AMPLIFIER FOR UNSHIELDED TWISTED PAIR WIRE SIGNALS,申请号KR20077003365-传众专利搜索

AMPLIFIER FOR UNSHIELDED TWISTED PAIR WIRE SIGNALS

申请公布号：KR20070034622(A)

申请号：KR20077003365

申请日期：2005.07.11

申请公布日期：2007.03.28

分类号：H04M3/00;H04L12/66;H04M1/00

主分类号：H04M3/00

摘要：An analog electronic circuit is placed between the central office of a telecommunications provider and the customer premises equipment of a digital subscriber line system which uses unshielded twisted pair wires ("UTP"). The electronic circuit separates the downlink signals from the uplink signals with a first mixer. The voice signals, if present, are routed around the electronic circuit unmodified. The downlink signals are amplified, filtered, amplified again with a one or more peaking equalization amplifier, then amplified with drivers which provide the power to drive the downlink signal through a second mixer onto the UTP lines to the customer premises equipment. The electronic circuit separates the uplink signals from the downlink signals with the second mixer. The uplink signals are amplified, filtered, and amplified again, then driven onto the UTP connected with the central office through the first mixer.