Patents by Inventor Aihua WU
Aihua WU 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: 11971451Abstract: A method includes: constructing an on-wafer calibration piece model set that includes one or more on-wafer calibration piece models, where each of the one or more on-wafer calibration piece models has a corresponding on-wafer calibration piece; selecting an on-wafer calibration piece model from the on-wafer calibration piece model set; measuring the on-wafer calibration piece utilizing an on-wafer S parameter measurement system that is calibrated using a multi-thread TRL calibration method in a Terahertz frequency band, to obtain an S parameter of the on-wafer calibration piece; and calculating a plurality of different parameters that represent crosstalk of calibration pieces in the on-wafer calibration piece model, according to an admittance calculated according to the S parameter and an admittance formula corresponding to the on-wafer calibration piece model.Type: GrantFiled: December 14, 2021Date of Patent: April 30, 2024Assignee: The 13th Research Institute of China Electronics Technology Group CorporationInventors: Aihua Wu, Yibang Wang, Faguo Liang, Chen Liu, Ye Huo, Peng Luan, Jing Sun, Yanli Li
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Patent number: 11733298Abstract: The present application provides two-port on-wafer calibration piece circuit models and a method for determining parameters. The method includes: measuring a single-port on-wafer calibration piece circuit model corresponding to a first frequency band to obtain a first S parameter; calculating, according to the first S parameter, an intrinsic capacitance value of a two-port on-wafer calibration piece circuit model corresponding to the single-port on-wafer calibration piece circuit model; measuring the two-port on-wafer calibration piece circuit model corresponding to the terahertz frequency band to obtain a second S parameter; and calculating a parasitic capacitance value and a parasitic resistance value of the two-port on-wafer calibration piece circuit model according to the second S parameter and the intrinsic capacitance value.Type: GrantFiled: December 14, 2021Date of Patent: August 22, 2023Assignee: The 13th Research Institute of China Electronics Technology Group CorporationInventors: Yibang Wang, Aihua Wu, Faguo Liang, Chen Liu, Ye Huo, Peng Luan, Jing Sun, Yanli Li
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Publication number: 20230051442Abstract: A method for calibrating crosstalk errors in a system for measuring on-wafer S parameters and an electronic device are provided. The method includes two parts. The first part is the pre-calibration part, which obtain eight error terms of an on-wafer S parameter measurement system by using a thru calibration standard, two defined load calibration standards, two pairs of undefined reflect calibration standards, and the reciprocity properties of a passive reciprocal element. The first part performs pre-calibration on an uncalibrated system according to the eight error terms. The second part uses the pre-calibrated system to obtain the crosstalk errors of the measurement system, and performs a further calibration on the pre-calibrated system according to the crosstalk errors.Type: ApplicationFiled: August 18, 2022Publication date: February 16, 2023Inventors: Aihua Wu, Xingchang Fu, Yuan Fang, Yibang Wang, Ye Huo, Faguo Liang, Chen Liu, Peng Luan, Senfeng Xu, Xiaohua Chen, Xiaoyun Zhang
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Publication number: 20230036090Abstract: A three-dimensional displacement compensation method is provided. The method includes an obtaining step, a transforming step, a first determining step, a first calculating step and a compensating step. The obtaining step includes obtaining a current image of a measured element captured by a microscopic thermoreflectance thermography device. The transforming step includes two sub-steps. One sub-step uses Fourier transform to calculate a reference image to obtain a first result, and the other sub-step uses Fourier transform to calculate the current image to obtain a second result. The first determining step includes determining a peak point coordinate and a fitting diameter of a point spread function of an optical system of the device. The first calculating step includes calculating a three-dimensional displacement of the position to be compensated relative to the reference position. The compensating step compensates the position to be compensated.Type: ApplicationFiled: July 7, 2022Publication date: February 2, 2023Inventors: Yan Liu, Aihua Wu, Wei Wang, Yuwei Zhai, Hao Li, Chen Ding, Xiaodong Jing, Baicheng Sheng
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Patent number: 11385175Abstract: A calibration method includes: acquiring eight error models obtained after a preliminary calibration of a Terahertz frequency band system; based on the eight error models, determining a first mathematical model according to a first S parameter related to a first calibration piece, the first mathematical model comprising parallel crosstalk terms between probes, and determining a second mathematical model according to a second S parameter related to a second calibration piece, the second mathematical model comprising series crosstalk terms between the probes; determining a third mathematical model according to a third S parameter related to a measured piece; and solving and obtaining a Z parameter of the measured piece based on the first mathematical model, the second mathematical model and the third mathematical model, and acquiring an S parameter of the measured piece according to the Z parameter of the measured piece.Type: GrantFiled: December 16, 2020Date of Patent: July 12, 2022Assignee: THE 13TH RESEARCH INSTITUTE OF CHINA ELECTRONICS TECHNOLOGY GROUP CORPORATIONInventors: Yibang Wang, Aihua Wu, Faguo Liang, Chen Liu, Peng Luan, Ye Huo, Jing Sun, Yanli Li
