Patents by Inventor JIAQIANG ZHU
JIAQIANG ZHU 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: 11973273Abstract: Disclosed is a radiator assembly configured to operate in the range of 3.4-4.2 GHz. The radiator assembly comprises a folded dipole with four dipole arms that radiate in two orthogonal polarization planes, whereby the signal of each polarization orientation is radiated by two opposite radiator arms that radiate the signal 180 degrees out of phase from each other. The radiator assembly has a balun structure that includes a balun trace that conductively couples to a ground element on the same side of the balun stem plate. The combination of the shape of the folded dipole and the balun structure reduces cross polarization between the two polarization states and maintains strong phase control between the opposing radiator arms.Type: GrantFiled: February 13, 2023Date of Patent: April 30, 2024Assignee: John Mezzalingua Associates, LLCInventors: Niranjan Sundararajan, Jiaqiang Zhu
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Patent number: 11973282Abstract: Disclosed is a midband dipole for use in a multiband antenna. The midband dipole has four folded dipoles, each of which is coupled to a decoupling circuit that has two capacitance points. The disclosed decoupling circuit configuration mitigates common mode resonance with nearby lowband dipoles, further preventing cross polarization in the midband.Type: GrantFiled: March 7, 2023Date of Patent: April 30, 2024Assignee: John Mezzalingua Associates, LLCInventors: Jiaqiang Zhu, Niranjan Sundararajan, Wengang Chen
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Patent number: 11957743Abstract: A Streptococcus suis (S. suis) vaccine is provided. For the S. suis vaccine, an antigen is a protein with an amino acid sequence shown in SEQ ID NO: 2. A preparation method of the S. suis vaccine is provided, including the following steps: mixing a white oil and aluminum stearate to obtain a white oil adjuvant; adding poly sorbate 80 to an aqueous solution of the protein with the amino acid sequence shown in SEQ ID NO: 2, and thoroughly mixing to obtain an antigen solution; and mixing the antigen solution with the white oil adjuvant according to a volume ratio of (0.5-1.5):2, and emulsifying to obtain the S. suis vaccine. An animal immunized with the S. suis vaccine of the present disclosure can effectively resist the attack of S. suis serotype 2, 3, and 31, with a vaccine protection rate as high as 100%.Type: GrantFiled: June 10, 2022Date of Patent: April 16, 2024Assignee: JIANGSU ACADEMY OF AGRICULTURAL SCIENCESInventors: Qi Xiao, Xialing Zhao, Hongjie Fan, Xiaoguo Huang, Wenxian Qian, Libin Wen, Haodan Zhu, Yanxiu Ni, Junming Zhou, Dandan Wang, Jiaqiang Niu, Kongwang He
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Patent number: 11817629Abstract: Disclosed is a decoupling dipole structure that renders a midband dipole effectively transparent to a nearby lowband dipole. This not only improves the beam quality in the lowband without sacrificing beam quality in the midband, it also enables different lowband dipoles to be employed to customize the lowband performance of the multiband antenna without requiring a redesign of the midband dipoles or of the array face.Type: GrantFiled: December 16, 2021Date of Patent: November 14, 2023Assignee: John Mezzalingua Associates, LLCInventors: Jiaqiang Zhu, Wengang Chen, Niranjan Sundararajan
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Publication number: 20230361472Abstract: A low band dipole for a dense multiband antenna array has a plurality of dipole arms. The dipole arms have a coupling plate disposed on a first side of a PCB and a conductive trace pattern disposed on a second side of the PCB. The conductive trace pattern has a plurality of resonator block structures that are coupled together by a phase shifting trace along a first edge of the conductive trace pattern and a bandwidth compensating disposed along a second edge of the conductive trace pattern.Type: ApplicationFiled: May 5, 2023Publication date: November 9, 2023Inventors: Jiaqiang Zhu, Niranjan Sundararajan, Wengang Chen
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Publication number: 20230299505Abstract: Disclosed is a radiator assembly configured to operate in the range of 3.4-4.2 GHz. The radiator assembly comprises a folded dipole with four dipole arms that radiate in two orthogonal polarization planes, whereby the signal of each polarization orientation is radiated by two opposite radiator arms that radiate the signal 180 degrees out of phase from each other. The radiator assembly has a balun structure that includes a balun trace that conductively couples to a ground element on the same side of the balun stem plate. The combination of the shape of the folded dipole and the balun structure reduces cross polarization between the two polarization states and maintains strong phase control between the opposing radiator arms.Type: ApplicationFiled: February 13, 2023Publication date: September 21, 2023Inventors: Niranjan SUNDARARAJAN, Jiaqiang ZHU
