US9668215B2 - Apparatus and Methods for Envelope Tracking in A Mobile Device - Google Patents > 자유게시판

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US9668215B2 - Apparatus and Methods for Envelope Tracking in A Mobile …

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작성자 Frances 작성일25-09-18 05:59 조회8회 댓글0건

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black-and-white-photo-of-an-apple-watch.jpgEmbodiments of the invention relate to electronic techniques, and in particular, to envelope monitoring programs for radio frequency (RF) electronics. Power amplifiers can be included in mobile devices to amplify an RF signal for transmission by way of an antenna. RF sign having a relatively low power. It can be vital to handle RF signal amplification, as a desired transmit power stage can depend on how far the user is away from a base station and/or the cellular atmosphere. Power amplifiers may also be employed to assist in regulating the power degree of the RF signal over time, in order to stop sign interference from transmission during an assigned receive time slot. One approach for lowering power consumption of a energy amplifier is envelope monitoring, through which a provide voltage of the power amplifier is controlled in relation to the envelope of the RF sign or signal envelope. RF sign or signal envelope. RF enter signal and to generate the ability amplifier provide voltage by adjusting the magnitude of the buck voltage utilizing the output current.



AC coupling capacitor iTagPro features electrically related between the power amplifier provide voltage and an output of the error amplifier configured to generate the output present. AC coupling capacitor disposed between the output of the error amplifier and the facility amplifier provide voltage. PFET and a second NFET. MCM includes a buck converter and an error amplifier. MCM additional includes a feedback circuit electrically linked between the second enter of the error amplifier and the output of the error amplifier. MCM additional consists of an AC coupling capacitor disposed between the output of the error amplifier and the ability amplifier supply voltage. MCM additional includes a energy amplifier configured to obtain the facility amplifier supply voltage. DC-to-DC converter and an error amplifier. DC-to-DC converter is configured to generate a regulated voltage from a battery voltage, and to regulate a voltage magnitude of the regulated voltage utilizing a low frequency feedback signal that is based on a low frequency component of the ability amplifier provide voltage.



Additionally, the error iTagPro locator amplifier is configured to generate the power amplifier supply voltage by adjusting the magnitude of the regulated voltage using the output current. AC coupling capacitor electrically connected between the output of the error amplifier and the power amplifier supply voltage. DC-to-DC converter includes a buck converter configured to generate the regulated voltage. PMIC includes a DC-to-DC converter configured to generate a regulated voltage from a battery voltage, and to regulate a voltage level of the regulated voltage primarily based on a voltage stage of a control voltage. RF signal and the envelope sign. AC coupling capacitor electrically connected between the output of the error amplifier and the power amplifier provide voltage. DC-to-DC converter, controlling a magnitude of the regulated voltage primarily based on a control voltage, producing an output current based on an envelope sign using an error amplifier, iTagPro features generating a energy amplifier supply voltage for a energy amplifier by adjusting the magnitude of the regulated voltage using the output present, and controlling the DC-to-DC converter by altering a voltage degree of the control voltage based mostly at least in part on the facility amplifier supply voltage.



PMIC iTagPro features a DC-to-DC converter configured to generate a regulated voltage from a battery voltage, and to control a voltage degree of the regulated voltage utilizing a plurality of management voltages. RF signal and a second error amplifier configured to generate a second power amplifier supply voltage for the second energy amplifier by adjusting the voltage level of the regulated voltage primarily based on an envelope of the second RF sign. RF signal and a third error amplifier configured to generate a third energy amplifier supply voltage for the third energy amplifier by adjusting the voltage stage of the regulated voltage primarily based on an envelope of the third RF sign. FIG. 1 is a schematic diagram of a power amplifier module for amplifying a radio frequency (RF) signal. FIG. 2 is a schematic block diagram of an instance wireless gadget that may embody a number of of the facility amplifier modules of FIG. 1 . FIG. 3A is a schematic block diagram of one instance of a energy amplifier system including an envelope tracker.

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