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公开(公告)号：US12068765B2
公开(公告)日：2024-08-20
申请号：US17814671
申请日：2022-07-25
发明人： Florinel G. Balteanu , Yu Zhu , Paul T. DiCarlo
CPC分类号： H04B1/0078 , H04B1/0458 , H04B1/1027 , H04B2001/0408 , H04B2001/1063
摘要： Apparatus and methods for envelope controlled radio frequency (RF) switches are provided. In certain embodiments, a power amplifier provides an RF signal to an antenna by way of an RF switch. Additionally, the envelope signal is used not only to control a power amplifier supply voltage of the power amplifier, but also to control a regulated voltage used to turn on the RF switch. For example, a level shifter can use a regulated voltage from charge pump circuitry to turn on the RF switch, and the envelope signal can be provided to the charge pump circuitry and used to control the voltage level of the regulated voltage over time.
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公开(公告)号：US20230082437A1
公开(公告)日：2023-03-16
申请号：US17814671
申请日：2022-07-25
发明人： Florinel G. Balteanu , Yu Zhu , Paul T. DiCarlo
摘要： Apparatus and methods for envelope controlled radio frequency (RF) switches are provided. In certain embodiments, a power amplifier provides an RF signal to an antenna by way of an RF switch. Additionally, the envelope signal is used not only to control a power amplifier supply voltage of the power amplifier, but also to control a regulated voltage used to turn on the RF switch. For example, a level shifter can use a regulated voltage from charge pump circuitry to turn on the RF switch, and the envelope signal can be provided to the charge pump circuitry and used to control the voltage level of the regulated voltage over time.
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公开(公告)号：US20220328980A1
公开(公告)日：2022-10-13
申请号：US17655913
申请日：2022-03-22
发明人： Paul T. DiCarlo , William J. Domino , David Richard Pehlke , Grant Darcy Poulin , Gong Bin Tang
摘要： Reconfigurable patch antenna systems are provided herein. In certain embodiments, a mobile device includes a patch antenna configured to handle a radio frequency signal at a signal feed. The patch antenna includes a plurality of antenna segments. The front-end system further includes a plurality of switches each configured to control connection of a respective one of the first plurality of antenna segments to the first signal feed, and a control circuit configured to control the plurality of switches to provide a frequency adjustment to the patch antenna.
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公开(公告)号：US20220038091A1
公开(公告)日：2022-02-03
申请号：US17374881
申请日：2021-07-13
发明人： Hailing Wang , Dylan Charles Bartle , Hanching Fuh , Jerod F. Mason , David Scott Whitefield , Paul T. DiCarlo
摘要： Disclosed herein are switching or other active FET configurations that implement a branch design with one or more interior FETs of a main path coupled in parallel with one or more auxiliary FETs of an auxiliary path. Such designs include a circuit assembly for performing a switching function that includes a branch with a plurality of auxiliary FETs coupled in series and a main FET coupled in parallel with an interior FET of the plurality of auxiliary FETs. The body nodes of the FETs can be interconnected and/or connected to a body bias network. The body nodes of the FETs can be connected to body bias networks to enable individual body bias voltages to be used for individual or groups of FETs.
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公开(公告)号：US11190182B2
公开(公告)日：2021-11-30
申请号：US15895890
申请日：2018-02-13
IPC分类号： H03K17/693 , H04B1/40 , H03K3/356 , H02M3/07 , H01L23/00 , H01L25/065 , H03K17/10
摘要： Disclosed herein are non-limiting examples of charge pumps that reduce the introduction of noise into a circuit in which they are implemented and/or lower the output impedance when providing certain voltages (e.g., negative voltage generators). The disclosed technologies utilize a plurality of smaller charge pumps (or charge pump units) working in parallel that operate on different clock phases rather than using a single charge pump with a relatively large flying capacitor or a plurality of charge pumps in series. This can, for example, reduce spurious signals or spurs that arise due at least in part to the characteristics of the clock signal. The disclosed technologies may be particularly advantageous for SOI-based components and circuits.
