Switchless combining of multi-carrier coherent and...

Details Switchless combining of multi-carrier coherent and... Switchless combining of multi-carrier coherent and...

2005-04-12

2005-04-12

Shingleton, Michael B. (Department: 2817)

Modulators

Phase modulator

Including amplitude modulator

C455S326000, C455S561000, C455S327000, C333S100000, C333S109000

Reexamination Certificate

active

06879220

ABSTRACT:
The invention is a combiner and a method for selectively combining modulated signals. The combiner includes a first modulator (12) with a selective input which receives at least one input signal and a first carrier signal and which outputs a first output modulated with the first carrier signal; a second modulator (14) with a selective input which receives at least one input signal and a second carrier signal and which outputs a second output modulated with the second carrier signal; means for combining (24′) the first and second amplified output signals to provide a combined output; and wherein the first and second carrier signals are selectably coherent or incoherent with the selection of first and second coherent carrier signals causing the combined output to comprise a single carrier of higher power and the selection of incoherent carrier signals causing the combined output to comprise two distinguishable carriers of lower power.

REFERENCES:
patent: 5703530 (1997-12-01), Sato et al.

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