发明名称 |
A METHOD AND AN ARRANGEMENT IN AN ANALOG LINE INTERFACE CIRCUIT |
摘要 |
In a line interface circuit for analog broadband applications, a terminating impedance towards a two-wire twisted copper line is set by sensing the line voltage, amplifying the sensed line voltage by a voltage amplification factor, converting the amplified voltage into a current, buffering and amplifying the current by a current amplification factor, injecting the amplified current onto the line, and adjusting the voltage amplification factor and/or the current amplification factor to set the terminating impedance to a desired value.
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申请公布号 |
WO9950970(A1) |
申请公布日期 |
1999.10.07 |
申请号 |
WO1999SE00437 |
申请日期 |
1999.03.19 |
申请人 |
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) |
发明人 |
BARKAROE, STEFAN;RANDAHL, TORBJOERN |
分类号 |
H03H11/28;H04B3/02;H04L25/02;(IPC1-7):H04B3/03 |
主分类号 |
H03H11/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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