发明名称 |
Balancing impedance circuit |
摘要 |
A class of electronic hybrids is disclosed in which the line balancing impedance is made frequency-sensitive in order to better match the frequency characteristic of the connected line and is made voltage-controlled in order that a single network can be used to match a variety of different gauges of telephone cable pairs. The matching impedances are synthesized utilizing RC networks and the voltage control is realized with two-node Miller effect impedance multiplication circuits realized by long-tailed pairs for synthesizing hyperbolic tangent impedance functions under the control of a voltage.
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申请公布号 |
US4181824(A) |
申请公布日期 |
1980.01.01 |
申请号 |
US19780949576 |
申请日期 |
1978.10.10 |
申请人 |
BELL TELEPHONE LABORATORIES INC |
发明人 |
SEIDEL, HAROLD |
分类号 |
H04B3/03;H04B1/58;H04B3/40;H04B7/14;(IPC1-7):H04B3/40 |
主分类号 |
H04B3/03 |
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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