Created
October 13, 2019 21:06
-
-
Save mbrucher/33b3561338231a7b9694f2eed1b7bb0e to your computer and use it in GitHub Desktop.
Comparison of a resistor + coil vs a perfect gyrator
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
import numpy as np | |
from scipy.signal import freqs | |
import matplotlib.pyplot as plt | |
c = 47.0e-9 | |
r1 = 2.2e3 | |
r2 = 100.0e3 | |
a1 = [1.] | |
b1 = r1 * np.array((1., r2*c))[::-1] | |
a2 = np.array((1., r1*c))[::-1] | |
b2 = r1 * np.array((1., r2*c))[::-1] | |
w1, h1 = freqs(b1, a1, worN=np.logspace(1, 4.2, 10000)) | |
w2, h2 = freqs(b2, a2, worN=np.logspace(1, 4.2, 10000)) | |
plt.semilogx(w1, 20 * np.log10(abs(h1)), label="coil") | |
plt.semilogx(w2, 20 * np.log10(abs(h2)), label="gyrator") | |
plt.xlabel('Frequency') | |
plt.ylabel('Amplitude response [dB]') | |
plt.legend() | |
plt.grid() | |
plt.figure() | |
plt.semilogx(w1, np.angle(h1), label="coil") | |
plt.semilogx(w2, np.angle(h2), label="gyrator") | |
plt.xlabel('Frequency') | |
plt.ylabel('Angle') | |
plt.legend() | |
plt.show() |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment