Patent ID: 7801166
Filing Date: 2010-09-21
Classification: B61L,H04L

Abstract:
1. 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.