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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
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.
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公开(公告)号：US20160266591A1
公开(公告)日：2016-09-15
申请号：US14656398
申请日：2015-03-12
Applicant: QUALCOMM Incorporated
Inventor： Jun Hua , Iulian Mirea
IPC: G05F1/445
Abstract: Disclosed is circuitry having an input stage and an output stage. A first compensation network may be connected to the input and output stages, and configured to split a pole at the input stage and a pole at the output stage. A second compensation network may be connected to the input and output stage. The second compensation network may be configured to suppress peaking of a gain of the circuit at frequencies near the pole at the output stage.
Abstract translation: 公开了具有输入级和输出级的电路。 第一补偿网络可以连接到输入和输出级，并且被配置为在输入级分割极点和在输出级分割极点。 第二补偿网络可以连接到输入和输出级。 第二补偿网络可以被配置为抑制在输出级处的极附近的频率处的电路的增益的峰值。
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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
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.
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