Patents Represented by Attorney, Agent or Law Firm Terje Gudmestad
  • Patent number: 6792212
    Abstract: A spacecraft data acquisition system comprises a telemetry and command controller, a payload unit, and a bi-directional interface that couples the telemetry and command controller to the payload unit. The interface is a single bi-directional interface that is used to reduce the complexity of the spacecraft. The transmission of information over the interface has a predetermined protocol so that the telemetry and command controller and payload unit may effectively use the single interface.
    Type: Grant
    Filed: July 13, 1999
    Date of Patent: September 14, 2004
    Assignee: The Boeing Company
    Inventors: David W. Lloyd, Alexander Mihich, William D. Lemke
  • Patent number: 6787818
    Abstract: A diffused junction semiconductor (12) for detecting light (48) at a predetermined wavelength is provided including a base (30) and an epitaxial structure (32) electrically coupled to the base (30). The epitaxial structure (32) forms a p-n junction (38) in the base (30). The epitaxial structure (32) includes at least one diffusion layer (50) electrically coupled to the base (30). At least one of the diffusion layers (50) contributes impurities in at least a portion of the base (30) to form the p-n junction (38) during growth of the epitaxial structure (32). A method for performing the same is also provided.
    Type: Grant
    Filed: June 14, 2002
    Date of Patent: September 7, 2004
    Assignee: The Boeing Company
    Inventors: Charles B. Morrison, Rengarajan Sudharsanan, Moran Haddad, Dimitri Krut, Joseph C. Boisvert, Richard R. King, Nasser H. Karam
  • Patent number: 6781454
    Abstract: A traveling wave tube assembly has a traveling wave tube and a predistortion network RF coupled and physically coupled to the traveling wave tube. The traveling wave tube and the predistortion network may be located in a high temperature zone. An amplifier located in a low temperature zone, is coupled to the predistortion network by an RF connecting cable.
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: August 24, 2004
    Assignee: Hughes Electronics Corporation
    Inventor: George F. Kirkman
  • Patent number: 6776372
    Abstract: A method for operating a satellite (10, 34) so that a predetermined amount of fuel is left to perform end-of-life maneuvers is provided. A first pressure differential is established between a first propellant tank (74) and a second propellant tank (76). Propellant is transferred from the first tank (74) to the second tank (76). The second tank is used for orbit maintenance. The first tank is used for end-of-life maneuvers. Propellant may be transferred between the tanks using a latching process so that a predetermined amount of fuel may be transferred from a non-empty tank to a full tank. Another way in which the propellant may be measured is to equalize the amount of propellant in each tank and using one tank to completion so the amount remaining is known.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: August 17, 2004
    Assignee: The Boeing Company
    Inventors: Jeremiah Salvatore, Stephen C. Jennings
  • Patent number: 6773940
    Abstract: A tunnel diode has a quantum well having at least one layer of semiconductor material. The tunnel diode also has a pair of injection layers on either side of the quantum well. The injection layers comprise a collector layer and an emitter layer. A barrier layer is positioned between each of the injection layers and the quantum well. The quantum well has an epitaxial relationship with the emitter layer. An amount of one element of the well layer is increased to increase the lattice constant a predetermined amount. The lattice constant may have a reduction in the conduction band energy. A second element is added to the well layer to increase the conduction band energy but not to change the lattice constant. By controlling the composition in this matter, the negative resistance, and thus the effective mass, may be controlled for various diode constructions.
    Type: Grant
    Filed: February 15, 2002
    Date of Patent: August 10, 2004
    Assignee: The Boeing Company
    Inventor: Joel N. Schulman
  • Patent number: 6774606
    Abstract: An electrical system has a battery circuit that includes a plurality of battery blocks. Each of the battery blocks has a plurality of parallel strings of battery cells connected thereto. A plurality of virtual cells is formed during charging by parallel coupling one cell from each string in parallel using diode.
    Type: Grant
    Filed: January 24, 2003
    Date of Patent: August 10, 2004
    Assignee: The Boeing Company
    Inventors: John C. Hall, Stanley Canter
  • Patent number: 6759829
    Abstract: A charging circuit (28) particularly suited for use in a satellite (20) has a battery cell (32). A voltage sensor (36) is coupled to the battery for generating a cell voltage signal. A current sensor (34) is coupled to the battery cell (32) and generates a cell charge current signal. A controller (38) is coupled to the voltage sensor (36) and the current sensor (34). The controller (38) determines a compensated voltage in response to the cell voltage signal and the charge current signal and controls the charging of the battery cell (32) in response to the compensated voltage.
    Type: Grant
    Filed: September 13, 2002
    Date of Patent: July 6, 2004
    Assignee: The Boeing Company
    Inventor: Craig H. Becker-Irvin
  • Patent number: 6760371
    Abstract: An equalizing apparatus includes an equalizer which has a plurality of adjustable tap weights that equalizes a received signal based on values of the adjustable tap weights, a tap weight update calculation unit coupled to the equalizer and which determines tap weight updates for use in adjusting the tap weights during operation of the equalizer, an offset memory that stores one or more tap weight update offset values and a summer coupled to the tap weight update calculation unit and to the offset memory. The summer combines each of the tap weight updates with one of the tap weight update offset values to produce modified tap weight updates which, in turn, are provided to the equalizer to adjust the tap weights.
