The Design of Cased Hole Formation Resistivity Logging of Preamplifier Circuits
ITCS '10 Proceedings of the 2010 Second International Conference on Information Technology and Computer Science（2010）
摘要
In view of the signals of the cased hole formation resistivity logging which is extremely low, the voltage is nanometer. The amplifier technology is the key of logging technology of formation resistivity through casing. In this paper, which contains the design of signal conditioning circuits, the pre-amplifier utilizes the method of reducing power supply noise and select the low-noise amplifier. In order to achieve the performance and requirements of the circuit, the pre-amplifier make use of virtual GND and some of the denoising ways such as multi-level filtering respectively.
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关键词
virtual gnd,cased hole formation resistivity,low-noise amplifier,formation resistivity,preamplifier circuits,power supply noise,amplifier technology,denoising way,signal conditioning circuit,cutoff frequency,conductivity,transfer functions,low pass filters,noise,preamplifiers,low noise amplifier,electrical resistivity
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