Broadband and baseband LAN
First Claim
1. An improved communications system for transmitting and receiving broadband and baseband information comprising:
- a backbone communications network, said backbone communications network having a first sub-assembly network dedicated to transmit broadband signals representative of broadband information, a second sub-assembly network dedicated to transmit baseband signals representative of baseband information;
a distribution communications network for simultaneously transmitting and/or receiving broadband signals and baseband signals; and
a circuit arrangement coupling the backbone communications network and the distribution communications network, said circuit arrangement having a filter circuit means connected in tandem with a broadband transformer with the windings of said transformer causing the baseband signals to be transmitted in a balanced mode and the broadband signals to be transmitted in an equally unbalanced mode.
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Accused Products
Abstract
Described is a communications system for transmitting baseband and broadband signals simultaneously. The system is ideally suited for interconnecting different types of data terminal equipment (DTE) within a building or limited geographical area. The system includes a backbone communications network formed from a plurality of independent communications systems. Each of the plurality of independent communications systems is dedicated to transmit either the baseband signals or the broadband signals. A Filter Coupler (FC) network combines and separates the two different type of signals at the distribution level. One embodiment of the FC includes a filter network coupled in tandem with a high frequency transformer. In an alternate embodiment the FC includes a balun transformer coupled to a directional coupler transformer.
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Citations
26 Claims
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1. An improved communications system for transmitting and receiving broadband and baseband information comprising:
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a backbone communications network, said backbone communications network having a first sub-assembly network dedicated to transmit broadband signals representative of broadband information, a second sub-assembly network dedicated to transmit baseband signals representative of baseband information; a distribution communications network for simultaneously transmitting and/or receiving broadband signals and baseband signals; and a circuit arrangement coupling the backbone communications network and the distribution communications network, said circuit arrangement having a filter circuit means connected in tandem with a broadband transformer with the windings of said transformer causing the baseband signals to be transmitted in a balanced mode and the broadband signals to be transmitted in an equally unbalanced mode. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. In a communications system having a broadband network for transmitting high frequency electrical signals and a baseband network for transmitting relatively low frequency electrical signals an improved distribution communications network system for distributing the electrical signal comprising:
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at least a length of communications media interconnecting an office with a wiring closet; a pair of F-coupler modules one of each connected to opposite ends of the communications media, with each F-coupler module including a filter circuit connected in tandem with a broadband transformer with windings of said broadband transformer causing the high frequency electrical signals to be transmitted in an unbalanced mode and the relatively low frequency signals are transmitted in a balanced mode on said length of communications media.
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9. An improved circuit arrangement for transmitting and receiving baseband and/or broadband electrical signals from a common communications media comprising:
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a filter circuit configured to form a first input port for the baseband electrical signals; a broadband transformer connected in tandem with the filter circuit, said broadband transformer having a plurality of windings arranged on a supporting corre with one of said windings forming a second port for receiving the broadband signals and the other windings forming an output port and causing the baseband electrical signals to be transmitted and delivered as balanced signals at the output port and the broadband electrical signals to be transmitted and delivered as unbalanced signals at said output port. - View Dependent Claims (10, 26)
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11. In a communications system having independent backbone networks for transmitting and/or receiving baseband signals and/or broadband signals and a distribution network for distributing the broadband and/or baseband signals into offices, a circuit module for multiplexing and/or demultiplexing broadband and/or baseband signals on the distribution network comprising:
- a first means coupled to said distribution network, said means receiving broadband signals and causing the broadband signals to propagate in an unbalanced mode on said distribution network; and
a second means coupled to the first means and operable for receiving the baseband signals and for propagating said baseband signals in a balanced mode over said distribution network whereby the first and second means cause the broadband signals and the baseband signals to propagate simultaneously on said distribution network. - View Dependent Claims (12, 13, 14, 15, 16, 17)
- a first means coupled to said distribution network, said means receiving broadband signals and causing the broadband signals to propagate in an unbalanced mode on said distribution network; and
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18. An improved communications system for transmitting and receiving broadband and baseband information comprising:
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a backbone communications network, said backbone communications network having a first sub-assembly network dedicated to transmit broadband signals representative of broadband information, a second sub-assembly network coupled to the first sub-assembly network and dedicated to tranamit baseband signals representative of baseband information; a distribution communications network for simultaneously transmitting and/or receiving a broadband signals and baseband signals; and a circuit arrangement interconnecting the backbone communications network and the distribution communications network, said circuit arrangement having a first circuit means coupled in tandem with a second circuit means with the first and second circuit means coacting so that baseband signals are propagated on the distribution communications network in a balanced mode and the broadband signals are propagated in an unbalanced mode.
