# This code is part of KQCircuits
# Copyright (C) 2021 IQM Finland Oy
#
# This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public
# License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later
# version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along with this program. If not, see
# https://www.gnu.org/licenses/gpl-3.0.html.
#
# The software distribution should follow IQM trademark policy for open-source software
# (meetiqm.com/iqm-open-source-trademark-policy). IQM welcomes contributions to the code.
# Please see our contribution agreements for individuals (meetiqm.com/iqm-individual-contributor-license-agreement)
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import logging
from kqcircuits.pya_resolver import pya
from kqcircuits.util.parameters import Param, pdt
from kqcircuits.chips.chip import Chip
from kqcircuits.elements.waveguide_composite import WaveguideComposite, Node
[docs]
class SampleHolderTest(Chip):
"""
The PCell declaration for a SampleHolderTest chip.
SampleHolderTest has parametrized launcher configuration (launcher dimensions and number of launchers).
The launchers are connected pairwise by coplanar waveguides.
"""
n_launchers = Param(pdt.TypeInt, "Number of launchers", 40, unit="")
launcher_pitch = Param(pdt.TypeDouble, "Launcher pitch", 635, unit="μm")
launcher_width = Param(pdt.TypeDouble, "Launcher width", 160, unit="μm")
launcher_gap = Param(pdt.TypeDouble, "Launcher gap", 96, unit="μm")
launcher_indent = Param(pdt.TypeDouble, "Launcher indent from edge", 520, unit="μm")
[docs]
def build(self):
nr_pads_per_side = int(self.n_launchers / 4.0)
# North edge
launcher_assigments = {i: f"PL-{i}-IN" for i in range(1, nr_pads_per_side + 1)}
# East edge
launcher_assigments.update(
{pin: f"PL-{pl+1}-OUT" for pl, pin in enumerate(range(2 * nr_pads_per_side, nr_pads_per_side, -1))}
)
# South edge
launcher_assigments.update(
{
pin: f"PL-{pl + nr_pads_per_side + 1}-OUT"
for pl, pin in enumerate(range(2 * nr_pads_per_side + 1, 3 * nr_pads_per_side + 1))
}
)
# West edge
launcher_assigments.update(
{
pin: f"PL-{pl + nr_pads_per_side + 1}-IN"
for pl, pin in enumerate(range(4 * nr_pads_per_side, 3 * nr_pads_per_side, -1))
}
)
self.produce_n_launchers(
self.n_launchers,
"RF",
self.launcher_width,
self.launcher_gap,
self.launcher_indent,
self.launcher_pitch,
launcher_assignments=launcher_assigments,
)
def _produce_waveguide(i, straight_distance, first_port, second_port):
cell = self.add_element(
WaveguideComposite,
nodes=[
Node(self.refpoints[f"PL-{i}-{first_port}_port"]),
Node(self.refpoints[f"PL-{i}-{first_port}_port_corner"] + pya.DVector(0, straight_distance)),
Node(self.refpoints[f"PL-{i}-{second_port}_port_corner"] + pya.DVector(straight_distance, 0)),
Node(self.refpoints[f"PL-{i}-{second_port}_port"]),
],
)
self.insert_cell(cell)
logging.info(f"{self.name_chip}: Waveguide PL-{i} length: {cell.length()}")
for i in range(1, nr_pads_per_side + 1):
_produce_waveguide(i, -1200, first_port="IN", second_port="OUT")
for i in range(nr_pads_per_side + 1, nr_pads_per_side * 2 + 1):
_produce_waveguide(i, 1200, first_port="OUT", second_port="IN")