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公开(公告)号：US10566943B2
公开(公告)日：2020-02-18
申请号：US15906219
申请日：2018-02-27
发明人： Ping Li , Paul T. DiCarlo
IPC分类号： H03G3/30 , H03F3/21 , H03F1/02 , H03F3/24 , H03F3/19 , H03F3/213 , H03F3/195 , H04B1/3827 , H03G3/00
摘要： Apparatus and methods for biasing of power amplifiers are disclosed. In one embodiment, a mobile device includes a transceiver that generates a radio frequency signal and a power amplifier enable signal, a power amplifier that provides amplification to the radio frequency signal and that is biased by a bias signal, and a bias circuit that receives the power amplifier enable signal and generates the bias signal. The bias circuit includes a gain correction circuit that generates a correction current in response to activation of the power amplifier enable signal, and a primary biasing circuit that generates the bias signal based on the correction current and the power amplifier enable signal.
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公开(公告)号：US10447207B2
公开(公告)日：2019-10-15
申请号：US15670434
申请日：2017-08-07
IPC分类号： H03F1/02 , H03F1/22 , H03F3/193 , H03F3/217 , H03F3/24 , H03K17/0812 , H03K17/10 , H03K17/16 , H03K17/284 , H03K17/693 , H04B1/04 , G10H1/057 , H02M1/00
摘要： Aspects of this disclosure relate to a switching circuit with enhanced linearity. The switching circuit can include a switch and an envelope generator. The switch can receive an input signal, provide an output signal, and receive an envelope signal corresponding to an envelope of the input signal. The envelope generator can generate the envelope signal so as to cause intermodulation distortion in the output signal to be reduced to cause linearity of the switch to be improved.
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8.发明授权公开(公告)号：US10389350B2
公开(公告)日：2019-08-20
申请号：US15716264
申请日：2017-09-26
发明人： Hailing Wang , Dylan Charles Bartle , Hanching Fuh , Jerod F. Mason , David Scott Whitefield , Paul T. DiCarlo
摘要： Disclosed herein are switching or other active FET configurations that implement a main-auxiliary branch design. Such designs include a circuit assembly for performing a switching function that includes a branch including a main path in parallel with an auxiliary path, both the main path and the auxiliary path having a plurality of field-effect transistors. The circuit assembly also includes a first gate bias network connected to the main path. The circuit assembly also includes a second gate bias network connected to a first subset of the plurality of FETs of the auxiliary path. The circuit assembly also includes a third gate bias network connected to a second subset of the plurality of FETs of the auxiliary path, the second gate bias network and the third gate bias network being independently configurable to improve linearity of the switching function.
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公开(公告)号：US10361697B2
公开(公告)日：2019-07-23
申请号：US15851810
申请日：2017-12-22
IPC分类号： H04B1/48 , H03K17/16 , H01L27/12 , H03K17/693 , H04B1/04
摘要： Disclosed herein are systems and methods for reducing intermodulation distortion (IMD) in switches using parallel distorter circuits. A switch circuit can include having a switch arm and a distorter arm that is configured to act as a compensation circuit to compensate for non-linearities in the switch arm. The switch circuit can include a plurality of FETs in the switch arm configured to provide switching functionality. The distorter arm is configured to compensate for a non-linearity effect generated by the FETs of the switch arm when it is in an ON state. The distorter arm is configured to compensate for the non-linearity effect generated by the switch arm independent of the frequency of the signal received by the switch arm. Various configurations of switch arms and distorter arms can be implemented to reduce harmonic distortion as well as intermodulation distortion.
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公开(公告)号：US10181820B2
公开(公告)日：2019-01-15
申请号：US15596149
申请日：2017-05-16
摘要： Disclosed herein are power amplification systems that are dynamically biased based on a signal indicative of an envelope of the signal being amplified. The power amplification systems include a power amplifier configured to amplify an input radio-frequency (RF) signal to generate an output RF signal when biased by a biasing signal. The power amplification systems also include a bias component configured to generate the biasing signal based on an envelope signal indicative of an envelope of the input RF signal. The biasing signal can improve or enhance the linearity of the power amplification systems.
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