def smp_connector(em,
x,
y,
z,
zmax,
coax_port_length=0.2e-3,
pin_diameter=0.85e-3):
copper_shield = openems.Metal(em, 'smp_shield')
copper = openems.Metal(em, 'smp_pin')
lcp = openems.Dielectric(em, 'lcp', eps_r=3.2)
# shield
outside = np.array([[-2.5, 1.0], [-2.5, 2.5], [2.5, 2.5], [2.5, -2.5],
[-2.5, -2.5], [-2.5, -1.0]]) * 1e-3
angle = np.arcsin(1.0 / 2.25)
inside = openems.arc(0, 0, 4.5e-3 / 2.0, -np.pi + angle, np.pi - angle)
openems.Polygon(copper_shield,
priority=9,
pcb_layer=None,
points=[x, y] + np.concatenate((inside, outside)),
elevation=[z, z + 0.9e-3],
normal_direction='z')
outside = np.array([[0, 2.5], [2.5, 2.5], [2.5, -2.5], [0, -2.5]]) * 1e-3
inside = openems.arc(0, 0, 1.95e-3 / 2.0, -np.pi * 0.5, np.pi * 0.5)
openems.Polygon(copper_shield,
priority=9,
pcb_layer=None,
points=[x, y] + np.concatenate((inside, outside)),
elevation=[z + 0.9e-3, zmax],
normal_direction='z').duplicate().mirror('x')
# pin
start = np.array([x, y, zmax - coax_port_length])
stop = np.array([x, y, z + 0.9e-3])
copper.AddCylinder(start, stop, 0.5 * pin_diameter, priority=9)
# smaller part of pin
stop[2] = z
copper.AddCylinder(start, stop, 0.5 * 0.8e-3, priority=9)
# insulator
start = np.array([x, y, z])
stop = np.array([x, y, z + 0.9e-3])
lcp.AddCylinder(start, stop, 4.5e-3 * 0.5, priority=1)
if coax_port_length != 0:
# port (coax)
start = [
x + 0.5 * coax_port_length, y + 0.5 * coax_port_length,
zmax - coax_port_length
]
stop = [x - 0.5 * coax_port_length, y - 0.5 * coax_port_length, zmax]
openems.Port(em, start, stop, direction='z', z=50)
em.mesh.AddLine('z', start[2])
def generate(
em,
sub,
z, # [bottom of substrate, top of substrate, top of metal]
port_length,
ms_width,
section, # pairs of x and y size of a segment
box_width):
box_length = 2.0*(port_length) + np.sum(section[:,0])
pec = openems.Metal(em, 'pec')
# substrate
start = np.array([ 0.5*box_length, 0.5*box_width, z[0]])
stop = np.array([-0.5*box_length, -0.5*box_width, z[1]])
openems.Box(sub, 1, start, stop)
# pads
x0 = -0.5*box_length
x1 = x0 + port_length
x2 = x1 + ms_width
start = np.array([x1, 0.5*ms_width, z[1]])
stop = np.array([x2, -0.5*ms_width, z[2]])
l1 = openems.Box(pec, 9, start, stop, padname = '1')
l2 = l1.duplicate("line_p2").mirror('x')
l2.padname = '2'
x = x1
points = np.zeros((2*len(section),2))
i = 0
for s in section:
points[i,0] = x
x += s[0]
points[i+1,0] = x
points[i,1] = 0.5*s[1]
points[i+1,1] = 0.5*s[1]
i += 2
print(points)
points = np.concatenate((points, points[::-1]*[1,-1.0]))
print(points)
pec.AddPolygon(
points = points,
priority = 9,
elevation = z[1:],
normal_direction = 'z',
pcb_layer = 'F.Cu',
pcb_width = 1e-5)
# main line ports
start = [x0, -0.5*ms_width, z[1]]
stop = [x1, 0.5*ms_width, z[2]]
em.AddPort(start, stop, direction='x', z=50).duplicate().mirror('x')
#!/usr/bin/env python3
import sys
import openems
import numpy as np
mm = 1e-3 # default unit is the meter
em = openems.OpenEMS(sys.argv[1], EndCriteria = 1e-6, fmin = 0e6, fmax = 60e9)
