Double T notch filter S-domain calculation and analysis 2 (pure hand-drawn amplitude-frequency characteristic curve)

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Double T notch filter S-domain calculation and analysis 2 (pure hand-drawn amplitude-frequency characteristic curve) [Copy link]

62, 62, 62)]Author: eeworld netizen zjd01--Zhang Jindong

Original link:S-domain calculation and analysis of double-T notch filter 2 (pure hand-drawn amplitude-frequency characteristic curve)

Previously, we calculated the s-domain system function of the double-T notch filter and plotted the zero-pole distribution in the s-domain according to the function. However, it is difficult for us to form an intuitive impression of the system based on the zero-pole distribution alone.

Here, for easier understanding, we will draw the amplitude-frequency characteristic curve of the system according to the zero-pole distribution diagram by hand calculation or measurement.

This calculation is not very complicated, but it is recommended that students deduce the whole process by themselves and calculate it by hand. This will trigger thinking about its principles and connections and increase understanding of its essence. There is a huge difference between watching others walk and walking by yourself.

I recommend that hardware engineers or students often do some s-domain system function analysis and draw corresponding curves for some simple analog circuits, which can help them understand the system very deeply.

Below I share with you the process of drawing the amplitude-frequency characteristic curve that I completed last night. If you have any questions, please feel free to correct me. Thank you very much (37564275@qq.com).

If you think it is valuable, please share it with your hardware engineer friends or classmates who need it.

This content is originally created by EEWORLD forum user zjd01. If you need to reprint or use it for commercial purposes, you must obtain the author's consent and indicate the source

gmchen

S-domain analysis is a skill that every electronic engineer must master. Although most of the modern analysis has been handed over to computers, most of the principles of S-domain analysis contained in the original author's analysis must be mastered. The consequence of blindly relying on simulation software may be a loss of direction in design analysis.

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