发明名称 |
Temperature-compensated small signal peak detector |
摘要 |
A system and method for temperature-compensated small signal peak detection. A small amplitude signal peak detector includes an exponential operator for generating a modulated signal through the application of an exponential function to the input signal. The peak detector also includes an averaging circuit for obtaining the average value of the modulated signal and an inverting offset stage for inverting the signal and removing an offset component. The resulting signal is directly proportional to the peak value of the input signal. The peak detector further includes a temperature compensation circuit for canceling the temperature-dependent effects introduced by the exponential operator and averaging means. The temperature compensation circuit is a thermistor with temperature-dependent characteristics matched to the temperature-dependent characteristics of the circuit when operated without a temperature compensation circuit.
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申请公布号 |
US6489812(B1) |
申请公布日期 |
2002.12.03 |
申请号 |
US20010975965 |
申请日期 |
2001.10.15 |
申请人 |
NORTEL NETWORKS LIMITED |
发明人 |
SAVARD CHRISTIAN S.;BANIC DEJAN;DOUNETAS JACK |
分类号 |
G01R19/25;(IPC1-7):G01R19/00 |
主分类号 |
G01R19/25 |
代理机构 |
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