Patents by Inventor Ruikang Yang
Ruikang Yang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11761572Abstract: A pipeline separation device for liquid-propellant rocket comprising a first flange pipeline, a second flange pipeline, a clamping unit, a push-and-pull unit and an actuation unit. The first flange pipeline and the second flange pipeline dock along a first direction, a docking end surface docking with each other is limited by the clamping unit, and end surfaces opposite to each other after docking of the first flange pipeline and the second flange pipeline are respectively used for connecting with different medium pipelines; the actuation unit is used for pushing the push-and-pull unit so that the clamping unit relieves limit on the docking end surface. Being provided with a clamping unit and an actuation unit, the pipeline separation device for liquid-propellant rocket is capable of quickly pushing the clamping unit out when the actuation unit works, thereby relieving the limit on the first flange pipeline and the second flange pipeline.Type: GrantFiled: June 10, 2020Date of Patent: September 19, 2023Assignee: SHAANXI LANDSPACE TECHNOLOGY CO. LTD.Inventor: Ruikang Yang
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Patent number: 11757695Abstract: Various embodiments of the present disclosure relate to transmitter systems, methods, and instructions for signal predistortion. The transmitter system includes an intermodulation distortion (IMD) filter module configured to filter a detected feedback signal (Yin) to generate a targeted filtered signal (Yout), a digital pre-distortion (DPD) coefficient estimation module configured to update signal generation coefficients based on comparing an input signal (Sin) with the targeted filtered signal (Yout), and a distortion compensation processing module configured to generate a pre-distorted signal (Uout) based on the input signal (Sin) using the updated signal generation coefficients.Type: GrantFiled: December 6, 2021Date of Patent: September 12, 2023Assignee: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.Inventors: Ruikang Yang, Michael Russo, Simon Hamparian
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Patent number: 11736335Abstract: Various embodiments of the present disclosure relate to transmitter systems, methods, and instructions for signal predistortion.Type: GrantFiled: December 6, 2021Date of Patent: August 22, 2023Assignee: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.Inventors: Ruikang Yang, Michael Russo, Simon Hamparian
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Patent number: 11733137Abstract: The invention discloses a slope one-way loading rutting test device, wherein the upper part of a loading frame is slidably connected with an upper cross beam of a frame through a loading frame rotating assembly, and a variable speed motor and a runner wheel are embedded in the lower part of the loading frame. The variable speed motor is in transmission connection with the runner wheel to realize one-way continuous loading of the runner wheel on a test piece. The lower part of a bearing frame is slidably connected with a lower cross beam of a frame through a bearing frame rotating assembly, a test piece mounting frame and a height adjusting device are sequentially embedded into the upper part of the bearing frame from top to bottom, and the height of the test piece mounting frame is adjusted through the height adjusting device.Type: GrantFiled: August 13, 2021Date of Patent: August 22, 2023Assignee: TONGJI UNIVERSITYInventors: Liping Liu, Lijun Sun, Ning Liu, Ruikang Yang, Huailei Cheng
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Publication number: 20230179466Abstract: Various embodiments of the present disclosure relate to transmitter systems, methods, and instructions for signal predistortion.Type: ApplicationFiled: December 6, 2021Publication date: June 8, 2023Applicant: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.Inventors: Ruikang YANG, Michael RUSSO, Simon HAMPARIAN
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Publication number: 20230179467Abstract: Various embodiments of the present disclosure relate to transmitter systems, methods, and instructions for signal predistortion. The transmitter system includes an intermodulation distortion (IMD) filter module configured to filter a detected feedback signal (Yin) to generate a targeted filtered signal (Yout), a digital pre-distortion (DPD) coefficient estimation module configured to update signal generation coefficients based on comparing an input signal (Sin) with the targeted filtered signal (Yout), and a distortion compensation processing module configured to generate a pre-distorted signal (Uout) based on the input signal (Sin) using the updated signal generation coefficients.Type: ApplicationFiled: December 6, 2021Publication date: June 8, 2023Applicant: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.Inventors: Ruikang YANG, Michael RUSSO, Simon HAMPARIAN