em.fsteps = 801
copper = openems.Metal(em, 'copper')
sub = openems.Dielectric(em, 'substrate', eps_r=3.2)
mask = openems.Dielectric(em, 'mask', eps_r=3.3)
air = openems.Dielectric(em, 'air', eps_r=1.0006)
foil_thickness = 0.035*mm
port_length = 0.05*mm
box_length = 5*mm
box_width = 1.5*mm
ms_width = 0.190*mm
box_top = 1.5*mm
# dimensions Z
substrate_top = 0.102*mm
foil_top = substrate_top + foil_thickness
em.resolution = 50e-6
em.mesh.AddLine('z', foil_top + box_top)
em.mesh.AddLine('z', -0.5*mm)
# substrate
start = np.array([-0.5*box_length, 0.5*box_width, 0])
stop = np.array([0.5*box_length, -0.5*box_width, substrate_top])
def generate(
em,
substrate,
z, # [bottom of substrate, top of substrate, top of metal]
y1=5.5 * mm,
y2=0.9 * mm,
r=0.5 * mm,
rv=[200, 200, 200, 200],
w=[0.127 * mm, 0.152 * mm, 0.19 * mm, 0.23 * mm],
port_length=0.2 * mm,
ms_width=0.36 * mm,
endspace=0.5 * mm,
resistor_size='0402'):
alumina = openems.Dielectric(em, 'alumina', eps_r=9.8)
metal = openems.Metal(em, 'pec_wilkinson')
n = len(rv)
# substrate
start = np.array([(n * 4 - 1) * r + endspace, y1 + r + endspace, z[0]])
stop = np.array([-1.0 * endspace, -1.0 * start[1], z[1]])
substrate.AddBox(start, stop, 1)
# common port line (pad 1)
start = np.array([-1.0 * endspace + port_length, 0.5 * ms_width, z[1]])
stop = np.array([0, -0.5 * ms_width, z[2]])
metal.AddBox(start, stop, priority=9, padname='1')
lo = arc(r, -y1, r + 0.5 * w[0], pi, 2 * pi, 16)
li = arc(r, -y1, r - 0.5 * w[0], pi, 2 * pi, 16)
lo = cat((lo, arc(3 * r, -y2, r - 0.5 * w[0], pi, 0.55 * pi, 16)))
li = cat((li, arc(3 * r, -y2, r + 0.5 * w[0], pi, 0.55 * pi, 16)))
for i in range(n - 1):
x = (4 * i + 3) * r
w2 = w[1 + i]
em.mesh.AddLine('x', x + r - 0.5 * w2)
em.mesh.AddLine('x', x + r + 0.5 * w2)
em.mesh.AddLine('x', x + 3 * r - 0.5 * w2)
em.mesh.AddLine('x', x + 3 * r + 0.5 * w2)
lo = cat((lo, arc(x, -y2, r - 0.5 * w2, 0.45 * pi, 0, 16)))
li = cat((li, arc(x, -y2, r + 0.5 * w2, 0.45 * pi, 0, 16)))
lo = cat((lo, arc(2 * r + x, -y1, r + 0.5 * w2, pi, 2 * pi, 16)))
li = cat((li, arc(2 * r + x, -y1, r - 0.5 * w2, pi, 2 * pi, 16)))
lo = cat((lo, arc(4 * r + x, -y2, r - 0.5 * w2, pi, 0.55 * pi, 16)))
li = cat((li, arc(4 * r + x, -y2, r + 0.5 * w2, pi, 0.55 * pi, 16)))
l = cat((lo, li[::-1]))
l = cat((l[::-1] * [1, -1], l))
openems.Polygon(metal,
priority=9,
points=l,
elevation=z[1:],
normal_direction='z',
pcb_layer='F.Cu',
pcb_width=0.001)
# x at 2 port side
x0 = (n * 4 - 1) * r + endspace
x1 = x0 - port_length
# output lines
for (ym, padname) in [(1, 2), (-1, 3)]:
start = np.array([x1, ym * 0.2 * mm, z[1]])
stop = np.array([(n * 4 - 1) * r - 0.1 * mm,
ym * (0.2 * mm + ms_width), z[2]])
lp2 = metal.AddBox(start, stop, priority=9, padname=padname)
# main line port
start = [-1.0 * endspace, -0.5 * ms_width, z[1]]
stop = [-1.0 * endspace + port_length, 0.5 * ms_width, z[2]]
openems.Port(em, start, stop, direction='x', z=50)
# coupled line ports
for ym in [-1, 1]:
start = [x0 - port_length, ym * 0.2 * mm, z[1]]
stop = [x0, ym * (0.2 * mm + ms_width), z[2]]
openems.Port(em, start, stop, direction='x', z=50)
for i in range(n):
if not rv[i]:
continue
em.add_resistor('r{}'.format(i),
origin=np.array([4 * r * i + 3 * r, 0, z[2]]),
direction='y',
value=rv[i],
invert=False,
priority=9,
dielectric=alumina,
metal=metal,
element_down=False,
size=resistor_size)
#!/usr/bin/env python3
# Common SMA edge launch to OSHPark 4 layer
import sys
from scipy.constants import mil
import openems
import numpy as np
em = openems.OpenEMS('sma_el',
EndCriteria=1e-6,
fmin=0,
fmax=20e9,
fsteps=1001)
em.resolution = 8e-5
copper = openems.Metal(em, 'copper')
copper_shield = openems.Metal(em, 'copper_shield')
sub = openems.Dielectric(em, 'ro4350b', eps_r=3.66, tand=0.0035, fc=em.fmax)
teflon = openems.Dielectric(em, 'teflon', eps_r=2.1, tand=0.0002, fc=em.fmax)
foil_thickness = 35e-6
substrate_thickness = 62 * mil - 7 * mil
port_length = 300e-6
box_length = 10e-3
box_width = 6e-3
box_height = 6e-3
ms_width = 1.0e-3
board_gap = 0.0
# coax
coax_scale = 2.0
pin_diameter = 0.5e-3 * coax_scale
dielectric_diameter = 1.67e-3 * coax_scale
#!/usr/bin/env python3
import sys
from scipy.constants import pi, c, epsilon_0, mu_0, mil, inch
mm = 0.001
import openems
import openems.miter
import numpy as np
em = openems.OpenEMS('miter_6.6')
em.end_criteria = 1e-6
em.fmin = 0
em.fmax = 40e9
em.fsteps = 1601
fc = 40e9
pec = openems.Metal(em, 'pec')
sub = openems.Dielectric(em, 'ro4350b', eps_r=3.66, tand=0.0035, fc=fc)
foil_thickness = 0.033*mm
substrate_thickness = 6.6*mil
ms_air_above = 1.0*mm
z = [0.0, substrate_thickness, substrate_thickness + foil_thickness]
em.mesh.AddLine('z', z[2] + ms_air_above)
em.resolution = 50e-6
openems.miter.generate(
em,
pec,
sub,
miter = 0.35 * mm,
z = z,
#!/usr/bin/env python
import sys
from scipy.constants import pi, c, epsilon_0, mu_0, mil, inch
mm = 0.001
import openems
import openems.idbpf
import numpy as np
em = openems.OpenEMS('idbpf_b3', fmin=1e6, fmax=16e9)
em.end_criteria = 1e-10
em.fsteps = 1601
fc = 7.12e9
eps_r = 3.66
#em.add_lossy_metal('copper', frequency=fc, conductivity=56e6/3, ur=1.0)
openems.Metal(em, 'copper')
openems.Metal(em, 'pec')
#em.via_offset_x = 5*mil
#em.via_offset_y = 5*mil
openems.Dielectric(em, 'sub', eps_r=eps_r).set_tanD(0.0035, freq=fc)
foil_thickness = 0.035 * mm
substrate_thickness = 22 * mil
ms_air_above = 2.0 * mm
via = 0.3 * mm
via_pad = 0.6 * mm
# dimensions Z
substrate_bottom = 0.0
substrate_top = substrate_bottom + substrate_thickness
foil_top = substrate_top + foil_thickness
def generate(self):
pec = openems.Metal(self.em, 'pec_filter')
ring_ix = 0.5 * (np.max(self.rl) + self.end_gap)
ring_ox = ring_ix + 2.0 * self.via_padradius
via_z = [[self.z[0], self.z[1] + self.lidz], [self.z[1], self.z[2]]]
# fingers
y = -0.5 * self.space[-1:][0]
mirror = False
mirrorstring = ['', 'x']