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Publication number: 20230299485Abstract: A lowband radiator has four dipole arms and a central region that is centered at the intersection of the dipole arms. Each of the dipole arms has a sequence of capacitive and inductive structures and a pair of high gain wings that are disposed in the dipole central region. In one embodiment of the lowband radiator, each dipole arm has a gap within the central region that is colinear with the dipole arm. The dipoles provide for improved isolation from nearby midband radiators while providing high gain.Type: ApplicationFiled: January 25, 2023Publication date: September 21, 2023Inventors: Niranjan Sundararajan, Wengang Chen, Jiaqiang Zhu
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Patent number: 11737566Abstract: A connection structure for a composite backrest and a method for making the same are provided. The connection structure includes two frames, a backrest body, and metal bushings. The metal bushings include a group of left metal bushings and a group of right metal bushings. The two frames are respectively fixed to the left side and the right side of the backrest body by the left metal bushings and the right metal bushings. The method includes: punching the backrest body and the frames; placing the frames into the backrest body; processing the metal bushings; sandblasting or sanding the external surface of the metal bushing; coating a configured structural adhesive on the metal bushing, and oppositely bonding the metal bushing; fixing the bonded metal bushing by a tool; and placing the fixed metal bushing, the composite backrest and the two frames into a drying oven for heating.Type: GrantFiled: January 14, 2021Date of Patent: August 29, 2023Assignee: SHANGHAI CEDAR COMPOSITES TECHNOLOGY CO., LTD.Inventors: Yi Peng, Jianlan Luo, Jiaqiang Zhu, Nannan Yu, Hao Zhang
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Publication number: 20230208039Abstract: Disclosed is a midband dipole for use in a multiband antenna. The midband dipole has four folded dipoles, each of which is coupled to a decoupling circuit that has two capacitance points. The disclosed decoupling circuit configuration mitigates common mode resonance with nearby lowband dipoles, further preventing cross polarization in the midband.Type: ApplicationFiled: March 7, 2023Publication date: June 29, 2023Inventors: Jiaqiang Zhu, Niranjan Sundararajan, Wengang Chen
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Patent number: 11605893Abstract: Disclosed is a midband dipole for use in a multiband antenna. The midband dipole has four folded dipoles, each of which is coupled to a decoupling circuit that has two capacitance points. The disclosed decoupling circuit configuration mitigates common mode resonance with nearby lowband dipoles, further preventing cross polarization in the midband.Type: GrantFiled: March 8, 2022Date of Patent: March 14, 2023Assignee: John Mezzalingua Associates, LLCInventors: Jiaqiang Zhu, Niranjan Sundararajan, Wengang Chen
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Patent number: 11581660Abstract: Disclosed is a radiator assembly configured to operate in the range of 3.4-4.2 GHz. The radiator assembly comprises a folded dipole with four dipole arms that radiate in two orthogonal polarization planes, whereby the signal of each polarization orientation is radiated by two opposite radiator arms that radiate the signal 180 degrees out of phase from each other. The radiator assembly has a balun structure that includes a balun trace that conductively couples to a ground element on the same side of the balun stem plate. The combination of the shape of the folded dipole and the balun structure reduces cross polarization between the two polarization states and maintains strong phase control between the opposing radiator arms.Type: GrantFiled: September 8, 2021Date of Patent: February 14, 2023Assignee: John Mezzalingua Associates, LLCInventors: Niranjan Sundararajan, Jiaqiang Zhu