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Patent number: 11340286Abstract: The present application is applicable to the technical field of terahertz on-wafer measurement, and provides a new on-wafer S-parameter calibration method and device. The method includes: performing two-port calibration on a waveguide end face when a probe is not connected to a test system; performing one-port calibration on each of two probe end faces when the probe is connected to the test system; and fabricating a crosstalk calibration standard equal to a device under test in length on a substrate of the device under test, and correct a crosstalk error of the test system according to the crosstalk calibration standard. The present application can realize accurate characterization and correction of crosstalk error in a high-frequency on-wafer S-parameter calibration process, and improve the accuracy of error correction in high-frequency on-wafer S-parameter measurement.Type: GrantFiled: December 29, 2018Date of Patent: May 24, 2022Assignee: THE 13TH RESEARCH INSTITUTE OF CHINA ELECTRONICSInventors: Aihua Wu, Chong Li, Chen Liu, Yibang Wang, Xingchang Fu, Faguo Liang, Xiuwei Tian, Yanan Liu, Jian Cao
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Publication number: 20220107361Abstract: The present application provides two-port on-wafer calibration piece circuit models and a method for determining parameters. The method includes: measuring a single-port on-wafer calibration piece circuit model corresponding to a first frequency band to obtain a first S parameter; calculating, according to the first S parameter, an intrinsic capacitance value of a two-port on-wafer calibration piece circuit model corresponding to the single-port on-wafer calibration piece circuit model; measuring the two-port on-wafer calibration piece circuit model corresponding to the terahertz frequency band to obtain a second S parameter; and calculating a parasitic capacitance value and a parasitic resistance value of the two-port on-wafer calibration piece circuit model according to the second S parameter and the intrinsic capacitance value.Type: ApplicationFiled: December 14, 2021Publication date: April 7, 2022Inventors: Yibang Wang, Aihua Wu, Faguo Liang, Chen Liu, Ye Huo, Peng Luan, Jing Sun, Yanli Li
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Publication number: 20220099736Abstract: A method includes: constructing an on-wafer calibration piece model set that includes one or more on-wafer calibration piece models, where each of the one or more on-wafer calibration piece models has a corresponding on-wafer calibration piece; selecting an on-wafer calibration piece model from the on-wafer calibration piece model set; measuring the on-wafer calibration piece utilizing an on-wafer S parameter measurement system that is calibrated using a multi-thread TRL calibration method in a Terahertz frequency band, to obtain an S parameter of the on-wafer calibration piece; and calculating a plurality of different parameters that represent crosstalk of calibration pieces in the on-wafer calibration piece model, according to an admittance calculated according to the S parameter and an admittance formula corresponding to the on-wafer calibration piece model.Type: ApplicationFiled: December 14, 2021Publication date: March 31, 2022Inventors: Aihua Wu, Yibang Wang, Faguo Liang, Chen Liu, Ye Huo, Peng Luan, Jing Sun, Yanli Li
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Patent number: 11275103Abstract: The disclosure provides a calibration method, a system and a device of an on-wafer S parameter of a vector network analyzer. The method comprises the steps of: acquiring a first parameter of a first crosstalk calibration piece measured by the vector network analyzer; obtaining a main crosstalk error term based on the first parameter of the first crosstalk calibration piece and a calibration parameter of the first crosstalk calibration piece; acquiring a second parameter of a second crosstalk calibration piece measured by the vector network analyzer based on the main crosstalk error term; and obtaining a secondary crosstalk error term based on the second parameter of the second crosstalk calibration piece and a calibration parameter of the second crosstalk calibration piece, wherein the main crosstalk error term and the secondary crosstalk error term are used for calibrating the vector network analyzer.Type: GrantFiled: September 19, 2020Date of Patent: March 15, 2022Assignee: The 13th Research Institute of China Electronics Technology Group CorporationInventors: Yibang Wang, Aihua Wu, Faguo Liang, Chen Liu, Xuefeng Zou, Zhifu Hu, Jian Cao, Ye Huo
