Patents Assigned to Maxtena, Inc.
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Patent number: 12074367Abstract: Wide band Multiple-Input Multiple-Output (MIMO) antenna arrays include elements that taper from small ends located proximate to ground planes to larger ends which may be extended with vertical walls. Different shapes of tapered elements which exhibit different directivity patterns may be used in the same array and/or elements may be oriented differently such that their directivity patters peak in different directions. Each element is provided with symmetrically or asymmetrically located ground shunted conductors which serve to increase non-uniformity in the azimuthal directivity patterns. The ground shunt conductors are strategically placed to reduce element intercoupling which foster improved MIMO system performance.Type: GrantFiled: October 26, 2020Date of Patent: August 27, 2024Assignee: Maxtena, Inc.Inventor: Milan Lukic
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Publication number: 20210006327Abstract: A mobile satellite radio equipped with a phased array antenna configures the phased array antenna in one or more non-directional operating modes in order to initially detect a signal from a communication satellite. Once a signal has been received from the satellite, frequency information determined in the course of operating in the one or more non-directional modes is used to configure the mobile satellite radio for operation in a subsequent stage when the phased array antenna is configured in a directional mode. In the subsequent stage the phased array antenna is used to scan a solid angle space to determine the direction of the satellite. Thereafter the antenna is used in the directional mode for satellite communication.Type: ApplicationFiled: September 21, 2020Publication date: January 7, 2021Applicant: Maxtena, Inc.Inventors: Carlo DiNallo, Nathan Cummings
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Patent number: 10819027Abstract: Wide band Multiple-Input Multiple-Output (MIMO) antenna arrays include elements that taper from small ends located proximate to ground planes to larger ends which may be extended with vertical walls. Different shapes of tapered elements which exhibit different directivity patterns may be used in the same array and/or elements may be oriented differently such that their directivity patters peak in different directions. Each element is provided with symmetrically or asymmetrically located ground shunted conductors which serve to increase non-uniformity in the azimuthal directivity patterns. The ground shunt conductors are strategically placed to reduce element intercoupling which foster improved MIMO system performance.Type: GrantFiled: October 10, 2017Date of Patent: October 27, 2020Assignee: Maxtena, Inc.Inventor: Milan Lukic
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Patent number: 10700430Abstract: A multi-band antenna has a plurality of primary filar antenna elements and a plurality of parasitic filar antenna elements. Primary feed ends are coupled to feed signals. Parasitic feed ends are coupled to a common ground. Respective primary filar antenna elements and parasitic filar antenna elements are adjacently spaced from one another by a parasitic distance sufficiently narrow to shorten the primary and parasitic physical lengths relative to the primary and parasitic electrical lengths. The primary and parasitic filar antenna elements are capacitively coupled across the parasitic distance and can have different physical lengths. An optional additional filar antenna element has a bottom end coupled to the common ground. The additional filar antenna element can be distanced from the primary filar antenna element a separation distance sufficient to avoid capacitive coupling therebetween and can be greater than the parasitic distance. A process can obtain the parasitic distance for the antenna.Type: GrantFiled: December 4, 2017Date of Patent: June 30, 2020Assignee: Maxtena, Inc.Inventor: Fereshteh Abbasi
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Patent number: 10355351Abstract: Systems for maintain pointing of a phased array antenna in a direction maximizes to an extent possible the effective antenna gain is provided. The system includes a gyroscope and a Kalman Filter. The Kalman filter estimates an antenna pointing direction for each successive time step based on gyroscope readings and based on the results of a local search for maximum gain performed in the neighborhood of a previous antenna pointing direction.Type: GrantFiled: March 24, 2015Date of Patent: July 16, 2019Assignee: Maxtena, Inc.Inventors: Nathan Cummings, Stanislavv Licul
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Patent number: 10222445Abstract: A system includes a phased array antenna that is used to emulate antennas that have larger solid angle coverage and lower gain compared to a single beam of the phased array antenna. This is achieved by switching between beams of the phased array antenna while receiving a wireless communication signal and summing representations of signal energy received using the different beams. The system can be used to narrow down the angular coordinates of a transmitting satellite by emulating antenna patterns that cover portions of a search space. The system can also be used to determine a channel discriminator (e.g., frequency, code, time slot) that defines a signal being transmitted.Type: GrantFiled: April 10, 2015Date of Patent: March 5, 2019Assignee: Maxtena, Inc.Inventors: Nathan Cummings, Stanislav Licul, Carlo DiNallo
