siriusfox/ps_plotter
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Mark stable point of tank plotting with hard gain limit

Browse source
This commit is contained in:
Luke 2018-07-19 10:20:10 -07:00
parent 17d08cfaed
commit d6d75b804f
3 changed files with 179 additions and 14 deletions
Download patch file Download diff file Expand all files Collapse all files

26
tankPlot.py
View file

@ -32,7 +32,7 @@ def atan(x):
################################################################################
# Override the defaults for this script
rcParams['figure.figsize'] = [10,7]
default_window_position='+20+80'
default_window_position=['+20+80', '+120+80']
################################################################################
# Operating Enviornment (i.e. circuit parameters)
@ -50,6 +50,15 @@ g1_limit = np.sqrt( g1*g1 - (gamma*gamma) * c1/l1 )
K_limit = np.sqrt(c1/l1)*1/g1_limit
phase_limit = np.mod(np.pi/2 - np.arctan( -1/K_limit * 1/gamma ),np.pi) - np.pi
if abs(phase_limit) < phase_limit_requested:
print("==> WARN: Phase Beyond bounds, leaving at limits. <==")
print("==> %.3f requested, but hardware limit is %.3f <==" % \
(180/np.pi*phase_limit_requested, 180/np.pi*abs(phase_limit)))
sys.exit(-1)
else:
phase_limit = phase_limit_requested
# This gives us our equal phase spacing points
phase_swp = np.linspace(-1,1,gamma_sweep_steps) * phase_limit
# Then use this to compute the gamma steps to produce arbitrary phase given
@ -85,9 +94,14 @@ for itune,gamma_tune in enumerate(gamma_swp):
tf[itune,:] = tf_tmp
tf = tf.T
tf_d = tf[:,1:]-tf[:,:-1]
tf_r = tf / (tf[:,int(tf.shape[1]/2)]*np.ones((tf.shape[1],1))).T
# double to describe with perfect inversion stage
tf = np.column_stack((tf,-tf))
ref_index = int(gamma_swp.shape[0]/2)
tf_r = tf / (tf[:,ref_index]*np.ones((tf.shape[1],1))).T
y_tank = y_tank.T
print(ang(tf[f==28,:]))
################################################################################
h1 = pp.figure()
@ -102,7 +116,7 @@ ax4 = h1.add_subplot(2,2,4)
ax1.plot(y_tank, datatype=SmithAxes.Y_PARAMETER, marker="None")
ax2.plot(np.angle(tf), dB20(tf))
ax3.plot(f,dB20(tf))
ax4.plot(f,ang(tf))
ax4.plot(f,ang_unwrap(tf))
################################################################################
ax8 = h2.add_subplot(2,1,1)
@ -130,7 +144,7 @@ for ax_T in [ax3, ax4, ax8, ax9]:
################################################################################
h1.tight_layout()
h2.tight_layout()
mgr.window.geometry(default_window_position)
mgr.window.geometry(default_window_position[0])
h1.show()
mgr.window.geometry(default_window_position)
mgr.window.geometry(default_window_position[1])
h2.show()