    Type: Grant
    Filed: March 22, 2000
    Date of Patent: July 6, 2004
    Assignee: The Boeing Company
    Inventor: Susan E. Bach
  • Patent number: 6759994
    Abstract: A hybrid reflector antenna particularly suited for reflecting a frequency band in a satellite includes a central portion fully reflective to the frequency band. A first annular band is disposed directly adjacent to the central portion. The first annular band is partially reflective to the frequency band. The reflector may include several annular bands having various degrees of reflectivity and thus attenuation. The present invention may be implemented using two such reflectors, one for transmitting and one for receiving in a satellite, for either single or multiple beam applications. This invention offers more compact and lower mass/cost antenna configurations compared to conventional antennas from multiple beam satellite payloads.
    Type: Grant
    Filed: July 26, 2002
    Date of Patent: July 6, 2004
    Assignee: The Boeing Company
    Inventors: Sudhakar K. Rao, Philip H. Law, Robert Lee Reynolds, George Voulelikas
  • Patent number: 6757968
    Abstract: A circuit assembly has a heat sink assembly and a chip scale package assembly. The chip scale package assembly has an integrated circuit die coupled to a first printed wiring board. The heat sink assembly has an integrated circuit die coupled to a second printed wiring board. Preferably, the heat sink assembly and the chip scale package assembly are assembled separately then assembled together. The circuit pads on the first printed wiring board correspond with circuit pads on the second printed wiring board. The circuit pads may be coupled together by solder or adhesive bonding. The circuit pads on the first printed wiring board may have solder balls formed of high temperature solder that do not melt when the heat sink assembly is assembled with chip scale package assembly. The solder balls allow chip scale package assembly to maintain a predetermined distance from the circuit pads on the second printed wiring board.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: July 6, 2004
    Assignee: The Boeing Company
    Inventors: Ching P. Lo, Daniel A. Huang, Pete Hudson
  • Patent number: 6757858
    Abstract: A fault detection system for a satellite communication system includes a satellite positioned above earth. Satellite has a payload that communicates with a network control center on earth. System ground stations generate diagnostic messages and transmits the diagnostic messages to the payload. Each diagnostic message has a predetermined path characteristic so that the diagnostic message takes a predetermined path through the payload, or part of the payload, if the payload is operating properly. Parts of the payload, if any, which do not permit deterministic path tracing using externally applied diagnostic messages may be probed by using internal signal or data injection points. In response to the externally applied or internally injected diagnostic message, a response signal is generated at the payload. The response signal is transmitted to the network control center where it is compared with a predetermined response.
    Type: Grant
    Filed: July 31, 2000
    Date of Patent: June 29, 2004
    Assignee: Hughes Electronics Corp.
    Inventor: Richard Flammang
  • Patent number: 6750709
    Abstract: A bipolar transistor-based linearizer with programmable gain and phase response apparatus uses a splitter to separate an incoming RF signal into two equal components: in-phase (I) and quadrature (Q, ninety degrees delayed). The I signal then passes through a first bipolar variable gain amplifier (VGA) while the Q signal passes through a second bipolar VGA. After passing through the first and second VGAs, the amplified signals are combined at the output using a summer to produce a predistorted signal that drives a TWTA. The gains of each VGA are controlled using an RF power detector in conjunction with a bipolar gain/phase slope controller. Each gain can be adjusted separately to product a large range of linearization characteristics.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: June 15, 2004
    Assignee: The Boeing Company
    Inventors: Gopal Raghavan, Michael G. Case, Carl Pobanz
  • Patent number: 6738598
    Abstract: A multilayer radio frequency interconnect apparatus includes a plurality of laminated printed wiring boards made of a dielectric material with low loss characteristics for radio frequency electromagnetic radiation. In operation, a RF signal launches from a first signal conductor 24. A vertical transition from the first signal conductor 24 to a second signal conductor 44 is realized by a 3-wire transmission line. The center conductor of the 3-wire transmission line is a RF via 30. The two outer conductors are RF ground vias 32 and connect the first RF ground conductor 22 to the second RF ground conductor 42. These two RF ground vias 32 are isolated from the ground planes 40, 46 which are located between RF signal layers 20, 38. The advantage of this ground isolation is to maintain the 3-wire transmission line characteristic impedance and to reduce disturbance to electromagnetic fields such that a broadband design may be achieved. The RF ground vias are terminated at signal layers 20, 38.
