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公开(公告)号：US11581855B2
公开(公告)日：2023-02-14
申请号：US17126552
申请日：2020-12-18
申请人： Qorvo US, Inc.
发明人： Terry J. Stockert
摘要： Disclosed is power amplifier circuitry having a bipolar junction power transistor with a base, a collector, and an emitter. The power amplifier circuitry includes bias correction sub-circuitry configured to generate a compensation current substantially opposite in phase and substantially equal in magnitude to an error current passed by a parasitic base-collector capacitance inherently coupled between the base and collector, wherein the bias correction sub-circuitry has a compensation output coupled to the base and through which the compensation current flows to substantially cancel the error current.
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公开(公告)号：US11469721B2
公开(公告)日：2022-10-11
申请号：US17144825
申请日：2021-01-08
申请人： Qorvo US, Inc.
发明人： Nadim Khlat , Terry J. Stockert
摘要： An uplink multiple input-multiple output (MIMO) transmitter apparatus includes a transmitter chain that includes a sigma-delta circuit that creates a summed (sigma) signal and a difference (delta) signal from two original signals to be transmitted. These new sigma and delta signals are amplified by power amplifiers to a desired output level before having two signals reconstructed from the amplified sigma and amplified delta signals by a second circuit. These reconstructed signals match the two original signals in content but are at a desired amplified level relative to the two original signals. The reconstructed signals are then transmitted through respective antennas as uplink signals. By employing this uplink MIMO transmitter apparatus, it is possible to use smaller power amplifiers, which may reduce footprint, power consumption, and costs of the uplink MIMO transmitter apparatus.
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公开(公告)号：US20210211105A1
公开(公告)日：2021-07-08
申请号：US17144825
申请日：2021-01-08
申请人： Qorvo US, Inc.
发明人： Nadim Khlat , Terry J. Stockert
摘要： An uplink multiple input-multiple output (MIMO) transmitter apparatus includes a transmitter chain that includes a sigma-delta circuit that creates a summed (sigma) signal and a difference (delta) signal from two original signals to be transmitted. These new sigma and delta signals are amplified by power amplifiers to a desired output level before having two signals reconstructed from the amplified sigma and amplified delta signals by a second circuit. These reconstructed signals match the two original signals in content but are at a desired amplified level relative to the two original signals. The reconstructed signals are then transmitted through respective antennas as uplink signals. By employing this uplink MIMO transmitter apparatus, it is possible to use smaller power amplifiers, which may reduce footprint, power consumption, and costs of the uplink MIMO transmitter apparatus.
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公开(公告)号：US20220385247A1
公开(公告)日：2022-12-01
申请号：US17819066
申请日：2022-08-11
申请人： Qorvo US, Inc.
发明人： Nadim Khlat , Terry J. Stockert
摘要： An uplink multiple input-multiple output (MIMO) transmitter apparatus includes a transmitter chain that includes a sigma-delta circuit that creates a summed (sigma) signal and a difference (delta) signal from two original signals to be transmitted. These new sigma and delta signals are amplified by power amplifiers to a desired output level before having two signals reconstructed from the amplified sigma and amplified delta signals by a second circuit. These reconstructed signals match the two original signals in content but are at a desired amplified level relative to the two original signals. The reconstructed signals are then transmitted through respective antennas as uplink signals. By employing this uplink MIMO transmitter apparatus, it is possible to use smaller power amplifiers, which may reduce footprint, power consumption, and costs of the uplink MIMO transmitter apparatus.
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公开(公告)号：US11387795B2
公开(公告)日：2022-07-12
申请号：US17154394
申请日：2021-01-21
申请人： Qorvo US, Inc.
发明人： Nadim Khlat , Terry J. Stockert
IPC分类号： H03F3/24 , H03F3/21 , H04B7/0452 , H04B1/04 , H03F1/32
摘要： An uplink multiple input-multiple output (MIMO) transmitter apparatus includes a transmitter chain that includes a sigma-delta circuit that creates a summed (sigma) signal and a difference (delta) signal from two original signals to be transmitted. These new sigma and delta signals are amplified by power amplifiers to a desired output level before having two signals reconstructed from the amplified sigma and amplified delta signals by a second circuit. These reconstructed signals match the two original signals in content but are at a desired amplified level relative to the two original signals. The reconstructed signals are then transmitted through respective antennas as uplink signals. By employing this uplink MIMO transmitter apparatus, it is possible to use smaller power amplifiers, which may reduce footprint, power consumption, and costs of the uplink MIMO transmitter apparatus.
