Source code for kqcircuits.junctions.sim

# This code is part of KQCircuits
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from kqcircuits.pya_resolver import pya
from kqcircuits.util.parameters import Param, pdt
from kqcircuits.junctions.junction import Junction
from kqcircuits.util.symmetric_polygons import polygon_with_vsym


[docs]class Sim(Junction): """The PCell declaration for a simulation type SQUID. Origin at the center of junction layer bottom edge. """ junction_total_length = Param(pdt.TypeDouble, "Simulation junction total length", 33, unit="µm")
[docs] def build(self): trans = pya.DTrans(0.0, 0.0) self._produce_ground_metal_shapes(trans) # refpoints self.refpoints["origin_squid"] = pya.DPoint(0, 0) self.refpoints["port_squid_a"] = pya.DPoint(0, self.junction_total_length - 13) self.refpoints["port_squid_b"] = pya.DPoint(0, 12) self.refpoints["port_common"] = pya.DPoint(0, self.junction_total_length)
def _produce_ground_metal_shapes(self, trans): """Produces hardcoded shapes in metal gap and metal addition layers.""" # metal additions bottom bottom_pts = [pya.DPoint(-4, 0), pya.DPoint(-4, 12), pya.DPoint(4, 12), pya.DPoint(4, 0)] shape = polygon_with_vsym(bottom_pts) self.cell.shapes(self.get_layer("base_metal_addition")).insert(trans * shape) # metal additions top top_pts = [ pya.DPoint(-4, self.junction_total_length - 13), pya.DPoint(-4, self.junction_total_length), pya.DPoint(4, self.junction_total_length), pya.DPoint(4, self.junction_total_length - 13), ] shape = polygon_with_vsym(top_pts) self.cell.shapes(self.get_layer("base_metal_addition")).insert(trans * shape) # add ground grid avoidance w = self.cell.dbbox().width() h = self.cell.dbbox().height() protection = pya.DBox(-w / 2 - self.margin, -self.margin, w / 2 + self.margin, h + self.margin) self.add_protection(trans * protection)