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""" | |
calcpml3d(NGRID, NPML) -> (sx, sy, sz) | |
Calculate PML Parameters | |
# Input Arguments | |
- `NGRID`: Iterable containing `(Nx, Ny, Nz)`, number of cells on grid | |
- `NPML`: Iterable containing (NXLO, NXHI, NYLO, NYHI, NZLO, NZHI), the size of PML |
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using PSSFSS | |
# From M.-A. Joyal and J.-J. Laurin, "Analysis and Design of Thin Circular Polarizers Based on | |
# Meander Lines", IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 60, NO. 6, JUNE 2012, | |
# pp. 3007-3011, Fig. 7 (hybrid design) | |
meand = meander(ntri=600, units=mil, a=160, b=201, h=100, w1=23, w2=23, rot=45) | |
rect = rectstrip(Nx=5, Ny=20, units=mil, Px=160, Py=201, Lx=31, Ly=139, rot=45) | |
pyralux = Layer(ϵᵣ=3.4, tanδ=0.002, width=5mil) | |
spacer = Layer(ϵᵣ=1.1, tanδ=0.01, width=74mil) # λ/8 in Rohacell 71 HF at 19 GHz |