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19. In a communications system having a broadband network for transmitting high frequency electrical signals and a baseband network for transmitting relatively low frequency electrical signals an improved distribution communications network for distributing the electrical signals comprising:
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at least a length of communications media interconnecting an office with a wiring closet; a pair of F-coupler modules one of each connected to opposite ends of the communications media, with each F-coupler module including a balun transformer connected in tandem with a directional transformer with selected windings of said transformers causing the high frequency electrical signals to be transmitted in an unbalanced mode and the relatively low frequency signals to be transmitted in a balanced mode on said length of communications media.
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20. An improved circuit arrangement for transmitting and receiving baseband and/or broadband electrical signals from a common communications media comprising:
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a balun transformer configured to form a first input port for the baseband electrical signals; a directional transformer connected in tandem with the balun transformer, said balun transformer having a supporting core, three windings N1, N2 and N3 arranged thereon with one of said windings forming a second single ended port for the broadband signals and the other two windings forming an output port and coacting with windings of the balun transformer so that baseband electrical signals are propagates as balanced signals at the output port and the broadband electrical signals are propagated as unbalanced signals at said second port.
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21. An improved communicatins system for transmitting and receiving broadband and baseband information comprising:
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a backbone communications network, said backbone communications network having a first sub-assembly network dedicated to transmit broadband signals representative of broadband information, a second sub-assembly network coupled to the first sub-assembly network and dedicated to transmit baseband signals representative of baseband information; a distribution communications network for simultaneously transmitting and/or receiving broadband signals and baseband signals; and a circuit arrangement coupled the backbone communications network and the distribution communications network, said circuit arrangement having a balun transformer connected in tandem with a directional transformer with windings of said transformers coacting so that baseband signals are distributed in a balanced mode and the broadband signals are distributed in an equally unbalanced mode. - View Dependent Claims (24)
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22. In a communications system having a first network for transmitting high frequency electrical signals and a second network for transmitting high frequency electrical signals an improved distribution communications network system for distributing the electrical signals comprising:
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at least a length of communications media; a pair of F-coupler modules one of each connected to opposite ends of the communications media, with each F-coupler module including a balun transformer connected in tandem with a directional coupler transformer with windings of said directional coupler transformer and said balun transformer poled and arranged in the path of the communications media so that high frequency electrical signals from said first and second networks are transmitted in an unbalanced mode and balanced mode with said high frequency electrical signals propagating simultaneously and occupying the same frequency bands on said communications media. - View Dependent Claims (23)
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25. An improved communicatons system for transmitting and receiving broadband and baseband information comprising:
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a backbone communications network, said backbone communications network having a first sub-assembly network dedicated to transmit broadband electrical signals representative of broadband information, a second sub-assembly network coupled to the first sub-assembly network and dedicated to transmit baseband electrical signals representative of baseband information; means associated with the backbone communications network and operable for partitioning and distributing the broadband signals; a distribution communications network for simultaneously transmitting and/or receiving broadband signals and baseband signals; and a circuit arrangement coupling the backbone communications network and the distribution communications network, said circuit arrangement having a balun transformer connected in tandem with a directional coupler transformer with windings of said transformers coacting so that the circuit arrangement exercises its filtering characteristics on base band electrical signals and exercises its directivity characteristics on broad band electrical signals.
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Specification