for i in range(len(self.space))[::-1]: # reverse order
x1 = 0.5 * (ring_ox + ring_ix)
x2 = ring_ix - self.rl[i]
y += self.space[i]
start = [x1, y, self.z[1]]
y += self.rw[i]
stop = [x2, y, self.z[2]]
box = openems.Box(pec,
9,
start,
stop,
padname='poly',
pcb_layer=self.pcb_layer)
box.mirror(mirrorstring[mirror])
mirror = not mirror
box2 = box.duplicate()
box2.mirror('xy')
v = openems.Via(pec,
priority=2,
x=ring_ix + self.via_padradius,
y=y - 0.5 * self.rw[i],
z=via_z,
drillradius=self.via_radius,
padradius=self.via_padradius,
padname='2')
if not mirror:
v.mirror('x')
v.duplicate().mirror('xy')
if self.endmetal:
v.duplicate().mirror('y')
v.duplicate().mirror('x')
mirror = not mirror
# ports
y1 = y
y -= 0.5 * self.rw[0] # center of line
y2 = y + 0.5 * self.feedwidth + self.ring_y_width # y outside
px = ring_ix - self.tapoffset
py = y2 - self.portlength
start = [px + 0.5 * self.feedwidth, y2, self.z[1]]
stop = [px - 0.5 * self.feedwidth, py, self.z[2]]
p = openems.Port(self.em, start, stop, direction='y', z=50)
p.mirror(mirrorstring[mirror])
p2 = p.duplicate().mirror('xy')
# feed lines
start = [px + 0.5 * self.feedwidth, py, self.z[1]]
stop = [px - 0.5 * self.feedwidth, y - 0.5 * self.rw[0], self.z[2]]
box = openems.Box(pec,
9,
start,
stop,
padname='1',
pcb_layer=self.pcb_layer)
box.mirror(mirrorstring[mirror])
box2 = box.duplicate()
box2.mirror('xy')
box2.padname = '3'
# substrate
start = np.array([ring_ox, y2, self.z[0]])
stop = openems.mirror(start, 'xy')
stop[2] = self.z[1] + self.lidz
sub = openems.Box(self.sub, 1, start, stop)
# mask
if self.mask_thickness > 0.0:
start = np.array([ring_ox, y2, self.z[1]])
stop = openems.mirror(start, 'xy')
stop[2] += self.mask_thickness
openems.Box(mask, 1, start, stop)
# grounded end metal
if self.endmetal:
em1 = openems.Box(
pec,
9,
start=[ring_ix, y2, self.z[1]],
stop=[ring_ix + 2.0 * self.via_padradius, -y2, self.z[2]],
padname='2',
pcb_layer=self.pcb_layer)
em1.duplicate().mirror('x')
def idbpf(
em, # openems instance
sub, # substrate, define with openems.Dielectric()
z=[], # z position, z[0] = sub bottom, z[1] = sub top, z[2] = foil top
lidz=0, # upper substrate thickness
rl=[], # length of resonator fingers
rw=[], # width of resonator fingers
space=[], # space between resonator fingers
endmetal=True, # add metal to filter ends
portlength=0.2 * mm, # length of the openems port
feedwidth=0.85 * mm, # width of the trace leaving the filter and port
end_gap=0.3 * mm, # space between the end of a resonator and ground
via_radius=0.15 * mm, # radius of the via drills
via_padradius=0.3 * mm, # radius of the via pads
pcb_layer='F.Cu', # Kicad layer
mask=None, # mask, define with openems.Dielectric()
mask_thickness=0, # set to non-zero to enable solder mask over filter
):
edge_space = 0.5 * mm
pec = openems.Metal(em, 'pec_filter')
ring_ix = 0.5 * (np.max(rl) + end_gap)
ring_ox = ring_ix + 2.0 * via_padradius
via_z = [[z[0], z[1] + lidz], [z[1], z[2]]]
# fingers
y = -0.5 * space[-1:][0]