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Publication number: 20230179468Abstract: Various embodiments of the present disclosure relate to transmitter systems, methods, and instructions for signal predistortion. The transmitter system includes a primary digital predistortion (DPD) layer and a secondary DPD layer. The primary DPD layer includes a DPD coefficient estimation module configured to update primary signal generation coefficients based on comparing a secondary predistorted signal (Uout) with a detected feedback signal (Yout), and a primary distortion compensation processing module configured to generate a primary predistorted signal (Uout?) based on the secondary predistorted signal (Uout) using the updated primary signal generation coefficients.Type: ApplicationFiled: December 6, 2021Publication date: June 8, 2023Applicant: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.Inventors: Ruikang YANG, Michael RUSSO, Simon HAMPARIAN
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Publication number: 20220057310Abstract: The invention discloses a slope one-way loading rutting test device, wherein the upper part of a loading frame is slidably connected with an upper cross beam of a frame through a loading frame rotating assembly, and a variable speed motor and a runner wheel are embedded in the lower part of the loading frame. The variable speed motor is in transmission connection with the runner wheel to realize one-way continuous loading of the runner wheel on a test piece. The lower part of a bearing frame is slidably connected with a lower cross beam of a frame through a bearing frame rotating assembly, a test piece mounting frame and a height adjusting device are sequentially embedded into the upper part of the bearing frame from top to bottom, and the height of the test piece mounting frame is adjusted through the height adjusting device.Type: ApplicationFiled: August 13, 2021Publication date: February 24, 2022Inventors: LIPING LIU, LIJUN SUN, NING LIU, RUIKANG YANG, HUAILEI CHENG
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Publication number: 20220010912Abstract: A pipeline separation device for liquid-propellant rocket comprising a first flange pipeline, a second flange pipeline, a clamping unit, a push-and-pull unit and an actuation unit. The first flange pipeline and the second flange pipeline dock along a first direction, a docking end surface docking with each other is limited by the clamping unit, and end surfaces opposite to each other after docking of the first flange pipeline and the second flange pipeline are respectively used for connecting with different medium pipelines; the actuation unit is used for pushing the push-and-pull unit so that the clamping unit relieves limit on the docking end surface. Being provided with a clamping unit and an actuation unit, the pipeline separation device for liquid-propellant rocket is capable of quickly pushing the clamping unit out when the actuation unit works, thereby relieving the limit on the first flange pipeline and the second flange pipeline.Type: ApplicationFiled: June 10, 2020Publication date: January 13, 2022Inventor: Ruikang YANG
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Patent number: 9190967Abstract: Apparatus and method embodiments are provided for improving power efficiency in an outphasing amplifier with a non-isolating combiner. The embodiments include reducing the driving power to two power amplifiers (PAs) of the amplifier circuit in the low input signal power region in an asymmetric manner between the two PAs. An embodiment method includes receiving, at a signal decomposer, an input signal, detecting a power amplitude of the input signal, and determining whether the input signal corresponds to one of a plurality of operation modes according to the detected power amplitude of the input signal and a plurality of power thresholds corresponding to the operation modes. Upon determining that the power amplitude of the input signal corresponds to a first mode from the operation modes, the input signal is decomposed into two component signals including at least one signal that has a reduced and scaled amplitude proportional to the input signal.Type: GrantFiled: March 4, 2014Date of Patent: November 17, 2015Assignee: Futurewei Technologies Inc.Inventors: Zhengxiang Ma, Ruikang Yang, Munawar Kermalli
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Publication number: 20140266464Abstract: Apparatus and method embodiments are provided for improving power efficiency in an outphasing amplifier with a non-isolating combiner. The embodiments include reducing the driving power to two power amplifiers (PAs) of the amplifier circuit in the low input signal power region in an asymmetric manner between the two PAs. An embodiment method includes receiving, at a signal decomposer, an input signal, detecting a power amplitude of the input signal, and determining whether the input signal corresponds to one of a plurality of operation modes according to the detected power amplitude of the input signal and a plurality of power thresholds corresponding to the operation modes. Upon determining that the power amplitude of the input signal corresponds to a first mode from the operation modes, the input signal is decomposed into two component signals including at least one signal that has a reduced and scaled amplitude proportional to the input signal.Type: ApplicationFiled: March 4, 2014Publication date: September 18, 2014Applicant: FutureWei Technologies, Inc.Inventors: Zhengxiang Ma, Ruikang Yang, Munawar Kermalli
