def __init__(self, epsilon_r = 11.68, tan_delta = 7e-4, kappa = 3.53e50,
w = 19e-6, s = 11.5e-6, t = 100e-9, w_g = 200e-6,
rho_n=3e-8, rrr = 2.4, delta=180e-6):
'''
Attributes
----------
epsilon_r : float
Relative permitivity of the substrat infarad per meter.
tan_delta : float
Loss tangent without dimension.
kappa : float
Conductivity of the metal layer insiemens per meter.
w : float
Width of the central line in meter.
s : float
Width of the gap separation in meter.
t : float
Thickness of the metal layer in meter.
w_g : float
Width of the ground plane in meter.
rho_n : float
Resistivity of the metal layer in ohm.m.
rrr : float
Residual-resistance ratio of the metallic layer.
delta : float
Superconductor gap in eV.
'''
self.rho_n = rho_n
self.rrr = rrr
self.delta = delta
CPW.__init__(self, epsilon_r=epsilon_r, tan_delta=tan_delta,kappa=kappa,
w=w, s=s, t=t, w_g=w_g)
def __init__(self, epsilon_r=11.68, tan_delta=7e-4, kappa=3.53e50,
w=19e-6, s=11.5e-6, t=100e-9, w_g=200e-6, l=5e-3):
'''
Attributes
----------
epsilon_r : float
Relative permitivity of the substrat infarad per meter.
tan_delta : float
Loss tangent without dimension.
kappa : float
Conductivity of the metal layer insiemens per meter.
w : float
Width of the central line in meter.
s : float
Width of the gap separation in meter.
t : float
Thickness of the metal layer in meter.
w_g : float
Width of the ground plane in meter.
l : float
Length of the quarter wave resonator in meter.
'''
self.l = l
CPW.__init__(self, epsilon_r=epsilon_r, tan_delta=tan_delta,
kappa=kappa, w=w, s=s, t=t, w_g=w_g,)
def get_inductance_per_unit_length(self, f, separate=False):
'''
Return the length inductance of the transmision line by taking into
account the superconductivity of the metal layer.
Parameters
----------
f : float, numpy.ndarray
Frequency in Hz
separate : Booleen
If True return a tupple of inductance as (geometric, kinetic).
Return
----------
Ll : float, numpy.ndarray
Inductance per unit length in H/m.
'''
Ll = CPW.get_inductance_per_unit_length(self, f)
a = -self._t/np.pi +np.sqrt((2.*self._t/np.pi)**2. + self._w**2.)/2.
b = self._w**2./4./a
c = b - self._t/np.pi + np.sqrt((self._t/np.pi)**2. + self._s**2./2.)
d = 2.*self._t/np.pi + c
Lk = cst.mu_0*self.get_penetration_length()*c/4./a/d/self._ellipk(self._k0())*(\
1.7/np.sinh(self._t/2./self.get_penetration_length())\
+ 0.4/np.sqrt(((b/a)**2. - 1.)*(1. - (b/d)**2.)))
if separate:
return Ll, Lk
else:
return Ll + Lk
def __init__(self,
epsilon_r=11.68,
tan_delta=7e-4,
kappa=3.53e50,
w=19e-6,
s=11.5e-6,
t=100e-9,
w_g=200e-6,
l=5e-3):
'''
Attributes
----------
epsilon_r : float
Relative permitivity of the substrat infarad per meter.
tan_delta : float
Loss tangent without dimension.
kappa : float
Conductivity of the metal layer insiemens per meter.
w : float
Width of the central line in meter.
s : float
Width of the gap separation in meter.
t : float
Thickness of the metal layer in meter.
w_g : float
Width of the ground plane in meter.
l : float
Length of the quarter wave resonator in meter.
'''
self.l = l
CPW.__init__(
self,
epsilon_r=epsilon_r,
tan_delta=tan_delta,
kappa=kappa,
w=w,
s=s,
t=t,
w_g=w_g,
)
