Patents by Inventor Jack Lundstedt
Jack Lundstedt 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: 11923593Abstract: An antenna pedestal including: a body having an inner cavity defined by a wall and a top ledge; a Heating, ventilation, and air conditioning (HVAC) system to provide climate control for the inner cavity; and a door to access the inner cavity of the body, wherein the top ledge supports a mechanical steering.Type: GrantFiled: May 19, 2022Date of Patent: March 5, 2024Assignee: Hughes Network Systems, LLCInventors: Michael Scott, Jack Lundstedt, Walter Kepley
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Publication number: 20230370984Abstract: Communication systems and methods are disclosed herein. In an embodiment, a communication system includes a grandmaster clock and a modem unit. The grandmaster clock is configured to output a primary clock reference based on a received signal. The modem unit is configured for communication with a remote terminal. The modem unit includes a network clock configured to be tuned based on the primary clock reference. The network clock is further configured to output a first signal to be used for a time reference for communications with the remote terminal. The modern unit also includes a master clock configured to be tuned based on the primary clock reference. The master clock is further configured to output a second signal to be used for a frequency reference for communications with the remote terminal.Type: ApplicationFiled: May 11, 2022Publication date: November 16, 2023Inventors: Nimesh AMBESKAR, Jack LUNDSTEDT, Yogesh SETHI, Patrick O'NEIL, Tyler HORWAT
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Patent number: 11764863Abstract: A system to reduce a count of satellite gateways is disclosed. The system includes: a feeder link capacity of a satellite; a spectrum ranging from 26.5 GHz to 75 GHz; a gateway feeder link capacity that is an aggregate of capacities of channels defined in the spectrum; and RF gateways communicating with the satellite via the channels, wherein the count of the satellite gateways is less than or equal to a rounded-up integer of the feeder link capacity divided by the gateway feeder link capacity, and the satellite is a geosynchronous orbit satellite.Type: GrantFiled: December 27, 2021Date of Patent: September 19, 2023Assignee: Hughes Network SystemsInventors: Michael Scott, Jack Lundstedt, Robert Kepley
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Publication number: 20230073425Abstract: An antenna pedestal including: a body having an inner cavity defined by a wall and a top ledge; a Heating, ventilation, and air conditioning (HVAC) system to provide climate control for the inner cavity; and a door to access the inner cavity of the body, wherein the top ledge supports a mechanical steering.Type: ApplicationFiled: May 19, 2022Publication date: March 9, 2023Inventors: Michael SCOTT, Jack LUNDSTEDT, Walter KEPLEY
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Publication number: 20230072900Abstract: A system to reduce a count of satellite gateways is disclosed. The system includes: a feeder link capacity of a satellite; a spectrum ranging from 26.5 GHz to 75 GHz; a gateway feeder link capacity that is an aggregate of capacities of channels defined in the spectrum; and RF gateways communicating with the satellite via the channels, wherein the count of the satellite gateways is less than or equal to a rounded-up integer of the feeder link capacity divided by the gateway feeder link capacity, and the satellite is a geosynchronous orbit satellite.Type: ApplicationFiled: December 27, 2021Publication date: March 9, 2023Applicant: Hughes Network SystemsInventors: Michael SCOTT, Jack LUNDSTEDT, Robert KEPLEY
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Patent number: 10236575Abstract: An antenna system comprises an antenna feed support and a driver. The antenna feed support is configured to mount a circularly polarized antenna feed to an antenna dish to extend outward along a longitudinal axis of the circularly polarized antenna feed with respect to a reflective surface of the antenna dish. The driver is configured to rotate the circularly polarized antenna feed to adjust alignment between the circularly polarized antenna feed and a remote antenna. The driver can rotate the circularly polarized antenna feed mechanically, electrically or both to adjust alignment between the circularly polarized antenna feed and a remote antenna to reduce cross-pol discrimination at the circularly polarized antenna feed.Type: GrantFiled: January 14, 2016Date of Patent: March 19, 2019Assignee: HUGHES NETWORK SYSTEMS, LLCInventors: Jack Lundstedt, Peter Hou, David Farrow, Ramesh Kollipara
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Patent number: 9854544Abstract: Power spectral density in an aeronautical satellite communication system is controlled through the use of adaptive inroute selection and spreading. Once a communication session has been established between the aircraft and the satellite, environmental conditions and aircraft conditions are monitored to detect events capable of affecting transmit/receive properties during the communication session. A maximum allowable transmission output is determined based, at least in part, on governmental regulations and the conditions being monitored. One or more transmit parameters are adjusted during the time interval in order to maintain transmission output power of the aircraft terminal below the maximum allowable transmission output power.Type: GrantFiled: February 28, 2017Date of Patent: December 26, 2017Assignee: HUGHES NETWORK SYSTEMS, LLCInventors: Bahman Salamat, Jack Lundstedt, Yezdi Antia, Guy Montgomery, John Schmid
