Beam hopping self addressed packet switched communication system with multiple beam array antenna

US6944140B1 · kind B1 · utility

Assignee

• NORTHROP GRUMMAN CORPORATION · US

Inventors

• Stuart T. Linsky · Rancho Palos Verdes, US
• Harvey L. Berger · Redondo Beach, US
• Dennis A. Nivens · Hermosa Beach, US
• Garrick Harmon · Newport Beach, US
• Fred C. Tramm · Rancho Palos Verdes, US
• Robert W. White · Monroeville, US

Key dates

• Filing date: Jun 21, 2000
• Grant date: Sep 13, 2005
• Expiry date: Aug 1, 2022

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B7/2041
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A data routing subsystem (200) for a communication satellite includes an inbound module (602) that accepts demodulated uplink data. The inbound module (602) includes a routing table (702) that stores queue tags (714) specifying downlink beam hop locations (302, 304) for the uplink data. The subsystem (200) also includes a self addressed packet switch (608) having an input port coupled to the inbound module (602), and an outbound module (610) coupled to an output port of the switch (608). A memory (804) in the outbound module (610) stores the uplink data in accordance with the downlink beam hop locations (302, 304). A multiple beam array antenna (116–122) is coupled to the outbound module (610). The multiple beam array antenna (116-122) includes a first feed element (116) assigned to a first downlink beam hop location (302) and a second feed element (118) assigned to a second downlink beam hop location (304).