Patents by Inventor Jafar Shaker
Jafar Shaker 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: 11161996Abstract: The present invention relates to an electronic device comprising a printed substrate comprising a trace of molecular ink thereon, the molecular ink being sintered to form a conductive metal trace forming the electronic device, wherein the molecular ink is chosen from a) a flake-less printable composition of 30-60 wt % of a C8-C12 silver carboxylate, 0.1-10 wt % of a polymeric binder and balance of at least one organic solvent, all weights based on total weight of the composition; or b) a flake-less printable composition of 5-75 wt % of bis(2-ethyl-1-hexylamine) copper (II) formate, bis(octylamine) copper (II) formate or tris(octylamine) copper (II) formate, 0.25-10 wt % of a polymeric binder and balance of at least one organic solvent, all weights based on total weight of the composition.Type: GrantFiled: October 25, 2017Date of Patent: November 2, 2021Assignees: E2IP TECHNOLOGIES INC., NATIONAL RESEARCH COUNCIL OF CANADA, HER MAJESTY THE QUEEN IN RIGHT OF CANADA (...)Inventors: Xiangyang Liu, Olga Mozenson, Bhavana Deore, Chantal Paquet, Arnold Kell, Patrick Malenfant, Julie Ferrigno, Olivier Ferrand, Jian Xiong Hu, Sylvie Lafreniere, Reza Chaharmir, Jonathan Ethier, Khelifa Hettak, Jafar Shaker, Adrian Momciu
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Patent number: 10797108Abstract: An electronic component such as a voltage controllable reconfigurable capacitor or transistor is formed by printing one or more layers of ink on a non-conductive substrate. Ferroelectric ink or semi-conductive ink is printed and conductive resistive or dielectric ink is printed on a s same or different layers. Reconfigurability is achieved by printing resistive biasing circuitry wherein when a changing voltage is applied to the biasing circuitry, an electronic property of the electronic component changes in response to the changing voltage.Type: GrantFiled: April 26, 2018Date of Patent: October 6, 2020Assignee: Her Majesty the Queen in the Right of Canada, as represented by the Minister of Industry, through the Communication Research Centre CanadaInventors: Khelifa Hettak, Jafar Shaker, Aldo Petosa, Jonathan Ethier, Reza Chaharmir, Ming Li, Nicolas Gagnon
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Publication number: 20190284422Abstract: The present invention relates to an electronic device comprising a printed substrate comprising a trace of molecular ink thereon, the molecular ink being sintered to form a conductive metal trace forming the electronic device, wherein the molecular ink is chosen from a) a flake-less printable composition of 30-60 wt % of a C8-C12 silver carboxylate, 0.1-10 wt % of a polymeric binder and balance of at least one organic solvent, all weights based on total weight of the composition; or b) a flake-less printable composition of 5-75 wt % of bis(2-ethyl-1-hexylamine) copper (II) formate, bis(octylamine) copper (II) formate or tris(octylamine) copper (II) formate, 0.25-10 wt % of a polymeric binder and balance of at least one organic solvent, all weights based on total weight of the composition.Type: ApplicationFiled: October 25, 2017Publication date: September 19, 2019Applicants: GGI INTERNATIONAL, NATIONAL RESEARCH COUNCIL OF CANADA, HER MAJESTY THE QUEEN IN RIGHT OF CANADA (...)Inventors: Xiangyang LIU, Olga MOZENSON, Bhavana DEORE, Chantal PAQUET, Arnold KELL, Patrick MALENFANT, Julie FERRIGNO, Olivier FERRAND, Jian Xiong HU, Sylvie LAFRENIERE, Reza CHAHARMIR, Jonathan ETHIER, Khelifa HETTAK, Jafar SHAKER, Adrian MOMCIU
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Publication number: 20190074325Abstract: An electronic component such as a voltage controllable reconfigurable capacitor or transistor is formed by printing one or more layers of ink on a non-conductive substrate. Ferroelectric ink or semi-conductive ink is printed and conductive resistive or dielectric ink is printed on a s same or different layers. Reconfigurability is achieved by printing resistive biasing circuitry wherein when a changing voltage is applied to the biasing circuitry, an electronic property of the electronic component changes in response to the changing voltage.Type: ApplicationFiled: April 26, 2018Publication date: March 7, 2019Inventors: Khelifa HETTAK, Jafar SHAKER, Aldo PETOSA, Jonathan ETHIER, Reza CHAHARMIR, Ming LI, Nicolas GAGNON
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Patent number: 6987591Abstract: A volume hologram for modifying a characteristic of an input microwave beam and a method for manufacturing thereof are disclosed. The hologram is fabricated from a multi-layer artificial dielectric wherein each layer is made of a dielectric material and includes a lattice of inclusions, for example metal disks disposed on one side thereof, and wherein a pre-determined three-dimensional grating pattern of dielectric perturbations is induced by spatial modulating the lattice of the inclusions. The hologram can be designed for efficiently steering, reshaping, combining or splitting microwave beams.Type: GrantFiled: July 16, 2004Date of Patent: January 17, 2006Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of Industry through the Communications Research Centre CanadaInventors: Jafar Shaker, Michel Cuhaci, Apisak Ittipiboon
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Publication number: 20050012972Abstract: A volume hologram for modifying a characteristic of an input microwave beam and a method for manufacturing thereof are disclosed. The hologram is fabricated from a multi-layer artificial dielectric wherein each layer is made of a dielectric material and includes a lattice of inclusions, for example metal disks disposed on one side thereof, and wherein a pre-determined three-dimensional grating pattern of dielectric perturbations is induced by spatial modulating the lattice of the inclusions. The hologram can be designed for efficiently steering, reshaping, combining or splitting microwave beams.Type: ApplicationFiled: July 16, 2004Publication date: January 20, 2005Inventors: Jafar Shaker, Michel Cuhaci, Apisak Ittipiboon
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Patent number: 6774851Abstract: The present invention relates to a reflectarray antenna. The reflectarray antenna comprises a dielectric substrate layer disposed on a ground plane. An array of radiating elements such as microstrip patches of similar size are arranged into a regular lattice configuration on the top surface of the substrate layer. A periodic configuration of slots of variable size are provided at the bottom surface of the substrate layer. A required phase shift at each position on the reflectarray surface is obtained by adjusting the slot length on the ground plane. The incident wave from the feed excites the dominant mode on the microstrip patches The presence of slots acts as an inductive loading of the patches, which introduces a phase shift in the patch response. The inductance of each slot depends on its length.Type: GrantFiled: September 27, 2002Date of Patent: August 10, 2004Assignee: Her Majesty in right of Canada, as represented by the Minister of IndustryInventors: Michel Cuhaci, Jafar Shaker, Mohammad Reza Chaharmir, Abdel Razik Sebak
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Patent number: 6067050Abstract: Due to the frequency dependence of phasing mechanisms applied in planar printed reflectors, when using planar printed reflector antennas beam squint occurs as the frequency is scanned within the operating band. In order to reduce or eliminate beam squint, an incident signal incident upon a reflector is altered in such a way that the outgoing signal retains a same direction. In an embodiment, this is achieved by providing feed elements in different locations, each feed element for feeding a signal of a different frequency. In another embodiment, two reflector arrays are used wherein beam squint caused by the first reflector array is compensated for by the second reflector array.Type: GrantFiled: May 22, 1998Date of Patent: May 23, 2000Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of Industry through the Communications Research CentreInventors: Jafar Shaker, Apisak Ittipiboon, Michel Cuhaci