Patent ID: 6239667
Filing Date: 2001-05-29
Classification: H04B,H04L

Abstract:
An attenuation equalizer, for compensating attenuation characteristics of a transmission line, comprising:a first node and a second node,a first frequency filter unit coupled to the first node and/or to the second node for frequency filtering an applied signal,a first current source coupled to the first node in order to control a current provided by the first current source to the second node,a third node, a second frequency filter unit, a second current source, and a switching unit;wherein:the second frequency filter unit is coupled (1) to the first node when the first frequency filter unit is also coupled to the first node, or (2) to the third node when the first frequency filter unit is coupled to the second node,the switching unit is adapted to switch between the potential at the second node and the third node and provides an output thereof at the first node,the first current source is coupled to the first node in order to control a current provided to the second node, andthe second current source is coupled to the first node in order to control a current provided to the third node.