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Patent number: 10199733Abstract: Multi-band quadrifilar antennas that are suitable for satellite communication include composite elements each of which include multiple conductors operating at different frequencies connected to a bus bar. Each composite element is coupled to a signal feed and to a ground structure.Type: GrantFiled: January 13, 2018Date of Patent: February 5, 2019Assignee: Maxtena, Inc.Inventor: Carlo DiNallo
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Patent number: 10103433Abstract: A phased array antenna for an earth terminal for a low earth orbit satellite communication system. The phased array antenna includes a set of Quadrafilar Helical Antenna's (QHAs) elements that produce a peak directivity far off-axis which partially compensates for the angular dependence of satellite systems gain which peaks at relatively lower angle. To attain the desired angular dependence of the gain and operability at high zenith angles, the QHAs are preferably spaced apart by a distance between 0.4? and 0.45?, includes filaments that have a helical pitch angle ? of between 62° and 84°.Type: GrantFiled: April 21, 2016Date of Patent: October 16, 2018Assignee: Maxtena, Inc.Inventors: Carlo DiNallo, Nathan Cummings, Stanislav Licul, Simone Paulotto
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Patent number: 10038235Abstract: A multi-mode, multi-band antenna system for a handheld wireless device includes a Quadrafilar Helix Antenna (QHA) that radiates circularly polarized waves is fed by a co-axial cable. The co-axial cable is also used in combination with the QHA as a monopole antenna. Because of the distinct electromagnetic field patterns of the QHA versus the combination of the QHA and the co-axial cable operating as a monopole antenna, the cross coupling between the two modes is low. In certain embodiments the co-axial cable can itself be formed into a helix in order to reduce the physical length of the antenna system while maintaining an electrical length desired to supported certain frequency bands in the monopole mode. According to certain embodiments a post which also serves to increase the effective electric length of the co-axial cable and thereby support a lower frequency band is provided along the centerline of the QHA.Type: GrantFiled: March 4, 2014Date of Patent: July 31, 2018Assignee: Maxtena, Inc.Inventors: Carlo DiNallo, Simone Paulotto, Nathan Cummings
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Publication number: 20180048382Abstract: A mobile satellite radio equipped with a phased array antenna configures the phased array antenna in one or more non-directional operating modes in order to initially detect a signal from a communication satellite. Once a signal has been received from the satellite, frequency information determined in the course of operating in the one or more non-directional modes is used to configure the mobile satellite radio for operation in a subsequent stage when the phased array antenna is configured in a directional mode. In the subsequent stage the phased array antenna is used to scan a solid angle space to determine the direction of the satellite. Thereafter the antenna is used in the directional mode for satellite communication.Type: ApplicationFiled: October 23, 2017Publication date: February 15, 2018Applicant: Maxtena, Inc.Inventors: Carlo DiNallo, Nathan Cummings
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Patent number: 9742064Abstract: A low height, space efficient, dual band monopole antenna is provided. The antenna includes a first conductive post, a second conductive post and a third conductive post extending between a lower oblong shaped PCB and an upper oblong shaped PCB. A signal is applied to a bottom end of a first conductive post and bottom ends of the remaining two posts are coupled to ground. The top of the first post is connected to the tops of the second and third posts by a serpentine trace which in one embodiment is symmetric and in another embodiment is asymmetric. The asymmetric embodiment achieves improved dual band operation without the need for an impedance matching network.Type: GrantFiled: November 9, 2015Date of Patent: August 22, 2017Assignee: Maxtena, Inc.Inventor: Simone Paulotto
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Publication number: 20160336653Abstract: A low height, space efficient, dual band monopole antenna is provided. The antenna includes a first conductive post, a second conductive post and a third conductive post extending between a lower oblong shaped PCB and an upper oblong shaped PCB. A signal is applied to a bottom end of a first conductive post and bottom ends of the remaining two posts are coupled to ground. The top of the first post is connected to the tops of the second and third posts by a serpentine trace which in one embodiment is symmetric and in another embodiment is asymmetric. The asymmetric embodiment achieves improved dual band operation without the need for an impedance matching network.Type: ApplicationFiled: November 9, 2015Publication date: November 17, 2016Applicant: Maxtena, Inc.Inventor: Simone PAULOTTO