# -*- coding: utf-8 -*-
# This code is part of Qiskit.
#
# (C) Copyright IBM 2017, 2021.
#
# This code is licensed under the Apache License, Version 2.0. You may
# obtain a copy of this license in the LICENSE.txt file in the root directory
# of this source tree or at http://www.apache.org/licenses/LICENSE-2.0.
#
# Any modifications or derivative works of this code must retain this
# copyright notice, and modified files need to carry a notice indicating
# that they have been altered from the originals.
""""""
from qiskit_metal import draw, Dict
from qiskit_metal.qlibrary.core import QComponent
import numpy as np
[docs]
class LineTee(QComponent):
"""Generates a three pin (+) structure comprised of a primary two pin CPW
transmission line, and a secondary one pin neighboring CPW transmission
line that is capacitively coupled to the primary. Such a structure can be
used, as an example, for generating CPW resonator hangars off of a
transmission line. (0,0) represents the center position of the component.
Inherits QComponent class.
::
(0,0)
+--------------------------+
|
|
|
|
|
+
.. image::
LineTee.png
.. meta::
Line Tee
Options:
* prime_width: '10um' -- The width of the trace of the two pin CPW transmission line
* prime_gap: '6um' -- The dielectric gap of the two pin CPW transmission line
* second_width: '10um' -- The width of the trace of the one pin CPW transmission line
* second_gap: '6um' -- The dielectric gap of the one pin CPW transmission line (also for the capacitor)
* t_length: '50um' -- The length for the t branches
"""
component_metadata = Dict(short_name='cpw', _qgeometry_table_path='True')
"""Component metadata"""
#Currently setting the primary CPW length based on the coupling_length
#May want it to be it's own value that the user can control?
default_options = Dict(prime_width='10um',
prime_gap='6um',
second_width='10um',
second_gap='6um',
t_length='50um')
"""Default connector options"""
TOOLTIP = """Generates a three pin (+) structure comprised of a primary two pin CPW
transmission line, and a secondary one pin neighboring CPW transmission
line that is capacitively coupled to the primary."""
[docs]
def make(self):
"""Build the component."""
p = self.p
prime_cpw_length = p.t_length * 2
#Primary CPW
prime_cpw = draw.LineString([[-prime_cpw_length / 2, 0],
[prime_cpw_length / 2, 0]])
#Secondary CPW
second_cpw = draw.LineString([[0, -p.prime_width / 2], [0,
-p.t_length]])
#Rotate and Translate
c_items = [prime_cpw, second_cpw]
c_items = draw.rotate(c_items, p.orientation, origin=(0, 0))
c_items = draw.translate(c_items, p.pos_x, p.pos_y)
[prime_cpw, second_cpw] = c_items
#Add to qgeometry tables
self.add_qgeometry('path', {'prime_cpw': prime_cpw},
width=p.prime_width,
layer=p.layer)
self.add_qgeometry('path', {'prime_cpw_sub': prime_cpw},
width=p.prime_width + 2 * p.prime_gap,
subtract=True,
layer=p.layer)
self.add_qgeometry('path', {'second_cpw': second_cpw},
width=p.second_width,
layer=p.layer)
self.add_qgeometry('path', {'second_cpw_sub': second_cpw},
width=p.second_width + 2 * p.second_gap,
subtract=True,
layer=p.layer)
#Add pins
prime_pin_list = prime_cpw.coords
second_pin_list = second_cpw.coords
self.add_pin('prime_start',
points=np.array(prime_pin_list[::-1]),
width=p.prime_width,
input_as_norm=True)
self.add_pin('prime_end',
points=np.array(prime_pin_list),
width=p.prime_width,
input_as_norm=True)
self.add_pin('second_end',
points=np.array(second_pin_list),
width=p.second_width,
input_as_norm=True)