摘要 |
<p>A hybrid circuit for communicating information over a telecommunications line is configured as a filter for filtering at the receiver input signals at predetermined frequencies appearing on the transmitter output and the telecommunications line. The circuit forms a capacitive divider for scaling signals appearing at the transmitter output and canceling the scaled signals at the receiver input with related signals appearing on the telecommunications line. For communicating using the ADSL protocol, the filter circuit may be a first order high pass filter.</p> |