Multiplex communications – Communication techniques for information carried in plural... – Combining or distributing information via frequency channels
Patent
1992-06-29
1999-04-06
Vu, Huy D.
Multiplex communications
Communication techniques for information carried in plural...
Combining or distributing information via frequency channels
333109, H04J 102
Patent
active
058927735
ABSTRACT:
A bidirectional converter/interface for connecting several two-way broadb RF cables to a single pair of optical fibers is provided. In the reception mode, a broadband RF carrier of an optical conductor signal is directed to a plurality of bandpass filter/block converter combinations. These filter/converter combinations segment the broadband RF carrier into predetermined RF bands carrying the information. Each segmented band is then shifted (either up or down) to the receiving band frequency utilized by each of the RF systems. In the transmission mode, each transmitted signal from one of the RF systems is passed to a return path block converter/bandpass filter combination that shifts the entire transmitted band to a predetermined band. The predetermined bands are chosen such that each is a unique, non-overlapping band associated with a particular one of the RF systems. These unique bands are then combined into a single RF broadband signal that is converted to an optical signal and carried by a second optical conductor. The duplex operation of the RF systems is supported by the use of high split diplex filters. The diplex filters pass the forward fed receiving RF frequency and bandwidth signal to the RF systems, and pass the return fed transmitting RF frequency and bandwidth signal from the RF systems through to the return path.
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Bechtel, Esq. James B.
The United States of America as represented by the Secretary of
Vu Huy D.
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