    Type: Grant
    Filed: August 17, 2001
    Date of Patent: May 18, 2004
    Assignee: The Boeing Company
    Inventors: Shih-Chang Wu, Yaozhong Liu
  • Patent number: 6730979
    Abstract: A recessed p-type region cap layer avalanche photodiode (12) is provided. The photodiode (12) includes a semiconductor substrate (30) and a semiconductor stack (32), which is electrically coupled to the substrate (30). A cap layer (34) is electrically coupled to the stack (32) and includes a recessed p-type region (36). The recessed p-type region (36) forms a p-n junction (38) with the stack (32). A method of forming the photodiode (12) is also provided. The method includes forming the substrate (30), the stack (32), and the cap layer (34). The cap layer (34) is selectively etched to expose the stack (32) and form a cap layer opening (42). Dopant is diffused through the cap layer opening (42) into the stack (32) to form the p-n junction (38).
    Type: Grant
    Filed: September 12, 2002
    Date of Patent: May 4, 2004
    Assignee: The Boeing Company
    Inventor: Joseph C. Boisvert
  • Patent number: 6708928
    Abstract: A variable spacer includes a plate having a first surface and a second surface. At least one hole is integrally formed within the plate, extending from the first surface to the second surface. The hole receives a shaft of a separation bolt used for attaching a spacecraft to a launch vehicle. The plate increases a first load within the separation bolt to a second load during a turbulent stage. The second load reduces a gapping that occurs between the launch vehicle and the spacecraft. Thereafter, the plate reduces the second load within the separation bolt to a third load during a separation stage. The third load decreases a shock level experienced by the spacecraft and the launch vehicle.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: March 23, 2004
    Assignee: The Boeing Company
    Inventor: Kenneth N. Telford
  • Patent number: 6695261
    Abstract: A launch vehicle assembly has a launch vehicle body (10) having a first slot (48a) therein. A first magnet (50a) is disposed within the first slot (43a). A fairing assembly (12) is positioned adjacent to the vehicle body (10). The fairing assembly (12) has a second slot (30a) therein positioned opposite the first slot (48a). A second magnet (40a) is disposed within the second slot (30a) so that the second magnet (40a) repels the first magnet (50a).
    Type: Grant
    Filed: February 11, 2002
    Date of Patent: February 24, 2004
    Assignee: The Boeing Company
    Inventor: Mark Cleveland
  • Patent number: 6690252
    Abstract: A circuit assembly suitable for RF signals has an integration plate and an RF distribution layer disposed adjacent to the integration plate. The RF distribution layer has an RF conductive layer between a first dielectric layer and a second dielectric layer. A DC distribution layer is disposed adjacent to the RF distribution layer. An RF input is coupled to the RF conductive layer. A module assembly includes an integrated circuit coupled to the RF conductive layer and the DC distribution layer. An RF output is coupled to the RF conductive layer.
    Type: Grant
    Filed: November 19, 2001
    Date of Patent: February 10, 2004
    Assignee: The Boeing Company
    Inventors: Sutton Scoltock Jr., Yaozhong Liu, Paul Rosadiuk, Shih-Chang Wu, Herbert Suyematsu, Richard Fanucchi
  • Patent number: 6690313
    Abstract: The digital signal is provided to the digital-to-analog upconverter (40) such as through digital signal processing circuitry (70). A sample rate signal and a divided sample rate signal are provided by divider chain (96) using the clock input (44). The divided sample rate signal is used to drive the decode circuit (88). The digital outputs of the decoder circuit (88) is combined with the sample rate signal in a mixer (52) which in turn generates a digitally upconverted signal which drives a plurality of switches combined together to form the analog output (46).
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: February 10, 2004
    Assignee: The Boeing Company
    Inventors: Henry P. Warren, David L. Crampton, Anthony L. McKay
  • Patent number: 6684182
    Abstract: A spacecraft emulation system that can emulate both the attitude control subsystem and the non-attitude control subsystem is integrated into a single compact unit. The unit includes an emulated spacecraft control processor for processing attitude control information and an emulated central command and telemetry unit for interfacing simulated spacecraft data. The inlet also includes a first simulation engine that is operative to simulate the spacecraft attitude control system and a second simulation engine that is operative to simulate the spacecraft power, thermal, propulsion and payload subsystems. Both the first and second simulation engines are connected to the emulated spacecraft control processor via a respective bus. A host computer provides the command data and receives the telemetry data from the emulated spacecraft control processor.
    Type: Grant
    Filed: March 20, 2000
    Date of Patent: January 27, 2004
    Assignee: Hughes Electronics Corporation
    Inventors: Jeffrey J. Gold, David L. Koza, Michael J. Surace, Steven R. Zammit
  • Patent number: 6684070
    Abstract: A TDMA beacon for satellite system synchronization includes a beacon signal generator and a time division multiplexed switch. The beacon signal generator generates a beacon signal. The TDM switch is coupled to the beacon signal generator and receives the beacon signal. The TDM switch embeds the beacon signal with a data signal into a TDMA signal. The TDMA signal is then broadcast to a ground station where the beacon signal may be extracted from the TDMA signal and used to synchronize a terminal with the satellite system.
    Type: Grant
    Filed: September 26, 2000
    Date of Patent: January 27, 2004
    Assignee: Hughes Electronics Corporation
    Inventors: Harold A. Rosen, Arnold L. Berman, Chak M. Chie