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    Power supply for radio-frequency power amplifier
    4.
    发明授权
    Power supply for radio-frequency power amplifier 有权

    公开(公告)号：US11482972B2

    公开(公告)日：2022-10-25

    申请号：US17060290

    申请日：2020-10-01

    申请人： SHAANXI REACTOR MICROELECTRONICS CO., LTD

    发明人： Qin Xia

    IPC分类号： H03F1/32 ,  H03F1/02 ,  H03F3/21

    摘要： A power supply for a radio-frequency power amplifier includes: first and second linear circuits, configured to linearly amplify a low-power signal and a high-power signal in a first envelope signal respectively and provide first and second voltages to the radio-frequency power amplifier respectively, wherein the low-power signal is a signal with a power ratio less than or equal to 30% in the envelope signal, and the high-power signal other than the low-power signal is a signal with a power ratio greater than or equal to 70% in the envelope signal; and a third circuit, configured to detect the linearly-amplified high-power signal and work in a constant on time control mode having a constant on time or a constant off time control mode having a constant off time so as to provide a third electric current to the radio-frequency power amplifier according to the detected linearly-amplified high-power signal.

    Sample pretreatment method of microextraction tube injection
    6.
    发明授权
    Sample pretreatment method of microextraction tube injection 有权

    公开(公告)号：US11287401B2

    公开(公告)日：2022-03-29

    申请号：US16655644

    申请日：2019-10-17

    申请人： WUHAN SEPENRICH TECHNOLOGIES CO., LTD

    发明人： Jun Xing ,  Xiaoyu Ye ,  Wenyu Huang

    IPC分类号： G01N30/06 ,  G01N30/18 ,  B01J20/28 ,  G01N1/22 ,  G01N1/40 ,  G01N30/00

    摘要： Disclosed is a sample pretreatment method of microextraction tube injection, comprising providing a capillary micro-extraction tube with extracting medium in it as an injector, passing a sample through the capillary micro-extraction tube, during which an analyte is extracted into an extracting medium inside the capillary micro-extraction tube; then, filling the capillary micro-extraction tube with an organic solvent and keeping the filling for a certain period of time, so that the extracted analyte is dissolved in the organic solvent inside the capillary micro-extraction tube to form an injection solution; finally, keeping one end of the capillary micro-extraction tube sealed and inserting the other end directly into an injection port of a gas chromatography, such that the injection solution is automatically ejected out from the capillary micro-extraction tube into the injection port.

    High-load explosion-proof driving device
    9.
    发明授权
    High-load explosion-proof driving device 有权

    公开(公告)号：US11155313B2

    公开(公告)日：2021-10-26

    申请号：US17200030

    申请日：2021-03-12

    申请人： Shandong Guoxing Intelligent Technology Co., Ltd. ,  Shandong Atu Robot Technology Co., Ltd.

    发明人： Terry Bao ,  Hongxiu Sun ,  Xibin Li ,  Wentao Liu ,  Tingting Guo ,  An Zheng ,  Lifu Duan ,  Linping Zhao

    IPC分类号： B62D55/125 ,  B62D55/06 ,  B25J5/00

    摘要： The present invention discloses a high-load explosion-proof driving device, including a servo motor, a reduction box, and a power take-off assembly. The power take-off assembly includes a step sleeve, a coupling, a wheel support sleeve, and a driving wheel. The step sleeve is connected to a robot body, the coupling is disposed through the step sleeve, and a bearing structure and a sealing structure are provided between the coupling and the step sleeve. The coupling is provided with a driving wheel key and a driving wheel sleeve on the left, the driving wheel key is connected to the driving wheel sleeve, and the driving wheel sleeve is connected to the driving wheel. The present invention has the following advantages: the driving device has a high protection capability, and at the same time, power transmitted from the reduction box is distributed, thereby improving loading capability of a mobile chassis.