Broadband logarithmic detector with high dynamic range
AssigneeNanjing Milliway Microelectronics Technology Co., Ltd.
InventorsJianjun Wu, Mengjiao Si, Ying Zhang
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Abstract
The invention discloses a broadband logarithmic detector with high dynamic range, comprising a low noise amplifier, a compensate detection unit, a current summation and driving unit, an N-stage clipper amplifier and an N-stage detection unit. The invention improves the detection sensibility of the overall detector by adding a low noise amplifier before the first-stage clipper amplifier and extends the dynamic detection range of the overall detector through combination of the low noise amplifier and the compensate detection unit.
Claims10
A broadband logarithmic detector with high dynamic range, comprising:
- a low noise amplifier, a compensate detection unit, a current summation and driving unit, an N-stage clipper amplifier and an N-stage detection unit, with N≥2;
- wherein the input of a first-stage clipper amplifier is connected to the output of the low noise amplifier, the input of the low noise amplifier serves as the input of the overall detector, the input of the low noise amplifier is further connected to the input of the compensate detection unit, the output of the compensate detection unit is connected to the input of the current summation and driving unit, the output of the ith-stage clipper amplifier is connected respectively to the input of the (i+1)th-stage clipper amplifier and the input of the ith-stage detection unit, with 1≤i≤N−1, the output of the i-stage detection unit is connected to the input of the current summation and driving unit, the output of the Nth-stage clipper amplifier is connected to the input of the Nth-stage detection unit, the output of the Nth-stage detection unit is connected to the input of the current summation and driving unit, and the output of the current summation and driving unit serves as the output of the overall detector.
Dependencies are inferred from the claim text.