发明名称 |
Impedance-matching circuit using negative low-noise resistance |
摘要 |
A circuit is disclosed for impedance matching an electrical signal-generating transducer to an electrical signal-processing amplifier while substantially retaining both the original signal-to-noise power ratio and the original signal amplitude at the input to the amplifier. A load resistance of a value substantially equal to twice the characteristic resistance of the transducer is coupled across the amplifier input, while a negative low-noise resistance approximately equal in magnitude to the source resistance is coupled in series with the load resistance. A transmission line having a characteristic impedance approximately equal to the transducer resistance is coupled between the transducer output and the series-coupled load resistance and negative resistance.
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申请公布号 |
US4180786(A) |
申请公布日期 |
1979.12.25 |
申请号 |
US19780929582 |
申请日期 |
1978.07.31 |
申请人 |
HUGHES AIRCRAFT |
发明人 |
FORWARD, ROBERT L;THURMOND, GARY D |
分类号 |
H03H11/28;(IPC1-7):H03H7/38 |
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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