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Publication number: 20220400867Abstract: A connection structure for a composite backrest and a method for making the same are provided. The connection structure includes two frames, a backrest body, and metal bushings. The metal bushings include a group of left metal bushings and a group of right metal bushings. The two frames are respectively fixed to the left side and the right side of the backrest body by the left metal bushings and the right metal bushings. The method includes: punching the backrest body and the frames; placing the frames into the backrest body; processing the metal bushings; sandblasting or sanding the external surface of the metal bushing; coating a configured structural adhesive on the metal bushing, and oppositely bonding the metal bushing; fixing the bonded metal bushing by a tool; and placing the fixed metal bushing, the composite backrest and the two frames into a drying oven for heating.Type: ApplicationFiled: January 14, 2021Publication date: December 22, 2022Applicant: SHANGHAI CEDAR COMPOSITES TECHNOLOGY CO., LTD.Inventors: Yi PENG, Jianlan LUO, Jiaqiang ZHU, Nannan YU, Hao ZHANG
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Publication number: 20220402222Abstract: A mold for an ultra-thick walled U-shaped composite product with a deep cavity includes an upper mold cavity, a lower mold cavity, a slidable side-drawing insert, and an auxiliary mold clamping structure. The auxiliary mold clamping structure includes a first auxiliary mold clamping insert and a second auxiliary mold clamping insert. The first auxiliary mold clamping insert is fixed on the lower mold cavity, and the second auxiliary mold clamping insert is fixed on the slidable side-drawing insert. The slidable side-drawing insert is located on a side of an integral structure formed after the upper mold cavity is engaged with the lower mold cavity, and the slidable side-drawing insert longitudinally slides along the lower mold cavity. The ultra-thick walled U-shaped composite product is formed and located between the upper mold cavity, the lower mold cavity, and the slidable side-drawing insert.Type: ApplicationFiled: January 14, 2021Publication date: December 22, 2022Applicant: SHANGHAI CEDAR COMPOSITES TECHNOLOGY CO., LTD.Inventors: Guoqiang ZHANG, Jiaqiang ZHU, Bin WANG, Jianlan LUO, Hao SUN, Jie WU, Bangshui YU
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Publication number: 20220285847Abstract: Disclosed is a midband dipole for use in a multiband antenna. The midband dipole has four folded dipoles, each of which is coupled to a decoupling circuit that has two capacitance points. The disclosed decoupling circuit configuration mitigates common mode resonance with nearby lowband dipoles, further preventing cross polarization in the midband.Type: ApplicationFiled: March 8, 2022Publication date: September 8, 2022Inventors: Jiaqiang Zhu, Niranjan Sundararajan, Wengang Chen
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Publication number: 20220200164Abstract: Disclosed is a decoupling dipole structure that renders a midband dipole effectively transparent to a nearby lowband dipole. This not only improves the beam quality in the lowband without sacrificing beam quality in the midband, it also enables different lowband dipoles to be employed to customize the lowband performance of the multiband antenna without requiring a redesign of the midband dipoles or of the array face.Type: ApplicationFiled: December 16, 2021Publication date: June 23, 2022Inventors: Jiaqiang Zhu, Wengang Chen, Niranjan Sundararajan
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Publication number: 20220077600Abstract: Disclosed is a radiator assembly configured to operate in the range of 3.4-4.2 GHz. The radiator assembly comprises a folded dipole with four dipole arms that radiate in two orthogonal polarization planes, whereby the signal of each polarization orientation is radiated by two opposite radiator arms that radiate the signal 180 degrees out of phase from each other. The radiator assembly has a balun structure that includes a balun trace that conductively couples to a ground element on the same side of the balun stem plate. The combination of the shape of the folded dipole and the balun structure reduces cross polarization between the two polarization states and maintains strong phase control between the opposing radiator arms.Type: ApplicationFiled: September 8, 2021Publication date: March 10, 2022Inventors: Niranjan SUNDARARAJAN, Jiaqiang ZHU
