Patents by Inventor Yuanjun Xu
Yuanjun Xu 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: 11923879Abstract: A radio unit for TDD multi-band operation in a wireless communication system is disclosed. The radio unit comprises a transmitting power amplifier for multi-band operation; one or more receiving amplifiers for multi-band operation and an antenna element. The radio unit further comprises one or more switch networks coupled in parallel between the power amplifier and the antenna element. Each of the one or more switch networks comprises one or more shunt switches coupled between an output of the transmitting power amplifier and a signal ground. Each of the one or more switch networks is configured to operate at a certain frequency band in transmitting or receiving mode and is controlled separately by a switching control unit based on un-synchronized TDD time slots configured according to user data traffic scheduling requirements.Type: GrantFiled: June 19, 2018Date of Patent: March 5, 2024Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Yuanjun Xu, Bo Göransson
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Patent number: 11774380Abstract: A diffraction analysis device and a method for a full-field X-ray fluorescence imaging analysis are disclosed. The device includes a switching assembly, collimation assemblies, an X-ray source, an X-ray detector, a laser indicator, and a computer control system. The switching assembly combines with the collimation assemblies to achieve a functional effect that is previously achieved by two different types of devices through only one device by changing the positioning layout of the X-ray source and the X-ray detector. The full-field X-ray fluorescence imaging analysis can be realized, and the crystal phase composition information and the element distribution imaging information of the sample can be quickly obtained through the same device without scanning, which not only greatly improves the utilization rate of each assembly in the device, reduces the assemblies cost of the device, makes the device structure more compact, but also greatly improves the analysis efficiency and detection accuracy.Type: GrantFiled: February 8, 2023Date of Patent: October 3, 2023Assignee: SICHUAN UNIVERSITYInventors: Yuanjun Xu, Ze He, Peng Wang, Ning Huang, Zhu An
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Patent number: 11528732Abstract: Disclosed is a method performed by a radio access network node of a wireless communication network for handling transmission of LTE or NR signals as well as NB-IoT signals to wireless communication devices over a carrier comprising a plurality of PRBs. The method comprises scheduling the carrier so that at least one of the PRBs is to be used for transmission of NB-IoT signals, called NB-IoT PRBs, and some of the PRBs are to be used for transmission of LTE or NR signals, called LTE PRBs.Type: GrantFiled: May 15, 2018Date of Patent: December 13, 2022Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Zhongwen Li, Youping Su, Yuanjun Xu
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Publication number: 20210211265Abstract: A radio unit for TDD multi-band operation in a wireless communication system is disclosed. The radio unit comprises a transmitting power amplifier for multi-band operation; one or more receiving amplifiers for multi-band operation and an antenna element. The radio unit further comprises one or more switch networks coupled in parallel between the power amplifier and the antenna element. Each of the one or more switch networks comprises one or more shunt switches coupled between an output of the transmitting power amplifier and a signal ground. Each of the one or more switch networks is configured to operate at a certain frequency band in transmitting or receiving mode and is controlled separately by a switching control unit based on un-synchronized TDD time slots configured according to user data traffic scheduling requirements.Type: ApplicationFiled: June 19, 2018Publication date: July 8, 2021Inventors: Yuanjun XU, Bo GĂ–RANSSON
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Publication number: 20210175858Abstract: A method for performing transmission and reception of signals in a radio transceiver arrangement includes creating a first analogue signal to be transmitted based on a digitally predistorted digital input signal and converting a second analogue signal into a digital output signal. The second analogue signal is a combination of a received signal and a transmitter observation signal. The received signal is based on a radio signal received by the radio transceiver arrangement. The transmitter observation signal is based on a tapped signal of the first analogue signal. The digital predistortion of the digital input signal is adapted based on the part of the output digital signal that corresponds to the transmitter observation signal.Type: ApplicationFiled: July 3, 2018Publication date: June 10, 2021Inventors: Youping SU, Yuanjun XU, Zhongwen LI
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Publication number: 20210105807Abstract: Disclosed is a method performed by a radio access network node of a wireless communication network for handling transmission of LTE or NR signals as well as NB-IoT signals to wireless communication devices over a carrier comprising a plurality of PRBs. The method comprises scheduling the carrier so that at least one of the PRBs is to be used for transmission of NB-IoT signals, called NB-IoT PRBs, and some of the PRBs are to be used for transmission of LTE or NR signals, called LTE PRBs.Type: ApplicationFiled: May 15, 2018Publication date: April 8, 2021Inventors: Zhongwen LI, Youping SU, Yuanjun XU
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Publication number: 20200263763Abstract: Provided is a drive train for an electric hydraulic construction machine. The drive train comprises a drive system with an electric motor and a flywheel arrangement connected to the system. The drive system further comprises a first output element protruding from the electric motor and a hydraulic pump provided on a side of the electric motor from which the first output element protrudes.Type: ApplicationFiled: June 6, 2019Publication date: August 20, 2020Inventors: Wen Cai, Yuanjun Xu, Guanghui Jing, Mianjian Huang
