Characterizing my first attempt at copper-only passives

import math import numpy as np def plot_re_mag(ax, dut_plot): color = next(ax._get_lines.prop_cycler)['color'] ax.plot(dut_plot.f, np.where(dut_plot.z_re[:, 0, 0] < 0, np.nan, abs(dut_plot.z_re[:,0,0])), color=color, label=dut_plot.name) ax.plot(dut_plot.f, np.where(dut_plot.z_re[:, 0, 0] > 0, np.nan, abs(dut_plot.z_re[:,0,0])), ':', color=color) ax.set_ylim(0.01,100) ax.set_yscale("log") ax.set_title("Magnitude of real component of impedance") ax.yaxis.set_major_formatter(lambda y,pos: f"{10 * math.log10(y):.0f} dB ohm") ax.legend(loc="upper right", fontsize=6) ax.xaxis.set_major_formatter(lambda y,pos: f"{y/1e9:.1f}\nGHz") def plot_im_mag(ax, dut_plot): color = next(ax._get_lines.prop_cycler)['color'] ax.plot(dut_plot.f, np.where(dut_plot.z_im[:, 0, 0] < 0, np.nan, abs(dut_plot.z_re[:,0,0])), color=color, label=dut_plot.name) ax.plot(dut_plot.f, np.where(dut_plot.z_im[:, 0, 0] > 0, np.nan, abs(dut_plot.z_re[:,0,0])), ':', color=color) ax.set_ylim(0.1,10000) ax.set_yscale("log") ax.set_title("Magnitude of imag component of impedance") ax.yaxis.set_major_formatter(lambda y,pos: f"{10 * math.log10(y):.0f} dB ohm") ax.legend(loc="upper right", fontsize=6) ax.xaxis.set_major_formatter(lambda y,pos: f"{y/1e9:.1f}\nGHz") fig,(ax0, ax1) = plt.subplots(2,1, sharex = True, figsize=(7,6)) plot_re_mag(ax0, dut_boardstd) plot_im_mag(ax1, dut_boardstd)