Satellite signal frequency translation and stacking

Details Satellite signal frequency translation and stacking Satellite signal frequency translation and stacking

2008-01-19

2011-12-27

Maung, Nay (Department: 2618)

Telecommunications

Wireless distribution system

Receiver for satellite broadcast

C455S003010, C455S013300, C455S022000

Reexamination Certificate

active

08086170

ABSTRACT:
An outdoor satellite receiving unit (ODU) receives several independent satellite signals, selects two signals with a switch matrix, downconverts the two signals to a bandstacked signal with a high and a low band signal, and outputs the bandstacked signal on the same cable to receiver units. Several satellite signals can be selected in groups of two or more and output to independent receiver units. Signal selecting is performed at the received radio frequency (RF) and bandstacking is performed with a single downconversion step to an intermediate frequency (IF). Channel stacking on the same cable of more than two channels from several satellites can be achieved by using frequency agile downconverters and bandpass filters prior to combining at the IF output. A slow transitioning switch minimizes signal disturbances when switching and maintains input impedance at a constant value.

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