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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：US12278603B2
公开(公告)日：2025-04-15
申请号：US17538606
申请日：2021-11-30
Applicant: Qorvo US, Inc.
Inventor： Baker Scott , Chong Woo , George Maxim
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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Patent Agency Ranking
公开(公告)号：US20250112601A1
公开(公告)日：2025-04-03
申请号：US18891610
申请日：2024-09-20
Applicant: Qorvo US, Inc.
Inventor： Baker Scott , Sukchan Kang , May Cao , George Maxim , Chong Woo , Steven Weigand , Bernd Schleicher , Rossella Diciomma , Tobias Mangold
Abstract: A multigenerational front-end module (FEM) is disclosed. In particular, a FEM having a single transmission path may include a single power amplifier with supporting elements such as for example, bias levels, load modulation, supply voltages, or the like, that may be reconfigured and tuned so as to allow the single power amplifier to adapt effectively and work with different generations of wireless protocols. The use of such an adaptive, reconfigurable, tunable transmission path allows smaller and more cost-effective FEMs to be provided. Settings for the various changes may be stored in a look-up table (LUT) or the like.
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公开(公告)号：US12267051B2
公开(公告)日：2025-04-01
申请号：US17587368
申请日：2022-01-28
Applicant: Qorvo US, Inc.
Inventor： Baker Scott , George Maxim , Nadim Khlat , Chong Woo , Jungmin Park
Abstract: A power amplifier system is disclosed having a first amplifier with a high-power input and a high-power output. A second amplifier has a low-power input and a low-power output. A reconfigurable mode switch network has a first series switch branch coupled between the high-power output and an RF output, a first shunt branch is coupled between the RF output and a fixed voltage node, and a second series switch branch is coupled between the low-power output and a shared node of the first shunt branch. The shared node separates the first shunt branch into a first shared section that is between the RF output and the shared node and a second shared section that is between the shared node and the fixed voltage node.
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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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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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