US 2010/0142606 A1 · Transmission line loss compensation circuit and transmission line loss compensation method

Abstract

A transmission line loss compensation circuit and transmission line loss compensation method is provided. The transmission line loss compensation circuit includes a linear equalizer that compensates for a transmission line loss of high frequency components, a high-pass filter that extracts high frequency components from an output of the linear equalizer, a peak detector that compares the peak voltage of a high-pass filter output to first and second reference voltages, and a control circuit that controls the compensation intensity of the linear equalizer based on the detection results of the peak detector so that the peak voltage becomes an intermediate voltage between the first reference voltage and the second reference voltage.

Claims15

Dependent claims

A transmission line loss compensation circuit comprising:

a linear equalizer that compensates for a transmission line loss of high frequency components;
a high-pass filter that extracts high frequency components from an output of said linear equalizer;
a peak detector that compares a peak voltage of an output of said high-pass filter to first and second reference voltages;
and
a control circuit that controls compensation intensity of said linear equalizer based on detection results of said peak detector so that said peak voltage becomes an intermediate voltage between said first reference voltage and said second reference voltage.

2 more elements

A transmission line loss compensation method for compensating for a transmission line loss of high frequency components using a linear equalizer, the method comprising:

detecting a peak voltage of high frequency components in an output signal of said linear equalizer and comparing said peak voltage with a first reference voltage and a second reference voltage;
increasing compensation intensity of said linear equalizer when an absolute value of said peak voltage is smaller than either of absolute values of said first and second reference voltages;
decreasing the compensation intensity of said linear equalizer when an absolute value of said peak voltage is larger than either of absolute values of said first and second reference voltages;
and
maintaining the compensation intensity of said linear equalizer when said peak voltage is an intermediate voltage between said first and second reference voltages.

2 more elements

Dependencies are inferred from the claim text.

Transmission line loss compensation circuit and transmission line loss compensation method

Life of this patent

Transmission line loss compensation circuit and transmission line loss compensation method

Life of this patent

Abstract

Claims15