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公开(公告)号：US11349513B2
公开(公告)日：2022-05-31
申请号：US17126561
申请日：2020-12-18
申请人： Qorvo US, Inc.
发明人： Terry J. Stockert , Nadim Khlat
摘要： The present disclosure relates to an envelope tracking system that is configured to improve the performance of radio frequency power amplifier circuitry by compensating for errors that become more significant as modulation bandwidth increases. These errors include power amplifier collector-base capacitance, time delay between power amplifier stages, and interconnect distance between the baseband modulation source and the power amplifier collector.
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公开(公告)号：US20210234520A1
公开(公告)日：2021-07-29
申请号：US17154394
申请日：2021-01-21
申请人： Qorvo US, Inc.
发明人： Nadim Khlat , Terry J. Stockert
IPC分类号： H03F3/24 , H03F3/21 , H03F1/32 , H04B1/04 , H04B7/0452
摘要： An uplink multiple input-multiple output (MIMO) transmitter apparatus includes a transmitter chain that includes a sigma-delta circuit that creates a summed (sigma) signal and a difference (delta) signal from two original signals to be transmitted. These new sigma and delta signals are amplified by power amplifiers to a desired output level before having two signals reconstructed from the amplified sigma and amplified delta signals by a second circuit. These reconstructed signals match the two original signals in content but are at a desired amplified level relative to the two original signals. The reconstructed signals are then transmitted through respective antennas as uplink signals. By employing this uplink MIMO transmitter apparatus, it is possible to use smaller power amplifiers, which may reduce footprint, power consumption, and costs of the uplink MIMO transmitter apparatus.
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公开(公告)号：US20210194522A1
公开(公告)日：2021-06-24
申请号：US17126561
申请日：2020-12-18
申请人： Qorvo US, Inc.
发明人： Terry J. Stockert , Nadim Khlat
IPC分类号： H04B1/04
摘要： The present disclosure relates to an envelope tracking system that is configured to improve the performance of radio frequency power amplifier circuitry by compensating for errors that become more significant as modulation bandwidth increases. These errors include power amplifier collector-base capacitance, time delay between power amplifier stages, and interconnect distance between the baseband modulation source and the power amplifier collector.
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公开(公告)号：US20210194437A1
公开(公告)日：2021-06-24
申请号：US17126552
申请日：2020-12-18
申请人： Qorvo US, Inc.
发明人： Terry J. Stockert
摘要： Disclosed is power amplifier circuitry having a bipolar junction power transistor with a base, a collector, and an emitter. The power amplifier circuitry includes bias correction sub-circuitry configured to generate a compensation current substantially opposite in phase and substantially equal in magnitude to an error current passed by a parasitic base-collector capacitance inherently coupled between the base and collector, wherein the bias correction sub-circuitry has a compensation output coupled to the base and through which the compensation current flows to substantially cancel the error current.
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公开(公告)号：US11616478B2
公开(公告)日：2023-03-28
申请号：US17819066
申请日：2022-08-11
申请人： Qorvo US, Inc.
发明人： Nadim Khlat , Terry J. Stockert
摘要： An uplink multiple input-multiple output (MIMO) transmitter apparatus includes a transmitter chain that includes a sigma-delta circuit that creates a summed (sigma) signal and a difference (delta) signal from two original signals to be transmitted. These new sigma and delta signals are amplified by power amplifiers to a desired output level before having two signals reconstructed from the amplified sigma and amplified delta signals by a second circuit. These reconstructed signals match the two original signals in content but are at a desired amplified level relative to the two original signals. The reconstructed signals are then transmitted through respective antennas as uplink signals. By employing this uplink MIMO transmitter apparatus, it is possible to use smaller power amplifiers, which may reduce footprint, power consumption, and costs of the uplink MIMO transmitter apparatus.
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