发明名称 |
Temperature-compensated logarithmic detector having a wide dynamic range |
摘要 |
An IF amplifier/log detector with a modular architecture includes a plurality of voltage amplifiers, a plurality of rectifiers, a plurality of voltage-to-current converters and a current summing circuit. Each amplifier has a first differential transistor pair driven by a first current proportional to the temperature to fix the gain. Each converter includes a second differential transistor pair driven by a current proportional to the temperature and inversely proportional to a process parameter, and a third differential transistor pair driven by a third current inversely proportional to the process parameter. In this manner a circuit having improved performance with variations in temperature and process parameters is obtained.
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申请公布号 |
US5296761(A) |
申请公布日期 |
1994.03.22 |
申请号 |
US19920974631 |
申请日期 |
1992.11.23 |
申请人 |
NORTH AMERICAN PHILIPS CORPORATION |
发明人 |
FOTOWAT-AHMADY, ALI;NAVID, NASROLLAH S. |
分类号 |
G01D3/02;H03G7/00;H03G7/06;H03G11/08;H04B1/38;H04B7/26;(IPC1-7):H03F1/30 |
主分类号 |
G01D3/02 |
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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