John S Eng, 56Bellingham, WA

6489842, Dec 3, 2002

Jan 5, 2001

09/755392

John E. Eng - Buena Park CA

The Boeing Company - Seattle WA

H03F 358

330 43, 330124 R, 330127

A microwave tube system for use with a spacecraft telecommunication system is provided. The system includes a traveling wave tube subsystem, a high voltage converter subsystem, and a low voltage converter subsystem. The traveling wave tube subsystem includes a plurality of traveling wave tubes. The high voltage converter subsystem powers the traveling wave tube subsystem. The high voltage converter subsystem includes a plurality of high voltage converter members that are paired with the traveling wave tubes on a one-to-one basis. The low voltage converter subsystem is a central power conditioner subsystem including a plurality of low voltage power conditioners that are connected in parallel to one another. A common power output of the central power conditioner subsystem is received by the high voltage converter members which in turn power the traveling wave tubes that are paired with the high voltage converters. Such configured central power conditioner subsystem requires less circuitry and fewer low voltage power conditioners thereby resulting in lower spacecraft weight and volume.

7138860, Nov 21, 2006

Nov 12, 2004

10/904498

John E Eng - Buena Park CA, US

The Boeing Company - Chicago IL

H03F 3/58

330 43, 315 35

A power control system for a satellite receiving radio-frequency signals includes a digital processor and a traveling wave tube amplifier system and corresponding traveling wave tube. An anode voltage of the traveling wave tube amplifier system is used to modulate or saturate the current of the electron beam of the traveling wave tube so that the output power of the traveling wave tube amplifier system, from the saturated electron beam, is proportional to a waveform envelope of the radio-frequency signals. The digital processor controls anode and RF input signal amplitudes to the traveling wave tube and predicts necessary corrections.

7170368, Jan 30, 2007

Nov 5, 2004

10/983282

John E. Eng - Buena Park CA, US

The Boeing Company - Chicago IL

H01P 5/12

333125, 333248

An apparatuses and methods for phase matching power combined signals are described. A typical apparatus includes at least a waveguide portion in at least a first branch conducting a first electromagnetic signal of a combiner, the waveguide portion having an effective size and a thermal control system effecting a temperature change in the waveguide portion to alter the effective size. Altering the effective size of the waveguide portion adjusts phase matching between the first electromagnetic signal of the first branch and at least a second electromagnetic signal of a second branch of the combiner. High thermal expansion coefficient materials including silver plated polyetherimide can be used. In addition, composite materials having anisotropic thermal expansion may be used.

7221907, May 22, 2007

Feb 12, 2003

10/365359

John E. Eng - Buena Park CA, US
Donald J. Mirrione - Gilbert AZ, US
Dale H. Claxton - Encino CA, US
Brian J. Behler - Lomita CA, US
James Lee - Monterey Park CA, US

The Boeing Company - Chicago IL

H04B 7/185

455 121, 455 132, 455 133, 455 134, 370318

A power system for a satellite includes a high power amplifier that has a control input. The high power amplifier has a minimum effective isotropic radiated power. A controller is coupled to the control input. The controller generates a control signal to adjust a saturated power output of the high power amplifier to the minimum effective isotropic radiated power.

7484693, Feb 3, 2009

Sep 17, 2003

10/666664

John E. Eng - Buena Park CA, US

The Boeing Company - Chicago IL

B64G 1/44

2441733, 2441581

A system for single wire secondary distribution comprising a spacecraft platform; a central bus interface unit coupled to the spacecraft platform; a payload unit coupled to the central bus interface unit; and a centralized power supply for powering the central bus interface unit and the payload unit; wherein the spacecraft platform provides a command to the central bus interface unit; wherein the central bus interface unit interrupts the power to the payload unit in a manner corresponding to the commands received by the central bus interface unit; wherein the payload unit decodes the interruption to the power and executes the command from the spacecraft platform.

8245979, Aug 21, 2012

Dec 12, 2008

12/333978

John E. Eng - Buena Park CA, US

The Boeing Company - Chicago IL

B64G 1/00

2441581, 244 751, 2441291, 244227, 34087019, 34087024, 340538, 3408558

A system for single wire secondary distribution comprising a spacecraft platform; a central bus interface unit coupled to the spacecraft platform; a payload unit coupled to the central bus interface unit; and a centralized power supply for powering the central bus interface unit and the payload unit; wherein the spacecraft platform provides a command to the central bus interface unit; wherein the central bus interface unit interrupts the power to the payload unit in a manner corresponding to the commands received by the central bus interface unit; wherein the payload unit decodes the interruption to the power and executes the command from the spacecraft platform.

2007014, Jun 21, 2007

Feb 2, 2007

11/670418

JOHN ENG - SUNNYVALE CA, US

H04J 1/00
H04J 3/16

370485000, 370437000

A method and system are disclosed for enabling full-service communications between a full-service cable modem termination system (fsCMTS) and a plurality of full-service cable modems (fsCMs) for a conventional two-way hybrid fiber-coax (HFC) cable television network. Full-service communications include data, voice and video. Video includes broadcast quality MPEG-2 transport packet streams and Internet Protocol media streams. A multi-channel full-service media-access-control (fsMAC) coordinates the access to the shared upstream and downstream channels. Several MAC management messages are defined to enable a multi-channel full-service MAC domain to facilitate sharing of an arbitrary number of channels and to enable packet-by-packet true seamless channel change. Multiple upstream channels can be used in various ways to best optimize the use of the spectrum for meeting the quality-of-services needed by different services.

4785207, Nov 15, 1988

Jan 21, 1987

7/005716

John E. Eng - Buena Park CA

Hughes Aircraft Company - Los Angeles CA

H03K 1716

307577

A leakage regulator for use with switching power supplies which include a field effect transistor (FET) is disclosed. The leakage regulator comprises a bias circuit coupled in a feedback arrangement with the FET to provide a self-generated bias voltage. The bias circuit includes a current transformer coupled to receive a drain-source leakage current. A bias voltage is generated from the transformed leakage current and this bias voltage is applied to the FET gate to help decrease the leakage current.