Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Patent
1989-12-21
1991-06-11
Eisenzopf, Reinhard J.
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
370 74, 455618, H04B 1000
Patent
active
050239457
ABSTRACT:
An optical transmission system includes a power splitter for dividing an RF input signal into a plurality of intermediate signals each assigned to a respective one of a plurality of parallel optic links. Each link optically transmits its respective intermediate RF signal over a respective fiber line before being detected at a receiver end. The detected signals are combined by an RF power combiner into an output signal having an enhanced signal to noise ratio that is better by 10 log n dB over that of a single link, where n is the number of parallel links. In order to permit operation at arbitrarily high frequencies, a pilot tone delay equalization circuit is coupled to each link at the receiver end for equalizing the delay variations between the various fiber paths.
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William H. Lambert, "Second-Order Distortion in CATV Push-Pull Amplifiers", Proc. of the IEEE, vol. 58, No. 7 (1970), pp. 1057-1062.
Eisenzopf Reinhard J.
GTE Laboratories Incorporated
Lohmann, III Victor F.
Negash Kinfe-Michael
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