Ronald Chan

6441800, Aug 27, 2002

May 22, 2001

09/862632

Ronald Y. Chan - Torrance CA
Daniel R. Lane - Santa Monica CA

TRW Inc. - Redondo Beach CA

H01Q 2100

343879, 343765, 343770, 244158 R

An antenna system for a satellite including a gimbal device, such as a bi-axial gimbal, that employs a first uni-axial gimbal providing movement in one direction and a second uni-axial gimbal providing movement in a perpendicular direction. The first gimbal is mounted to a platform bracket, which is part of a moveable platform. The first gimbal is also mounted to the second gimbal, and the second gimbal is mounted to a satellite bracket secured to the satellite. Both a receive antenna array and a transmit antenna array are mounted to the moveable platform. Therefore, movement of the first gimbal causes the combination of the receive and transmit antenna arrays to move in one direction, and movement of the second gimbal causes the combination of the receive and transmit antenna arrays to move in the perpendicular direction.

6504514, Jan 7, 2003

Aug 28, 2001

09/941413

Brent T. Toland - Manhattan Beach CA
Youn H. Choung - Rolling Hills Estates CA
Vrage Minassian - Burbank CA
Ronald Y. Chan - Torrance CA
James S. Hamada - Rancho Palos Verdes CA

TRW Inc. - Redondo Beach CA

H01Q 1300

343781P, 343786, 343DIG 2

A satellite antenna system employing a dual-band feed horn and dual-band beam forming network. The feed horn provides a common aperture for both satellite uplink and downlink communications signal. The feed horn includes corrugations on an inside surface defining two sets of alternating channels having different depths to create circularly symmetric beams for the uplink and downlink signals. The antenna system includes at least one reflector, where the reflector shape, position, and the configuration of the feed horn, is determined so that the mainlobe of the lower frequency downlink feed signal illuminates the entire reflector, and the mainlobe of the higher frequency uplink feed signal illuminates an inner portion of the reflector. The first sidelobes of the higher frequency feed signal illuminate the outer portion of the reflector so that the uplink and downlink antenna signals have the same beamwidth, and thus cover the same cell size on the Earth.

62688359, Jul 31, 2001

Jan 7, 2000

9/480699

Brent T. Toland - Manhattan Beach CA
L. Dwight Gilger - Torrance CA
Ronald Y. Chan - Torrance CA
Alon S. Barlevy - Cerritos CA
Shinobu J. Hamada - Rancho Palos Verdes CA

TRW Inc. - Redondo Beach CA

H01Q 2100

343781P

A deployable phased-array-of-reflectors antenna includes individual reflectors and feed arrays. Each feed array is disposed above a corresponding individual reflector. The individual reflector antennas are preferably disposed adjacent to one another (e. g. , on a hexagonal lattice) to form a phased array antenna using the individual reflectors antennas as elements. Phase and amplitude control electronics are coupled to each reflector antenna to provide steering for the signal energy coupled between the reflectors and the feed arrays. Switching electronics are coupled to the feed arrays and selectively activate and deactivate beam forming clusters of feeds in the feed arrays. A method for generating a steerable antenna pattern couples signal energy through a beamforming section to form steered signal energy. Next, the method couples the steered signal energy between a phased array of reflector antennas. The method selectively activates a first feed cluster for a first reflector, a second feed cluster for a second reflector, and so on, until feed clusters are activated in all of the reflectors in the array.

20150222005, Aug 6, 2015

Feb 3, 2015

14/613061

- Irvine CA, US
Pascal Finkenbeiner - Torrance CA, US
Ronald Chan - Aliso Viejo CA, US

BROADCOM CORPORATION - Irvine CA

H01Q 1/12

Systems and methods for use in evaluating a position of a satellite dish are provided. One system includes an antenna configured to receive an input satellite signal at a current position of a satellite dish and automatic gain control circuitry configured to apply a variable gain to the input satellite signal to produce a modified signal at a desired level. The system further includes power control circuitry configured to generate an output signal using the modified signal. The power control circuitry is configured to adjust a power level of the output signal using the variable gain applied to the input satellite signal such that the output signal is proportional to the input signal.