Communication satellite in a satellite communication system...

Details Communication satellite in a satellite communication system... Communication satellite in a satellite communication system...

2005-09-20

2005-09-20

Trinh, Sonny (Department: 2687)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S012100, C455S447000, C455S446000, C455S453000

Reexamination Certificate

active

06947740

ABSTRACT:
A communication satellite in a satellite communication system has multiple communication signal transmit horns or other transmit antenna (e.g., phased arrays) that transmit communication downlink signals to multiple corresponding terrestrial communication cells. The satellite includes first and second contiguous, high aspect ratio arrangements of the transmit horns. The first and second arrangements of transmit horns have allocated to them respective first and second orthogonal communication band segments. The first communication band segment is shared and fully allocable among the transmit horns of the first arrangement, and the second communication band segment is shared and fully allocable among the transmit horns of the second arrangement. The high aspect ratios of the first and second transmit horn arrangements result in corresponding high aspect ratios for terrestrial communication cell arrangements that can utilize well the allocable bandwidth of each communication band segment. The shared and fully allocable bandwidth of the communication band segments for each arrangement of transmit horns avoids the chronic under-capacity and over-capacity that can arise with fixed bandwidth allocations to adjacent cells.

REFERENCES:
patent: 5771449 (1998-06-01), Blasing et al.
patent: 5963175 (1999-10-01), Burr
patent: 6157811 (2000-12-01), Dent
patent: 6587687 (2003-07-01), Wiedeman
patent: 2002/0032003 (2002-03-01), Avitzour et al.
patent: 2003/0156570 (2003-08-01), Alamouti et al.

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