mirror = False
mirrorstring = ['', 'x']
for i in range(len(space))[::-1]: # reverse order
x1 = 0.5 * (ring_ox + ring_ix)
x2 = ring_ix - rl[i]
y += space[i]
start = [x1, y, z[1]]
y += rw[i]
stop = [x2, y, z[2]]
box = openems.Box(pec,
9,
start,
stop,
padname='poly',
pcb_layer=pcb_layer)
box.mirror(mirrorstring[mirror])
mirror = not mirror
box2 = box.duplicate()
box2.mirror('xy')
if i == 0:
continue
v = openems.Via(pec,
priority=2,
x=ring_ix + via_padradius,
y=y - 0.5 * rw[i],
z=via_z,
drillradius=via_radius,
padradius=via_padradius,
padname='2')
if not mirror:
v.mirror('x')
v.duplicate().mirror('xy')
mirror = not mirror
# ports
y1 = y + feedwidth - rw[0] # outer edge of feed
y2 = y - rw[0] # inner edge
px = ring_ox
start = [px, y2, z[1]]
stop = [px - portlength, y1, z[2]]
p = openems.Port(em, start, stop, direction='x', z=50)
p.mirror(mirrorstring[mirror])
p2 = p.duplicate().mirror('xy')
# feed lines
start = [-ring_ix + rl[0], y1, z[1]]
stop = [px - portlength, y2, z[2]]
box = openems.Box(pec, 9, start, stop, padname='1', pcb_layer=pcb_layer)
box.mirror(mirrorstring[mirror])
box2 = box.duplicate()
box2.mirror('xy')
box2.padname = '3'
# substrate
start = np.array([ring_ox, y1 + edge_space, z[0]])
stop = openems.mirror(start, 'xy')
stop[2] = z[1] + lidz
sub = openems.Box(sub, 1, start, stop)
# mask
if mask_thickness > 0.0:
start = np.array([ring_ox, y2, z[1]])
stop = openems.mirror(start, 'xy')
stop[2] += mask_thickness
openems.Box(mask, 1, start, stop)
# grounded end metal
if endmetal:
em1 = openems.Box(
pec,
9,
start=[ring_ix, -y2 + space[0], z[1]],
stop=[ring_ix + 2.0 * via_padradius, y1 + edge_space, z[2]],
padname='2',
pcb_layer=pcb_layer)
em1.duplicate().mirror('xy')
def idbpf(em, # openems instance
sub, # substrate, define with openems.Dielectric()
lidz = 0.0,
z = [], # z position, z[0] = sub bottom, z[1] = sub top, z[2] = foil top
space = [], # space between resonator fingers
rl = [], # length of resonator fingers
rw = [], # width of resonator fingers
portlength = 0.2*mm, # length of the openems port
feedwidth = 0.85*mm, # width of the trace leaving the filter and port
tapoffset = 1.0*mm, # offset of tap from end of resonator
end_gap = 0.3*mm, # space between the end of a resonator and ground
via_radius = 0.15*mm, # radius of the via drills
via_padradius = 0.3*mm, # radius of the via pads
pcb_layer = 'F.Cu', # Kicad layer
mask_thickness = 0, # set to non-zero to enable solder mask over filter
mask = None, # mask, define with openems.Dielectric()
endmetal = True, # add metal to filter ends
):
pec = openems.Metal(em, 'pec_filter')
ring_y_width = via_padradius * 2.0
ring_ix = 0.5 * (np.max(rl) + end_gap)
ring_ox = ring_ix + 2.0 * via_padradius
via_z = [[z[0], z[1]+lidz], [z[1], z[2]]]
# fingers
y = -0.5*space[-1:][0]
mirror = np.array([1,1,1])
if len(space) % 2 == 0:
mirror[0] *= -1
for i in range(len(space))[::-1]: # reverse order
x1 = 0.5 * (ring_ox + ring_ix)
x2 = ring_ix - rl[i]
