Sharing a Module Across Models

A model normally owns its modules and their parameters. To share one module across several models, store it on an pmrf.models.AbstractBuilder and pass it to each model in build. This board shares one substrate between two traces.

import pmrf as prf
from pmrf.materials import ConstantDielectric, Substrate
from pmrf.models import AbstractBuilder, MicrostripLine

class Board(AbstractBuilder):
    substrate: Substrate
    w1: prf.Param
    w2: prf.Param

    def build(self):
        return (
            MicrostripLine(w=self.w1, substrate=self.substrate, length=0.1)
            ** MicrostripLine(w=self.w2, substrate=self.substrate, length=0.2)
        )

board = Board(
    substrate=Substrate(h=1.6e-3, dielectric=ConstantDielectric(ep_r=4.3, tand=0.02)),
    w1=1.0e-3,
    w2=2.0e-3,
)
list(prf.params(board))

['substrate.h',
 'substrate.dielectric.ep_r',
 'substrate.dielectric.tand',
 'substrate.dielectric.sigma',
 'substrate.dielectric.mu_r',
 'substrate.conductor.sigma',
 'substrate.conductor.mu_r']