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Publication number: 20170207528Abstract: An antenna system comprises an antenna feed support and a driver. The antenna feed support is configured to mount a circularly polarized antenna feed to an antenna dish to extend outward along a longitudinal axis of the circularly polarized antenna feed with respect to a reflective surface of the antenna dish. The driver is configured to rotate the circularly polarized antenna feed to adjust alignment between the circularly polarized antenna feed and a remote antenna. The driver can rotate the circularly polarized antenna feed mechanically, electrically or both to adjust alignment between the circularly polarized antenna feed and a remote antenna to reduce cross-pol discrimination at the circularly polarized antenna feed.Type: ApplicationFiled: January 14, 2016Publication date: July 20, 2017Inventors: Jack LUNDSTEDT, Peter HOU, David FARROW, Ramesh KOLLIPARA
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Publication number: 20170188317Abstract: Power spectral density in an aeronautical satellite communication system is controlled through the use of adaptive inroute selection and spreading. Once a communication session has been established between the aircraft and the satellite, environmental conditions and aircraft conditions are monitored to detect events capable of affecting transmit/receive properties during the communication session. A maximum allowable transmission output is determined based, at least in part, on governmental regulations and the conditions being monitored. One or more transmit parameters are adjusted during the time interval in order to maintain transmission output power of the aircraft terminal below the maximum allowable transmission output power.Type: ApplicationFiled: February 28, 2017Publication date: June 29, 2017Inventors: Bahman SALAMAT, Jack LUNDSTEDT, Yezdi ANTIA, Guy MONTGOMERY, John SCHMID
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Patent number: 9621256Abstract: Power spectral density in an aeronautical satellite communication system is controlled through the use of adaptive inroute selection and spreading. Once a communication session has been established between the aircraft and the satellite, environmental conditions and aircraft conditions are monitored to detect events capable of affecting transmit/receive properties during the communication session. A maximum allowable transmission output is determined based, at least in part, on governmental regulations and the conditions being monitored. One or more transmit parameters are adjusted in order to maintain transmission output power of the aircraft terminal below the maximum allowable transmission output power.Type: GrantFiled: December 29, 2015Date of Patent: April 11, 2017Assignee: HUGHES NETWORK SYSTEMS, LLCInventors: Bahman Salamat, Jack Lundstedt, Yezdi Antia, Guy Montgomery, John Schmid
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Patent number: 9510227Abstract: It is determined, e.g., in a communications terminal, that a test triggering event has occurred. A test is initiated based on the determination that the test triggering event has occurred. One or more transmissions are transmitted at one or more respective specified power levels. Measurement data is received from a remote measurement unit indicating respective received power levels of the one or more transmissions by the remote measurement unit. Based on the measurement data, a maximum transmit power level is determined.Type: GrantFiled: December 31, 2014Date of Patent: November 29, 2016Assignee: Hughes Network Systems, LLCInventors: Jack Lundstedt, Doug Ricker, John Schmid
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Patent number: 9473193Abstract: A mobile terminal for satellite communications receives communication, e.g., from a gateway via a satellite link. A frequency lock loop unit locks to the carrier frequency of the received communication. The mobile terminal includes a global positioning system for receiving global positioning data. The mobile terminal determines the Doppler frequency shift of the received communications based on the global positioning data. The mobile terminal generates a reference clock for return transmissions based on the frequency of the frequency lock loop, corrected for the Doppler shift. A correction factor of two times the determined Doppler frequency shift is used, to compensate for both a forward and return transmission link.Type: GrantFiled: December 29, 2014Date of Patent: October 18, 2016Assignee: Hughes Network Systems, LLCInventors: Jack Lundstedt, John Schmid, Guy Montgomery, Bahman Salamat, George Eapen, Yeqing Tang, Brian Smith
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Publication number: 20160192226Abstract: It is determined, e.g., in a communications terminal, that a test triggering event has occurred. A test is initiated based on the determination that the test triggering event has occurred. One or more transmissions are transmitted at one or more respective specified power levels. Measurement data is received from a remote measurement unit indicating respective received power levels of the one or more transmissions by the remote measurement unit. Based on the measurement data, a maximum transmit power level is determined.Type: ApplicationFiled: December 31, 2014Publication date: June 30, 2016Applicant: HUGHES NETWORK SYSTEMS, LLCInventors: Jack Lundstedt, Doug Ricker, John Schmid