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Patent number: 10567015Abstract: Disclosed is a method and a radio network node for compensating for local oscillator pulling or pushing. The method comprises determining, in a digital domain, a correction phase for the local oscillator to offset a phase error caused by the local oscillator pulling or pushing. The method also comprises correcting a phase of the baseband signal in the digital domain using the correction phase to compensate for the local oscillator pulling or pushing With the proposed method and radio network node, the phase error caused by the local oscillator pulling or pushing could be diminished due to phase correction in the digital domain.Type: GrantFiled: January 5, 2015Date of Patent: February 18, 2020Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Yuanjun Xu, Youping Su
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Patent number: 10035701Abstract: There is provided a method for forming a composite cavity and a composite cavity formed using the method.Type: GrantFiled: November 5, 2014Date of Patent: July 31, 2018Assignee: Advanced Semiconductor Manufacturing Co. Ltd.Inventors: Yuanjun Xu, Yilin Yan, Weijia Xue
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Publication number: 20180019771Abstract: Disclosed is a method and a radio network node for compensating for local oscillator pulling or pushing. The method comprises determining, in a digital domain, a correction phase for the local oscillator to offset a phase error caused by the local oscillator pulling or pushing. The method also comprises correcting a phase of the baseband signal in the digital domain using the correction phase to compensate for the local oscillator pulling or pushing With the proposed method and radio network node, the phase error caused by the local oscillator pulling or pushing could be diminished due to phase correction in the digital domain.Type: ApplicationFiled: January 5, 2015Publication date: January 18, 2018Inventors: Yuanjun Xu, Youping Su
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Publication number: 20170044006Abstract: There is provided a method for forming a composite cavity and a composite cavity formed using the method.Type: ApplicationFiled: November 5, 2014Publication date: February 16, 2017Inventors: Yuanjun Xu, Yilin Yan, Weijia Xue
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Patent number: 9313073Abstract: The invention discloses an adaptive phase shift method in a multi-carrier system, comprising: generating a group of one or more new phase values for corresponding one or more phase shift carriers, PSCs, based on quantization phase values; calculating and comparing a backward maximum power in an evaluation path with the group of one or more new phase values in one timeslot and a forward maximum power in a working path with current phase values in the timeslot; and adjusting phase of the PSCs based on the group of one or more new phase values if the calculated backward maximum power is less than the calculated forward maximum power. An adaptive phase shift apparatus is also disclosed. With the invention, complexity of the implementation is reduced and a small DPS block resource, low Hardware cost, low power consumption is also achieved.Type: GrantFiled: January 12, 2012Date of Patent: April 12, 2016Assignee: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)Inventors: Yuanjun Xu, Tao Gu, Huaisong Zhu, Yanqiang Li, Jinsong Yang
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Publication number: 20140355727Abstract: The invention discloses an adaptive phase shift method in a multi-carrier system, comprising: generating a group of one or more new phase values for corresponding one or more phase shift carriers, PSCs, based on quantization phase values; calculating and comparing a backward maximum power in an evaluation path with the group of one or more new phase values in one timeslot and a forward maximum power in a working path with current phase values in the timeslot; and adjusting phase of the PSCs based on the group of one or more new phase values if the calculated backward maximum power is less than the calculated forward maximum power. An adaptive phase shift apparatus is also disclosed. With the invention, complexity of the implementation is reduced and a small DPS block resource, low Hardware cost, low power consumption is also achieved.Type: ApplicationFiled: January 12, 2012Publication date: December 4, 2014Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)Inventors: Yuanjun Xu, Tao Gu, Huaisong Zhu, Yanqiang Li, Jinsong Yang
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Patent number: 7456526Abstract: A track rail is formed in a channel-like configuration while having a guide passage for sliders. A table structure that moves within the guide passage includes: a pair of sliders that move forwards and backwards within the guide passage; and a connecting top board connecting those sliders to each other with a predetermined interval therebetween and provided with a mounting surface for a movable member. An armature constituting a linear motor is received between the pair of sliders, and field magnets constituting the linear motor are arranged in the track rail so as to face the guide passage. The armature and the field magnets, which constitute the linear motor, are completely integrated with the table structure and the track rail, which constitute a linear guide, and are entirely contained inside the linear guide.Type: GrantFiled: March 22, 2004Date of Patent: November 25, 2008Assignee: THK Co., Ltd.Inventors: Akihiro Teramachi, Toshiyuki Aso, Yoshinobu Tanaka, Hiroshi Kaneshige, Yuanjun Xu
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Patent number: D1012981Type: GrantFiled: November 16, 2021Date of Patent: January 30, 2024Assignee: SONGLING ROBOT (SHENZHEN) CO., LTD.Inventors: Shaojie Chen, Jidong Wei, YuanJun Xu, Yongqing Li