公开(公告)号：US10651799B2

公开(公告)日：2020-05-12

申请号：US16457442

申请日：2019-06-28

Applicant: QUALCOMM Incorporated

Inventor： Zhiqing Zhang ,  Chi Fan Yung ,  Joseph Duncan ,  Jun Hua ,  Song Shi ,  Thomas Marra

IPC: H03F1/30 ,  H03F1/02 ,  G06F1/3212 ,  G06F1/26 ,  H02M3/155 ,  H03F3/195 ,  H03F3/213 ,  H04B1/04

Abstract: Certain aspects of the present disclosure provide methods and apparatus for generating an envelope tracking power supply voltage. For example, certain aspects of the present disclosure provide an envelope tracking power supply having a linear amplifier having an output coupled to a power supply node of an amplifier, wherein a power supply node of the linear amplifier is coupled to a first voltage supply node. The envelope tracking power supply may also include a switch mode power supply having an output coupled to the power supply node of the amplifier. Certain aspects also include a circuit having a first switch coupled to the first voltage supply node and a second switch coupled to a second voltage supply node, wherein a power supply node of the switch mode power supply is coupled to the first switch and the second switch.

公开(公告)号：US10340854B2

公开(公告)日：2019-07-02

申请号：US15643124

申请日：2017-07-06

Applicant: QUALCOMM Incorporated

Inventor： Zhiqing Zhang ,  Chi Fan Yung ,  Joseph Duncan ,  Jun Hua ,  Song Shi ,  Thomas Marra

IPC: H03F1/30 ,  H03F1/02 ,  H02M3/155 ,  H03F3/195 ,  H03F3/213

Abstract: Certain aspects of the present disclosure provide methods and apparatus for generating an envelope tracking power supply voltage. For example, certain aspects of the present disclosure provide an envelope tracking power supply having a linear amplifier having an output coupled to a power supply node of an amplifier, wherein a power supply node of the linear amplifier is coupled to a first voltage supply node. The envelope tracking power supply may also include a switch mode power supply having an output coupled to the power supply node of the amplifier. Certain aspects also include a circuit having a first switch coupled to the first voltage supply node and a second switch coupled to a second voltage supply node, wherein a power supply node of the switch mode power supply is coupled to the first switch and the second switch.

公开(公告)号：US10128798B2

公开(公告)日：2018-11-13

申请号：US15643242

申请日：2017-07-06

Applicant: QUALCOMM Incorporated

Inventor： Joseph Duncan ,  Thomas Marra ,  Song Shi ,  Iulian Mirea

IPC: H01Q11/12 ,  H03F1/02 ,  H03F1/26 ,  H03F3/195 ,  H03F3/213 ,  H04B1/04

Abstract: Certain aspects of the present disclosure provide methods and apparatus for operating an envelope tracking power supply. The method may include receiving, from a modem of a device, information indicative of a transmit waveform statistic of a signal to be wirelessly transmitted by the device. The method may further include adjusting a configuration of the envelope tracking power supply based on the transmit waveform statistic of the signal.