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Publication number: 20160173162Abstract: A mobile terminal for satellite communications receives communication, e.g., from a gateway via a satellite link. A frequency lock loop unit locks to the carrier frequency of the received communication. The mobile terminal includes a global positioning system for receiving global positioning data. The mobile terminal determines the Doppler frequency shift of the received communications based on the global positioning data. The mobile terminal generates a reference clock for return transmissions based on the frequency of the frequency lock loop, corrected for the Doppler shift. A correction factor of two times the determined Doppler frequency shift is used, to compensate for both a forward and return transmission link.Type: ApplicationFiled: December 29, 2014Publication date: June 16, 2016Applicant: Hughes Network Systems, LLCInventors: Jack Lundstedt, John Schmid, Guy Montgomery, Bahman Salamat, George Eapen, Yeqing Tang, Brian Smith
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Patent number: 6956526Abstract: A method of pointing an antenna at a transmitter comprising the steps of: (a) varying the azimuth of the antenna dish a predetermined number of degrees in a first direction from a predetermined azimuth angle; (b) measuring a first signal strength of an incoming signal received by the antenna dish; (c) varying the azimuth of the antenna dish the same predetermined number of degrees in a second direction from the predetermined azimuth angle, where the second direction is opposite to the first direction; (d) measuring a second signal strength of the incoming signal received by the antenna dish; and (e) comparing the first signal strength to the second signal strength, and if the first signal strength substantially equals the second signal strength, the current predetermined azimuth angle represents the optimal angle of azimuth for the antenna dish.Type: GrantFiled: October 18, 2004Date of Patent: October 18, 2005Assignee: The DIRECTV Group Inc.Inventors: Jack Lundstedt, Jr., John Schmid, Richard Sims, Peter Hou, Patrick Marrone, Lawrence Cronise
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Patent number: 6593893Abstract: An approach for providing a multiple-beam antenna system for receiving and transmitting electromagnetic signals from a plurality of closely spaced satellites is disclosed. Dielectric inserts are selectively coupled to the feedhorn bodies to alter the radiation patterns according to dielectric constants of the dielectric inserts. A reflector produces multiple antenna beams based upon the altered radiation patterns of the feedhorn bodies. The antenna provides simultaneous transmissions to satellites that are spaced about 2° or less.Type: GrantFiled: December 14, 2000Date of Patent: July 15, 2003Assignee: Hughes Electronics CorporationInventors: Peter Hou, Thomas Jackson, Jack Lundstedt, Jr.
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Publication number: 20020081978Abstract: An RF emission hazard zone of an RF transceiver is controlled to ensure that RF energy density limits for humans is not exceeded when a human body part enters the RF hazard zone near an antenna reflector and feedhorn. In a first aspect, a transmitter duty cycle is reduced to effectively reduce the average power transmitted from the antenna whenever a signal level of a received signal is reduced below a threshold value. The reduction in average transmitter power reduces the RF emission hazard zone near the antenna, and limits the exposure of any person who has intruded into the hazard zone. In a second aspect, the transmitter is disabled whenever a received signal is affected so that signal quality, bit-energy-to-noise ratio (Eb/No), synchronized state in a demodulator, lock condition in a FLL, or received signal strength are degraded, indicating that a human has intruded into the RF hazard zone.Type: ApplicationFiled: April 9, 2001Publication date: June 27, 2002Inventors: Peter Hou, Fayez Hyjazie, Thomas Jackson, Stan Kay, Jack Lundstedt, Doug Ricker, Ken Sahai, James Zawlocki, Walter R. Kepley
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Publication number: 20020075196Abstract: An approach for providing a multiple-beam antenna system for receiving and transmitting electromagnetic signals from a plurality of closely spaced satellites is disclosed. Dielectric inserts are selectively coupled to the feedhorn bodies to alter the radiation patterns according to dielectric constants of the dielectric inserts. A reflector produces multiple antenna beams based upon the altered radiation patterns of the feedhorn bodies. The antenna provides simultaneous transmissions to satellites that are spaced about 2° or less.Type: ApplicationFiled: December 14, 2000Publication date: June 20, 2002Inventors: Peter Hou, Thomas Jackson, Jack Lundstedt
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Patent number: 5659892Abstract: A method and system for using a low-cost, fixed output power radio in a multi-carrier communication system is disclosed herein. This system measures the output power of the multiple channel units within the system, obtains the current output power of the system, calculates a composite power and an expected power, compares the expected power and the current output power to calculate a gain adjustment value, and adjusting the output power of the system via the amplifier. The method for adjusting the power can also allow at least one of the carriers in the multi-carrier system to operate in a burst mode, and at least one of the remaining carriers to operate in a continuous mode during power measurement and gain adjustment steps.Type: GrantFiled: July 13, 1995Date of Patent: August 19, 1997Assignee: Hughes ElectronicsInventors: Mohammad Soleimani, D. Ray Lowe, Guy Montgomery, Henry Eck, Eryx Malcolm, Royce Hernandez, Tom Jackson, Jack Lundstedt