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公开(公告)号：EP4358401A3
公开(公告)日：2024-07-10
申请号：EP24161505.3
申请日：2018-01-25
申请人： Analog Devices, Inc.
发明人： DAY, Christopher
CPC分类号： H03F1/0266 , H03F2203/4539220130101 , H03F2203/4545420130101 , H03F1/3211 , H03F3/19 , H03F2200/10220130101 , H03F2203/4511220130101 , H03F2203/4524420130101 , H03F2200/12920130101 , H03F2200/14420130101 , H03F2200/2120130101 , H03F2200/28520130101 , H03F2200/9920130101 , H03F3/45089 , H03F1/0222 , H03F1/22 , H03F3/21
摘要： A power amplifier circuit for broadband data communication over a path in a communication network can reduce or avoid gain compression, provide low distortion amplification performance, and can accommodate a wider input signal amplitude range. A dynamic variable bias current circuit can be coupled to a common emitter bias node of a differential pair of transistors to provide a dynamic variable bias current thereto as a function of an input signal amplitude of an input signal. Bias current is increased when input signal amplitude exceeds a threshold voltage established by an offset or level-shifting circuit. The frequency response of the bias current circuit can track the frequency content of the input signal. A delay in the signal path to the differential pair can phase-align the bias current to the amplification by the differential pair. A dynamic variable supply voltage can be based on an envelope of the input signal.
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公开(公告)号：EP4068635B1
公开(公告)日：2024-10-02
申请号：EP22157582.2
申请日：2022-02-18
CPC分类号： H04B1/04 , H03F1/0222 , H04B2001/04520130101 , H03F2200/10220130101 , H03F2200/45120130101 , H03F3/2175
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公开(公告)号：EP4441888A1
公开(公告)日：2024-10-09
申请号：EP22843459.3
申请日：2022-11-21
申请人： Qorvo US, Inc.
发明人： SCOTT, Baker , WOO, Chong , MAXIM, George
CPC分类号： H03F1/0272 , H03F3/195 , H03F3/213 , H03F3/245 , H03F2200/45120130101 , H03F2200/10220130101
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公开(公告)号：EP4358401A2
公开(公告)日：2024-04-24
申请号：EP24161505.3
申请日：2018-01-25
申请人： Analog Devices, Inc.
发明人： DAY, Christopher
IPC分类号： H03F1/32
CPC分类号： H03F1/0266 , H03F2203/4539220130101 , H03F2203/4545420130101 , H03F1/3211 , H03F3/19 , H03F2200/10220130101 , H03F2203/4511220130101 , H03F2203/4524420130101 , H03F2200/12920130101 , H03F2200/14420130101 , H03F2200/2120130101 , H03F2200/28520130101 , H03F2200/9920130101 , H03F3/45089 , H03F1/0222 , H03F1/22 , H03F3/21
摘要： A power amplifier circuit for broadband data communication over a path in a communication network can reduce or avoid gain compression, provide low distortion amplification performance, and can accommodate a wider input signal amplitude range. A dynamic variable bias current circuit can be coupled to a common emitter bias node of a differential pair of transistors to provide a dynamic variable bias current thereto as a function of an input signal amplitude of an input signal. Bias current is increased when input signal amplitude exceeds a threshold voltage established by an offset or level-shifting circuit. The frequency response of the bias current circuit can track the frequency content of the input signal. A delay in the signal path to the differential pair can phase-align the bias current to the amplification by the differential pair. A dynamic variable supply voltage can be based on an envelope of the input signal.
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公开(公告)号：EP4439977A1
公开(公告)日：2024-10-02
申请号：EP24166573.6
申请日：2024-03-26
发明人： ZHOU, Wei , QIAN, Yao , LI, Weinan
CPC分类号： H03F3/245 , H03F3/19 , H03F2200/43220130101 , H03F1/0227 , H03F2200/10220130101 , H03F2200/45120130101
摘要： Embodiments of this application provide an envelope tracking modulator, comprising: a linear amplification circuit, a coupling capacitor, a buck circuit, a circuit sensor, and an offset current generation circuit. An output end of the linear amplification circuit is coupled to a first end of the coupling capacitor, and a second end of the coupling capacitor is coupled to a power supply node. The offset current generation circuit is coupled to the first end and the second end of the coupling capacitor, and the offset current generation circuit is further coupled to a control end of the buck circuit. An input end of the circuit sensor is coupled to a line between the output end of the linear amplification circuit and the first end of the coupling capacitor, and an output end of the circuit sensor is coupled to the control end of the buck circuit.
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公开(公告)号：EP3574582B1
公开(公告)日：2024-09-18
申请号：EP18744503.6
申请日：2018-01-25
CPC分类号： H03F1/0266 , H03F2203/4539220130101 , H03F2203/4545420130101 , H03F1/3211 , H03F3/19 , H03F2200/10220130101 , H03F2203/4511220130101 , H03F2203/4524420130101 , H03F2200/12920130101 , H03F2200/14420130101 , H03F2200/2120130101 , H03F2200/28520130101 , H03F2200/9920130101 , H03F3/45089 , H03F1/0222 , H03F1/22 , H03F3/21
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公开(公告)号：EP4402797A1
公开(公告)日：2024-07-24
申请号：EP22786622.5
申请日：2022-09-15
申请人： Qorvo US, Inc.
发明人： KHLAT, Nadim , RETZ, James M.
CPC分类号： H03F1/0266 , H03F1/0222 , H04B17/13 , H03G3/3042 , H03F2200/10220130101 , H03F2200/45120130101 , H03F3/245 , H03F3/19 , H04B1/123 , H04B17/0085
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公开(公告)号：EP4362329A1
公开(公告)日：2024-05-01
申请号：EP23203465.2
申请日：2023-10-13
申请人： Apple Inc.
发明人： HENZLER, Stephan , LANGER, Andreas
CPC分类号： H03F3/245 , H03F1/565 , H03F2200/54120130101 , H03F3/19 , H03F2200/45120130101 , H03F2200/38720130101 , H04B1/0458 , H03F2200/10220130101 , H03F2200/23120130101
摘要： An electronic device may include wireless circuitry having an amplifier configured to receive a radio-frequency signal generated from a baseband signal, a first adjustable load component coupled to an output of the amplifier, a second adjustable load component coupled to the output of the amplifier, and a control signal generator configured to output one or more control signals for tuning the first and second adjustable load components based on an envelope of the baseband signal or the radio-frequency signal. The first adjustable load component can provide a first tuning range covering a first subrange of an instantaneous signal envelope of the baseband signal or the radio-frequency signal, whereas the second adjustable load can provide a second tuning range covering a second subrange of the instantaneous signal envelope of the baseband signal or the radio-frequency signal. The first and second tuning ranges are combined to provide an extended tuning range.
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