VOLTAGE PROTECTION CIRCUIT TO PREVENT POWER AMPLIFIER BURNOUT, AND ELECTRONIC DEVICE HAVING THE SAME

    公开(公告)号:US20200313703A1

    公开(公告)日:2020-10-01

    申请号:US16832495

    申请日:2020-03-27

    Abstract: Disclosed is a voltage protection circuit for preventing power amplifier burnout in an electronic device. The electronic device includes a power amplifier (PA) configured to amplify a transmission signal, a switch configured to set a path of a signal outputted from the PA, a bias control circuit configured to control the supply of a bias current driving the PA, and a voltage protection circuit configured to provide a main control signal for turning off the PA earlier than turning off the switch based on a battery voltage providing a driving power of the electronic device, and forward the main control signal to the bias control circuit, wherein, in response to receiving the main control signal instructing to turn off the PA from the voltage protection circuit, the bias control unit stops the supply of the bias current driving the PA.

    ELECTRONIC DEVICE INCLUDING SPHERICAL STRUCTURE

    公开(公告)号:US20200238977A1

    公开(公告)日:2020-07-30

    申请号:US16751780

    申请日:2020-01-24

    Abstract: An electronic device including a first device having a spherical housing, and a second device arranged on a surface of the spherical housing, wherein the first device includes a first driving device arranged in the spherical housing and configured to deliver power to the spherical housing, a structure arranged in the spherical housing and configured to arrange the second device on a surface of the spherical housing, a second driving device configured to trigger a movement of the structure, a processor electrically connected with the first driving device and the second driving device, and a memory operatively connected with the processor, wherein the memory is configured to store instructions that, when executed, enable the processor to control the second driving device to, in response to identifying a coupling of the second device with the first device, adjust an arrangement direction of the second device with respect to the first driving device.

    Switch and electronic device including the same

    公开(公告)号:US12283446B2

    公开(公告)日:2025-04-22

    申请号:US18077882

    申请日:2022-12-08

    Abstract: A switch in an electronic device includes a substrate, a first signal line, a second signal line, and a ground bridge. The first signal line is on the substrate and extends in a first direction. The second signal line is on the substrate and is spaced apart from the first signal line in a first direction parallel with the first signal line to branch the wireless communication signal at a first point and a second point of the first signal line. The ground bridge is at least partially movable in a space between the first signal line and the second signal line. A first capacitor is between a first point of the first signal line and one end of the second signal line, and a second capacitor is between a second point of the first signal line and the other end of the second signal line.

    Method for detecting a proximity of objects and electronic device supporting the same

    公开(公告)号:US12095493B2

    公开(公告)日:2024-09-17

    申请号:US17422624

    申请日:2021-06-01

    CPC classification number: H04B1/3838 H04W52/18

    Abstract: The disclosure relates to a method of detecting whether an external object is in proximity to an electronic device and an electronic device supporting the same. An electronic device according to an embodiment may include: a wireless communication circuit; an antenna electrically connected to the wireless communication circuit and configured to be fed with power from the wireless communication circuit at a first point; a voltage detector including circuitry configured to detect a peak voltage applied to the antenna; and a processor electrically connected to the voltage detector and the wireless communication circuit. The processor may be configured to: determine whether an external object is within a specified proximity to the electronic device based on the peak voltage detected by the voltage detector; and control the magnitude of power applied to the antenna via the wireless communication circuit based on a determination that the external object is within the specified proximity to the electronic device.

    ELECTRONIC DEVICE AND WIRELESS COMMUNICATION SYSTEM THEREOF

    公开(公告)号:US20240235702A1

    公开(公告)日:2024-07-11

    申请号:US18614307

    申请日:2024-03-22

    CPC classification number: H04B17/13 H04B17/102 H04W4/38

    Abstract: An electronic device includes a network monitor configured to acquire network environment information related to a radio frequency (RF) transmission signal; a transceiver configured to generate an envelope signal of the RF transmission signal; a transmission (Tx) module including a power amplifier for receiving the RF transmission signal from the transceiver and amplifying the RF transmission signal; and an envelope tracking (ET) modulator configured to receive the envelope signal from the transceiver and to provide a bias of a power amplifier to correspond to the envelope signal, wherein the ET modulator determines a magnitude of the bias of the power amplifier based on the network environment information acquired by the network monitor.

    ELECTRONIC DEVICE INCLUDING COUPLER
    78.
    发明公开

    公开(公告)号:US20240235586A9

    公开(公告)日:2024-07-11

    申请号:US18403443

    申请日:2024-01-03

    Abstract: Provided is an electronic device including a transceiver configured to output a first transmission signal, a first radio frequency (RF) module configured to amplify the first transmission signal obtained from the transceiver to generate an amplified first transmission signal, a first antenna configured to transmit the amplified first transmission signal, and a main coupler provided outside the first RF module along a transmission path between the first RF module and the first antenna, and configured to output a first coupling signal corresponding to the first transmission signal. The first RF module includes at least one power amplifier configured to amplify the first transmission signal, and a switch configured to connect one of a plurality of input ports, including at least one input port connected to the main coupler and configured to receive the first coupling signal output by the main coupler, with an output port connected to the transceiver.

    Electronic device and method for wireless communication

    公开(公告)号:US11962341B2

    公开(公告)日:2024-04-16

    申请号:US17562333

    申请日:2021-12-27

    CPC classification number: H04B1/44 H03F3/24 H03F2200/451

    Abstract: The disclosure relates to an electronic device and a method for wireless communication including a power amplification circuit. According to an embodiment, an electronic device may include: a radio frequency processing module comprising radio frequency circuitry, a first power amplification circuit connected to the radio frequency processing module, a second power amplification circuit connected to the radio frequency processing module and the first power amplification circuit, and a front-end module comprising circuitry connected to the second power amplification circuit and an antenna and configured to transmit a signal, wherein the second power amplification circuit is configured to acquire, from the first power amplification circuit, a first signal obtained by amplifying a signal output from the radio frequency processing module and a second signal by amplifying a signal output from the radio frequency processing module.

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