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公开(公告)号：US20230253930A1
公开(公告)日：2023-08-10
申请号：US17805316
申请日：2022-06-03
Applicant: Qorvo US, Inc.
Inventor： Baker Scott , Chong Woo , George Maxim , Sukchan Kang , Hui Liu
CPC classification number: H03F1/52 , H03F3/20 , H03F2200/426 , H03F1/0205
Abstract: A power amplifier with clamp and feedback protection circuitry is disclosed. In one aspect, the power amplifier is initially protected by a fast-acting clamp circuit whose overall size is relatively limited. Subsequent operation allows a comparatively slowly acting feedback loop to dominate the protection of the power amplifier. By providing the two protection circuits, each optimized for a particular phase of protection, the overall size of associated protection circuitry may be diminished while still protecting the power amplifier from failure inducing conditions.
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公开(公告)号：US20230170858A1
公开(公告)日：2023-06-01
申请号：US17538606
申请日：2021-11-30
Applicant: Qorvo US, Inc.
Inventor： Baker Scott , Chong Woo , George Maxim
CPC classification number: H03F3/245 , H03F3/195 , H03F1/0227 , H03F1/0288 , H03F2200/451 , H03F2200/102
Abstract: A power amplifier system having a power amplifier stage with dynamic bias circuitry is disclosed. Also included is bias control circuitry having a compression sensor having a sensor input coupled to a RF signal output and a sensor output, wherein the compression sensor is configured to generate a gain deviation signal in response to a sensed deviation from a flat gain profile of the power amplifier stage. Further included is a bias driver that is configured to drive dynamic bias circuitry to adjust bias to the power amplifier stage to maintain the flat gain profile in response to the gain deviation signal.
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公开(公告)号：US20230246599A1
公开(公告)日：2023-08-03
申请号：US17589050
申请日：2022-01-31
Applicant: Qorvo US, Inc.
Inventor： Baker Scott , Chong Woo , George Maxim
CPC classification number: H03F1/302 , H03F3/245 , H03F2200/451 , H03F2200/447
Abstract: A power amplifier with feedback ballast resistance is disclosed. In one aspect, a power amplifier cell may receive a bias signal from a bias circuit where the bias circuit includes a feedback loop having an impedance that, from the perspective of the bias signal is relatively low impedance, but from a ballast thermal control perspective provides sufficient resistance to avoid thermal runaway. In exemplary aspects, this feedback loop may be extended to operate with multiple power amplifier cells and provide differential mode thermal control optimized for individual cell bias signal control and common mode thermal control optimized for thermal control of the collective power amplifier cells of the power amplifier.
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公开(公告)号：US20230094883A1
公开(公告)日：2023-03-30
申请号：US17488823
申请日：2021-09-29
Applicant: Qorvo US, Inc.
Inventor： Baker Scott , Stephen James Franck , George Maxim , Chong Woo
Abstract: A power amplifier includes an over-current protection loop and/or an over-voltage protection loop to assist in preventing operation outside a safe operation zone. In a further exemplary aspect, triggering of the over-current protection loop adjusts a threshold voltage for the over-voltage protection loop. In further exemplary aspects, the over-current protection loop may adjust not only a bias regulator, but also provide an auxiliary control signal that further limits signals reaching the power amplifier. In still further exemplary aspects, the over-voltage protection loop may operate independently of the over-current protection current loop or the over-voltage protection loop contribute to an over-current protection signal.
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公开(公告)号：US20240313711A1
公开(公告)日：2024-09-19
申请号：US18413290
申请日：2024-01-16
Applicant: Qorvo US, Inc.
Inventor： George Maxim , Nadim Khlat , Chong Woo , Baker Scott
CPC classification number: H03F1/3282 , H04B1/0475 , H03F2200/102 , H03F2200/105 , H03F2201/3233 , H04B2001/0425
Abstract: Distortion correction for fast supply voltage changes in a power amplifier is disclosed. In one aspect, analog predistortion in the power amplifier to maintain linearity of the power amplifier is based on a supply voltage, thereby avoiding a need to write into registers. Further, the supply voltage with its changes may be used to set the predistortion levels both for amplitude and phase. By using the supply voltage, long signals writing to registers in the power amplifier or power management circuit may be avoided, resulting in faster application of predistortion. The faster application of the predistortion works nicely with symbol or even sub-symbol adjustments to the supply voltage resulting in greater efficiency in the power amplifier.
