Ruggedized analog front-end for a network communicative device in a railway-like environment
AssigneeAlstom Canada Inc.
InventorJean Beaucage
Life of this patent
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Abstract
A ruggedized analog front-end for interconnecting a network communicative device to a two-conductor based network operable in a train-like or other harsh environment. The front-end has a coupling circuit having first and second coupling channels providing isolation, impedance matching and energy transfer between a common mode filter circuit connectable to the two-conductor based network, and an amplifier and an attenuator respectively connectable to output and input of the network communicative device. The front-end has a power supply circuit for operative power supply of electronic components of the analog front-end.
Claims24
A ruggedized analog front-end for interconnecting a network communicative device to a two-conductor based network, comprising:
- input and output leads for connection to the network communicative device;
- network leads for connection to the two-conductor based network;
- a coupling circuit having first, second and third terminal sets, a first coupling channel between the first and second terminal sets, and a second coupling channel between the first and third terminal sets, the first and second coupling channels providing isolation, impedance matching and energy transfer between corresponding ones of the terminal sets;
- an amplifier having an input connected to the input leads, and an output connected to the second terminal set of the coupling circuit;
- a common mode filter circuit coupled between the first terminal set of the coupling circuit and the network leads;
- an attenuator having an input connected to the third terminal set of the coupling circuit, and an output connected to the output leads;
- and a power supply circuit for operative power supply of electronic components of the analog front-end.
Dependencies are inferred from the claim text.