Uplink frequency multiplexing system

Details Uplink frequency multiplexing system Uplink frequency multiplexing system

2011-01-11

2011-01-11

Nguyen, Tu X (Department: 2618)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C342S368000

Reexamination Certificate

active

07869802

ABSTRACT:
A satellite-borne transponder for two or more uplink service areas, includes uplink antennae, a low noise amplifier and a converter for each uplink antenna, input filters, amplification chains, each amplification chain including a channel amplifier, a high power amplifier, and an output filter, and a downlink antenna for an associated downlink service area. The transponder associates uplink antennae to an uplink service area, the number of antennae being determined by a preset Figure of Merit for each uplink service area. The transponder also includes at least one input multiplexer including a passband filter for each reception chains, each reception chain including an uplink antenna, a low noise amplifier, and a converter linked to the multiplexer.

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patent: 6173155 (2001-01-01), Norin
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patent: 2783377 (2000-03-01), None

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