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Patent Agency Ranking
公开(公告)号：US20210305944A1
公开(公告)日：2021-09-30
申请号：US16834049
申请日：2020-03-30
Applicant: Qorvo US, Inc.
Inventor： Baker Scott , George Maxim , Chong Woo
IPC: H03F1/30
Abstract: A device having device function circuitry configured to receive a device signal and output a modified device signal is disclosed. The device includes a device temperature sensor configured to generate a device temperature signal that is proportional to a temperature of the device function circuitry. The device function circuitry is further configured to maintain power dissipation of the device function circuitry to below a predetermined safe power dissipation level in response to a control signal that is generated based upon the device temperature signal.
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公开(公告)号：US20240429876A1
公开(公告)日：2024-12-26
申请号：US18830966
申请日：2024-09-11
Applicant: Qorvo US, Inc.
Inventor： Baker Scott , Chong Woo , George Maxim
Abstract: A power amplifier includes an over-current protection loop and/or an over-voltage protection loop to assist in preventing operation outside a safe operation zone. In a further exemplary aspect, triggering of the over-current protection loop adjusts a threshold voltage for the over-voltage protection loop. In further exemplary aspects, the over-current protection loop may adjust not only a bias regulator but also provide an auxiliary control signal that further limits signals reaching the power amplifier. In still further exemplary aspects, the over-voltage protection loop may operate independently of the over-current protection current loop, or the over-voltage protection loop contributes to an over-current protection signal.
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公开(公告)号：US12155353B2
公开(公告)日：2024-11-26
申请号：US17488877
申请日：2021-09-29
Applicant: Qorvo US, Inc.
Inventor： Baker Scott , Chong Woo , George Maxim
Abstract: A power amplifier includes an over-current protection loop and/or an over-voltage protection loop to assist in preventing operation outside a safe operation zone. In a further exemplary aspect, triggering of the over-current protection loop adjusts a threshold voltage for the over-voltage protection loop. In further exemplary aspects, the over-current protection loop may adjust not only a bias regulator, but also provide an auxiliary control signal that further limits signals reaching the power amplifier. In still further exemplary aspects, the over-voltage protection loop may operate independently of the over-current protection current loop or the over-voltage protection loop contribute to an over-current protection signal.
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公开(公告)号：US20230163734A1
公开(公告)日：2023-05-25
申请号：US17972795
申请日：2022-10-25
Applicant: Qorvo US, Inc.
Inventor： Baker Scott , George Maxim , Chong Woo
CPC classification number: H03F3/195 , H03F3/245 , H03F2200/451
Abstract: A power amplifier system is disclosed having an N number of transistors coupled together drain-to-source between a supply node and a fixed voltage node, wherein a first one of the N number of transistors coupled nearest to the fixed voltage node is configured to operate as an amplifying device in an ON-mode, and remaining ones of the N number of transistors are configured to operate as cascode devices in the ON-mode and to operate as turned-off switches in an OFF-mode. A controller is configured to place the N number of transistors in the first mode when a radio frequency (RF) signal is to be amplified by the first one of the N number of transistors and to place the N number of transistors in the second mode when the RF signal is not to be amplified by the first one of the N number of transistors.
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公开(公告)号：US11196392B2
公开(公告)日：2021-12-07
申请号：US16834049
申请日：2020-03-30
Applicant: Qorvo US, Inc.
Inventor： Baker Scott , George Maxim , Chong Woo
IPC: H03F1/30
Abstract: A device having device function circuitry configured to receive a device signal and output a modified device signal is disclosed. The device includes a device temperature sensor configured to generate a device temperature signal that is proportional to a temperature of the device function circuitry. The device function circuitry is further configured to maintain power dissipation of the device function circuitry to below a predetermined safe power dissipation level in response to a control signal that is generated based upon the device temperature signal.
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