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Patent number: 7139327Abstract: Pre-distortion, whose magnitude—and preferably phase—are frequency-dependent, is applied to an input signal in order to reduce spurious emissions resulting from subsequent amplification of the signal. In preferred embodiments, the pre-distortion technique of the present invention is implemented in combination with the (frequency-independent) magnitude and phase pre-distortion technique described in U.S. patent application Ser. No. 09/395,490 (“the '490 application”), where the frequency-dependent pre-distortion corresponds to amplifier distortion that has a magnitude that is proportional to the frequency offset from the carrier frequency and a phase shift of ±90° on either side of the carrier frequency. The frequency-dependent pre-distortion is generated by differentiating waveforms corresponding to pre-distortion parameters with respect to time and then applying the resulting differentiated pre-distortion parameters to the input signal.Type: GrantFiled: August 13, 2002Date of Patent: November 21, 2006Assignee: Andrew CorporationInventors: George P. Vella-Coleiro, Ruikang Yang
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Patent number: 6963243Abstract: Current and previous input signal power measures are used to generate a combined index value that is applied to one or more composite look-up tables (e.g., an I LUT and a Q LUT) to retrieve one or more pre-distortion parameters (e.g., I and Q). In one embodiment, a combined index value is generated by concatenating current and previous power measures, where each composite LUT maps all possible combinations of the current and previous power measures to the corresponding pre distortion parameters values. By using a composite LUT for each of I and Q, the overall signal processing time of the pre-distortion processing can be greatly reduced relative to the prior art, resulting in a significantly smaller RF delay line used to delay the input signal and thereby providing a less costly and more efficient amplifier system.Type: GrantFiled: October 22, 2003Date of Patent: November 8, 2005Assignee: Andrew CorporationInventors: Robert E. Johnson, Ruikang Yang
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Publication number: 20050088230Abstract: Current and previous input signal power measures are used to generate a combined index value that is applied to one or more composite look-up tables (e.g., an I LUT and a Q LUT) to retrieve one or more pre-distortion parameters (e.g., I and Q). In one embodiment, a combined index value is generated by concatenating current and previous power measures, where each composite LUT maps all possible combinations of the current and previous power measures to the corresponding pre-distortion parameters values. By using a composite LUT for each of I and Q, the overall signal processing time of the pre-distortion processing can be greatly reduced relative to the prior art, resulting in a significantly smaller RF delay line used to delay the input signal and thereby providing a less costly and more efficient amplifier system.Type: ApplicationFiled: October 22, 2003Publication date: April 28, 2005Applicant: Andrew CorporationInventors: Robert Johnson, Ruikang Yang
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Publication number: 20030227981Abstract: Pre-distortion, whose magnitude—and preferably phase—are frequency-dependent, is applied to an input signal in order to reduce spurious emissions resulting from subsequent amplification of the signal. In preferred embodiments, the pre-distortion technique of the present invention is implemented in combination with the (frequency-independent) magnitude and phase pre-distortion technique described in U.S. patent application Ser. No. 09/395,490 (“the '490 application”), where the frequency-dependent pre-distortion corresponds to amplifier distortion that has a magnitude that is proportional to the frequency offset from the carrier frequency and a phase shift of ±90° on either side of the carrier frequency. The frequency-dependent pre-distortion is generated by differentiating waveforms corresponding to pre-distortion parameters with respect to time and then applying the resulting differentiated pre-distortion parameters to the input signal.Type: ApplicationFiled: August 13, 2002Publication date: December 11, 2003Applicant: Andrew Corporation, a Delaware CorporationInventors: George P. Vella-Coleiro, Ruikang Yang