RapidPassives is a tool for generating GDS files for RFIC inductors and transformers with arbitrary numbers of windings and winding ratios. In addition to the geometry generators, checker methods are implemented that ensure a valid geometry without clipping or overlap. See the example.py file for example usage.
For convenience, a simple GUI with geometry preview and GDS export functionality is implemented using tkinter.
from rapidpassives import SpiralInductor
#instantiate the inductor for some geometry parameters
Ind = SpiralInductor(
Dout=122, # outer diameter
N=3, # number of windings
sides=8, # number of winding sides (8 -> octagonal)
width=10, # conductor width
spacing=4, # conductor spacing
via_spacing=0.8, # spacing between vias in via array
via_width=1, # width of vias in via array
via_in_metal=0.45) # distance of vias to metal edge
#plot the geometry
Ind.plot()
#export as gds file
Ind.to_gds("examples/spiralinductor.gds")from rapidpassives import SymmetricInductor
#instantiate the inductor for some geometry parameters
Ind = SymmetricInductor(
Dout=250, # outer diameter
N=3, # number of windings
sides=8, # number of winding sides (8 -> octagonal)
width=16, # conductor width
spacing=2, # conductor spacing
center_tap=False, # include center tap
via_extent=8, # size of the via arrays for crossings
via_spacing=0.8, # spacing between vias in via array
via_width=1, # width of vias
via_in_metal=0.45) # distance of vias to metal edge
#plot the geometry
Ind.plot()
#export as gds file
Ind.to_gds("examples/symmetricinductor.gds")from rapidpassives import SymmetricTransformer
#instantiate the transformer for some geometry parameters
Trf = SymmetricTransformer(
Dout=200, # outer diameter
N1=2, # number of primary side windings
N2=3, # number of secondary side windings
sides=8, # numer of winding sides (8 -> octagonal)
width=12, # conductor width
spacing=2, # conductor spacing
center_tap_primary=True, # include primary side center tap
center_tap_secondary=False, # include secondary side center tap
via_extent=8, # size of the via arrays for crossings
via_spacing=0.8, # spacing between vias in via array
via_width=1, # width of vias
via_in_metal=0.45) # distance of vias to metal edge
#plot the geometry
Trf.plot()
#export as gds file
Trf.to_gds("examples/symmetrictransformer.gds")The GUI is implemented as a wrapper for the library in gui.py and can be built locally as an executable with pyinstaller by executing the build_exe.bat file in the package directory.