Source code for kqcircuits.elements.waveguide_coplanar_taper

# This code is part of KQCircuits
# Copyright (C) 2021 IQM Finland Oy
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import math

from kqcircuits.elements.element import Element
from kqcircuits.pya_resolver import pya
from kqcircuits.util.parameters import Param, pdt, add_parameters_from
from kqcircuits.elements.finger_capacitor_square import FingerCapacitorSquare
from kqcircuits.elements.waveguide_coplanar_straight import WaveguideCoplanarStraight


[docs] @add_parameters_from(WaveguideCoplanarStraight, "add_metal") @add_parameters_from(FingerCapacitorSquare, a2=Element.a * 2, b2=Element.b * 2) class WaveguideCoplanarTaper(Element): """The PCell declaration of a taper segment of a coplanar waveguide. .. MARKERS_FOR_PNG 0,0,31.2,0,taper_length 0,5,0,-5,a 31.2,-10,31.2,10,a2 """ taper_length = Param(pdt.TypeDouble, "Taper length", 10 * math.pi, unit="μm") m2 = Param(pdt.TypeDouble, "Margin of right waveguide protection layer", 5 * 2, unit="μm")
[docs] def build(self): # # gap 1 pts = [ pya.DPoint(0, self.a / 2 + 0), pya.DPoint(self.taper_length, self.a2 / 2 + 0), pya.DPoint(self.taper_length, self.a2 / 2 + self.b2), pya.DPoint(0, self.a / 2 + self.b), ] shape = pya.DPolygon(pts) self.cell.shapes(self.get_layer("base_metal_gap_wo_grid")).insert(shape) # gap 2 pts = [ pya.DPoint(0, -self.a / 2 + 0), pya.DPoint(self.taper_length, -self.a2 / 2 + 0), pya.DPoint(self.taper_length, -self.a2 / 2 - self.b2), pya.DPoint(0, -self.a / 2 - self.b), ] shape = pya.DPolygon(pts) self.cell.shapes(self.get_layer("base_metal_gap_wo_grid")).insert(shape) # Protection layer pts = [ pya.DPoint(0, -self.a / 2 - self.b - self.margin), pya.DPoint(self.taper_length, -self.a2 / 2 - self.b2 - self.m2), pya.DPoint(self.taper_length, self.a2 / 2 + self.b2 + self.m2), pya.DPoint(0, self.a / 2 + self.b + self.margin), ] self.add_protection(pya.DPolygon(pts)) # Waveguide layer pts = [ pya.DPoint(0, self.a / 2), pya.DPoint(self.taper_length, self.a2 / 2), pya.DPoint(self.taper_length, -self.a2 / 2), pya.DPoint(0, -self.a / 2), ] shape = pya.DPolygon(pts) self.cell.shapes(self.get_layer("waveguide_path")).insert(shape) if self.add_metal: self.cell.shapes(self.get_layer("base_metal_addition")).insert(shape) pts = [ pya.DPoint(0, 0), pya.DPoint(self.taper_length, 0), ] shape = pya.DPath(pts, min(self.a, self.a2)) self.cell.shapes(self.get_layer("waveguide_path")).insert(shape) if self.add_metal: self.cell.shapes(self.get_layer("base_metal_addition")).insert(shape) # refpoints for connecting to waveguides self.add_port("a", pya.DPoint(0, 0), pya.DVector(-1, 0)) self.add_port("b", pya.DPoint(self.taper_length, 0), pya.DVector(1, 0))