Lecture 보드선도 _ 지연요소

$$G(s) = e^{-sT}$$

$$G(j \omega) = e^{-j \omega T}$$

$$\vert G(j \omega) \vert _{dB}= 20 \log _{10} \vert \cos (\omega T) -j \sin (\omega T) \vert \\ = 20 \log _{10} \sqrt{(\cos (\omega T))^2 +(\sin (\omega T))^2} = 0$$

$$\angle (e ^ {-j \omega T}) = \tan ^{-1} (\frac{-\sin \omega T}{\cos \omega T}) = -\omega T$$