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Publication number: 20220003811Abstract: The present application is applicable to the technical field of terahertz on-wafer measurement, and provides a new on-wafer S-parameter calibration method and device. The method includes: performing two-port calibration on a waveguide end face when a probe is not connected to a test system; performing one-port calibration on each of two probe end faces when the probe is connected to the test system; and fabricating a crosstalk calibration standard equal to a device under test in length on a substrate of the device under test, and correct a crosstalk error of the test system according to the crosstalk calibration standard. The present application can realize accurate characterization and correction of crosstalk error in a high-frequency on-wafer S-parameter calibration process, and improve the accuracy of error correction in high-frequency on-wafer S-parameter measurement.Type: ApplicationFiled: December 29, 2018Publication date: January 6, 2022Inventors: Aihua WU, Chong LI, Chen LIU, Yibang WANG, Xingchang FU, Faguo LIANG, Xiuwei TIAN, Yanan LIU, Jian CAO
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Publication number: 20210181102Abstract: A calibration method includes: acquiring eight error models obtained after a preliminary calibration of a Terahertz frequency band system; based on the eight error models, determining a first mathematical model according to a first S parameter related to a first calibration piece, the first mathematical model comprising parallel crosstalk terms between probes, and determining a second mathematical model according to a second S parameter related to a second calibration piece, the second mathematical model comprising series crosstalk terms between the probes; determining a third mathematical model according to a third S parameter related to a measured piece; and solving and obtaining a Z parameter of the measured piece based on the first mathematical model, the second mathematical model and the third mathematical model, and acquiring an S parameter of the measured piece according to the Z parameter of the measured piece.Type: ApplicationFiled: December 16, 2020Publication date: June 17, 2021Inventors: Yibang Wang, Aihua Wu, Faguo Liang, Chen Liu, Peng Luan, Ye Huo, Jing Sun, Yanli Li
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Publication number: 20210003622Abstract: The disclosure provides a calibration method, a system and a device of an on-wafer S parameter of a vector network analyzer. The method comprises the steps of: acquiring a first parameter of a first crosstalk calibration piece measured by the vector network analyzer; obtaining a main crosstalk error term based on the first parameter of the first crosstalk calibration piece and a calibration parameter of the first crosstalk calibration piece; acquiring a second parameter of a second crosstalk calibration piece measured by the vector network analyzer based on the main crosstalk error term; and obtaining a secondary crosstalk error term based on the second parameter of the second crosstalk calibration piece and a calibration parameter of the second crosstalk calibration piece, wherein the main crosstalk error term and the secondary crosstalk error term are used for calibrating the vector network analyzer.Type: ApplicationFiled: September 19, 2020Publication date: January 7, 2021Inventors: Yibang Wang, Aihua Wu, Faguo Liang, Chen Liu, Xuefeng Zou, Zhifu Hu, Jian Cao, Ye Huo
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Patent number: 9725521Abstract: The present invention discloses a human-derived insecticidal gene and insecticidal peptide encoded by the same and application thereof. The nucleotide sequence of the human-derived insecticidal gene is as represented by SEQ ID NO.1. The amino acid sequence of the insecticidal peptide encoded by this gene is as represented by SEQ ID NO.2. The insecticidal peptide may be expressed through prokaryotic system. The primary culture has binding activity to Cnaphalocrocis medinalis midgut peritrophic membrane specific receptor BBMV. It is obtained without animal immunization and has a short production cycle and a small amino acid sequence. It is suitable for in vitro mass production and may lower the safety risks resulting from wide use of existing Bt toxins and even might substitute Bt to biologically control agricultural pests in the future. It has important scientific and practical significance to reducing the use of insecticides.Type: GrantFiled: January 9, 2015Date of Patent: August 8, 2017Assignee: JIANGSU ACADEMY OF AGRICULTURAL SCIENCESInventors: Xianjin Liu, Yuan Liu, Yajing Xie, Aihua Wu, Xiao Zhang, Chongxin Xu, Yanyan Zhao, Jianfeng Zhong
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Publication number: 20170088633Abstract: The present invention discloses a human-derived insecticidal gene and insecticidal peptide encoded by the same and application thereof. The nucleotide sequence of the human-derived insecticidal gene is as represented by SEQ ID NO.1. The amino acid sequence of the insecticidal peptide encoded by this gene is as represented by SEQ ID NO.2. The insecticidal peptide may be expressed through prokaryotic system. The primary culture has binding activity to Cnaphalocrocis medinalis midgut peritrophic membrane specific receptor BBMV. It is obtained without animal immunization and has a short production cycle and a small amino acid sequence. It is suitable for in vitro mass production and may lower the safety risks resulting from wide use of existing Bt toxins and even might substitute Bt to biologically control agricultural pests in the future. It has important scientific and practical significance to reducing the use of insecticides.Type: ApplicationFiled: January 9, 2015Publication date: March 30, 2017Applicant: JIANGSU ACADEMY OF AGRICULTURAL SCIENCESInventors: Xianjin LIU, Yuan LIU, Yajing XIE, Aihua WU, Xiao ZHANG, Chongxin XU, Yanyan ZHAO, Jianfeng ZHONG