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Patent number: 10828870Abstract: A process for manufacturing an apron board of a high-speed rail equipment cabin using a composite material is disclosed. The material includes aramid fiber honeycomb, PET foam, 3K twill carbon fiber flame retardant prepreg, unidirectional carbon fiber flame retardant prepreg, glass fiber flame retardant prepreg, aramid flame retardant prepreg, and 300 g/m2 single component medium temperature curing blue epoxy adhesive. The process includes manufacturing an apron main plate (3); manufacturing apron-board trim strips (1, 2), wherein there are two apron-board trim strips (1) and two apron-board trim strips (2); and obtaining the apron board through the apron main plate (3) and the apron-board trim strips (1, 2), wherein the two apron-board trim strips (1) are respectively stuck at two opposite sides of the apron main plate (3), the two apron-board trim strips (2) are respectively stuck at another two opposite sides of the apron main plate (3).Type: GrantFiled: August 23, 2016Date of Patent: November 10, 2020Assignee: SHANGHAI CEDAR COMPOSITES TECHNOLOGY CO., LTD.Inventors: Jiaqiang Zhu, Bin Wang, Sishun Zhang, Ming Wang, Changzhi Xie, Jianlan Luo, Yongkai Liu
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Patent number: 10821683Abstract: A method for molding a flame-retardant bending beam integrated with a three-dimensional (3D) nylon air duct and a production mould thereof are provided. The method includes steps of: (1), producing the 3D nylon air duct; (2), selecting a flame-retardant carbon fiber pre-impregnated material: (3), laminating the pre-impregnated material and pre-molding; and (4), curing and molding composite material. The production mould includes an upper mould, a lower mould, sliding blocks and an air nozzle port. Compared with a traditional bending beam of metal molding, the flame-retardant bending beam integrated with the 3D nylon air duct achieves a same flame-retardant effect, and meanwhile has simple operation, flexible product shape, higher strength, lighter weight and corrosion resistance.Type: GrantFiled: August 23, 2016Date of Patent: November 3, 2020Assignee: SHANGHAI CEDAR COMPOSITES TECHNOLOGY CO., LTD.Inventors: Jiaqiang Zhu, Bin Wang, Hui Tang, Ming Wang, Changzhi Xie, Jianlan Luo, Yongkai Liu
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Patent number: 10632724Abstract: A process for manufacturing a base board of a high-speed rail equipment cabin using a composite material is disclosed. The composite material includes: aramid honeycomb, PET foam, 3K twill carbon fiber flame retardant prepreg, unidirectional carbon fiber flame retardant prepreg, glass fiber flame retardant prepreg, aramid flame retardant prepreg, and 300 g/cm2 single component medium temperature curing blue epoxy adhesive. The process includes manufacturing a base-board main plate (1), a base-board handle (2) and two base-board sliders (3). While installation, the base-board handle (2) is stuck to one side of the base-board main plate (1), and the two base-board sliders (3) are respectively stuck to another two opposite sides of the base-board main plate (1). The weight of the base board made from the composite material is 35%-40% lower than the base board made from the aluminum alloy material, which leads to a good prospect of application.Type: GrantFiled: August 23, 2016Date of Patent: April 28, 2020Assignee: SHANGHAI CEDAR COMPOSITES TECHNOLOGY CO., LTD.Inventors: Jiaqiang Zhu, Bin Wang, Sishun Zhang, Ming Wang, Changzhi Xie, Jianlan Luo
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Patent number: 10527034Abstract: Disclosed are a digitized automatic control method for oil-pumping and a digitized balance-shifting pumpjack, said pumpjack comprising a main motor (15), a decelerator (8), a crank (9), a connecting rod (6), a walking walking beam (3), a balance arm (7), a derrick (5), a horsehead (2), a substructure (12), brake device (13), a beam hanger (1), a load sensor (17), a stroke process measurer, a safety stop device, and a digitized control box (14). A movable counterweight box (28) moves leftward and rightward on the balance arm (7), automatically balancing load at the suspension center in various operating conditions, and pumpjack's frequency of stroke is automatically adjusted according to variations in pump fullness. Features include safety and reliability, convenience of operation, enhanced oil well production, balance rates, energy conservation and consumption reduction.Type: GrantFiled: June 29, 2017Date of Patent: January 7, 2020Assignee: XINJIANG UYGUR AUTONOMOUS REGION NO 3 MACHINE TOOL WORKSInventors: Changle Gao, Shenghong Zheng, Shujian Ma, Ninghui Li, Shengcun Yu, Kangjun Wang, Xiaoke Ji, Quan Lin, Jiaqiang Zhu, Jing Zhang, Hongyu Dong, Chunwang Sun