F3/193 , H03F3/24 , H03F3/45 , H03F3/72 , H04B1/04 , H03D7/14

27. 发明授权

EP2482449B1 Amplification circuit having optimization of power 有权转让
公开(公告)号：EP2482449B1
公开(公告)日：2019-03-20
申请号：EP11368002.9
申请日：2011-01-27
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Knopik, Vincent
IPC分类号： H03F1/02 , H03F3/193 , H03F3/21 , H03F3/72

28. 发明授权

EP1467481B1 Glitch-free controllable RF power amplifier 有权
公开(公告)号：EP1467481B1
公开(公告)日：2019-03-06
申请号：EP03008289.5
申请日：2003-04-09
申请人： Sony Mobile Communications Inc
发明人： Filimonov, Nikolai, c/oSony Ericsson Mobile , Varlamov, Oleg, c/o Sony Ericsson Mobile , Itkin, Grigory, c/o Sony Ericsson Mobile
IPC分类号： H03F1/02 , H03F3/72 , H03G3/30 , H03G3/20

29. 发明授权

EP2863540B8 Low-quiescent current headset driver 有权转让
公开(公告)号：EP2863540B8
公开(公告)日：2019-01-23
申请号：EP14004197.1
申请日：2013-08-14
申请人： Avago Technologies International Sales Pte. Limited
发明人： Chen, Jianlong , Brooks, Todd , Arunachalam, Sasi
IPC分类号： H03F3/68 , H03F3/72 , H03F1/02 , H03F3/187 , H03F3/21 , H03F3/45

30. 发明公开

EP3407489A1 SWITCHLESS LINE-DI/MIC PRE-AMPLIFIER INPUT 审中-公开
公开(公告)号：EP3407489A1
公开(公告)日：2018-11-28
申请号：EP17202320.2
申请日：2017-11-17
申请人： Tymphany HK Limited
发明人： DE VRIES, Sebastiaan
IPC分类号： H03F3/187 , H03F3/45 , H04R3/00 , H03F3/72 , H03F1/56 , H03F3/68
CPC分类号： H03F3/45475 , H03F1/56 , H03F3/187 , H03F3/68 , H03F2200/03 , H03F2200/222 , H03F2200/261 , H03F2200/42 , H03F2200/48 , H03F2203/7233 , H04R3/00 , H04R2420/09
摘要： A switchless pre-amplifier input circuit includes an audio input connector that receives a first audio device operable at a first impedance and a second audio device operable at a second impedance less than the first impedance. A preamplifier circuit outputs a pre-amplified audio signal in response to amplifying a first audio signal generated by the first audio device or a second audio signal generated by the second audio device. The switchless pre-amplifier input circuit further includes a impedance selector circuit that adjusts an impedance at the output to reach the second impedance in response to connecting the second audio device to the audio input connector and to adjust the impedance at the output to reach the first impedance in response to connecting the first audio device to the audio input.

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