The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 28, 2004
Filed:
Feb. 06, 2002
Harold A. Rosen, Santa Monica, CA (US);
Todd K. Citron, Pacific Palisades, CA (US);
Steven O. Lane, Rolling Hills Estates, CA (US);
James D. Thompson, Manhattan Beach, CA (US);
Arnold L. Berman, Los Angeles, CA (US);
Robert E. Vaughan, Redondo Beach, CA (US);
The Boeing Company, Chicago, IL (US);
Abstract
A system and method for adjusting satellite communication signal transmit power for signals transmitted to a localized region within a satellite coverage area utilize real-time information on weather conditions ( ) and/or actual path losses ( ) within the localized regions to adjust the effective isotropic radiated power (EIRP) of the satellite beams ( ) to minimize the total radio frequency (RF) power required for transmission. The transmission system may be realized using a variety of antenna types for transmitting spot beams and/or area coverage beams. Representative antenna implementations include multi-beam antennas having a low-level beamforming network and hybrid matrix amplifier system, phased-array with independent input amplitude control and beamsteering for each beam, and a phased-array feeding a confocal imaging system for single broadcast beam per polarization. The present invention allows for the reduction of RF transmit power to achieve the same communications performance enabling either increases in satellite functionality and/or an increase in total capacity of the satellite communication system.