y += space[i]
start = [x1, y, z[1]];
y += rw[i]
stop = [x2, y, z[2]];
for m in [np.array([1,1,1]),np.array([-1,-1,1])]:
m *= mirror
openems.Box(pec, 9, start*m, stop*m, padname = 'poly', pcb_layer=pcb_layer)
openems.Via(pec, priority=2,
x=m[0]*(ring_ix+via_padradius),
y=m[1]*(y-0.5*rw[i]),
z=via_z,
drillradius=via_radius,
padradius=via_padradius, padname='2')
mirror[0] *= -1
if endmetal:
v.duplicate().mirror('y')
v.duplicate().mirror('x')
mirror *= [-1,1,1]
# ports
y1 = y
y -= 0.5*rw[0] # center of line
y2 = y + 0.5*feedwidth + ring_y_width # y outside
px = ring_ix - tapoffset
py = y2 - portlength
for m in [-1,1]:
start = [m*(px + 0.5*feedwidth), m*y2, z[1]]
stop = [m*(px - 0.5*feedwidth), m*py, z[2]]
openems.Port(em, start, stop, direction='y', z=50)
# feed lines
start = [m*(px + 0.5*feedwidth), m*py, z[1]]
stop = [m*(px - 0.5*feedwidth), m*(y-0.5*rw[0]), z[2]]
openems.Box(pec, 9, start, stop, padname = '1' if m==1 else '3',
pcb_layer=pcb_layer)
# substrate
start = np.array([ring_ox, y2, z[0]])
stop = openems.mirror(start, 'xy')
stop[2] = z[1]+lidz
sub = openems.Box(sub, 1, start, stop)
# mask
if mask_thickness > 0.0:
start = np.array([ring_ox, y2, z[1]])
stop = openems.mirror(start, 'xy')
stop[2] += mask_thickness
openems.Box(mask, 1, start, stop)
# grounded end metal
if endmetal:
for xm in [-1,1]:
em1 = openems.Box(pec, 9, start = [xm*ring_ix, y2, z[1]],
stop = [xm*(ring_ix + 2.0*via_padradius), -y2, z[2]],
padname = '2', pcb_layer=pcb_layer)
def generate(
em,
sub,
mask,
min_width, # minimum copper width, typically design rule minimum
cutout_width, # width of ground plane cutouts
inductors,
capacitors,
z, # bottom of [air below, bottom metal, substrate, top metal, air above, lid]
port_length,
ms_width,
box_width,
half_fan_angle=0.25*np.pi):
em.mesh.AddLine('z', z[0]) # air above, below
em.mesh.AddLine('z', z[5])
em.mesh.AddLine('z', 0.5*(z[2]+z[3]))
em.mesh.AddLine('z', 0.25*(3*z[2]+z[3]))
em.mesh.AddLine('z', 0.25*(z[2]+3*z[3]))
em.mesh.AddLine('y', -0.5*min_width)
em.mesh.AddLine('y', 0.5*min_width)
box_length = 2.0*(np.sum(inductors) + capacitors[0] + 0.5e-3)
x0 = -0.5*box_length
x1 = x0 + port_length
x2 = x1 + ms_width
yb = 0.5*cutout_width
yo = -0.1e-3 # overlap
pec = openems.Metal(em, 'pec')
# substrate
start = np.array([ 0.5*box_length, 0.5*box_width, z[2]])
stop = np.array([-0.5*box_length, -0.5*box_width, z[3]])
openems.Box(sub, 1, start, stop)
# solder mask
if mask != None:
start[2] = z[3] + 25e-6
openems.Box(mask, 1, start, stop)
# top copper polygon
points = np.zeros((6+10*len(inductors),2))
points[0] = [x1, 0.5*ms_width]
x = -np.sum(inductors)
points[1] = [x - 0.5*ms_width, 0.5*ms_width]
points[2:10] = arc(x, 0, capacitors[0],
0.5*np.pi+half_fan_angle,
0.5*np.pi-half_fan_angle,
npoints = 8)
points[10] = [x + 0.5*min_width, 0.5*min_width]
i = 11
x += inductors[0]
for j in range(1, len(inductors)):
points[i+0] = [x-0.5*min_width, 0.5*min_width]
points[i+1:i+9] = arc(x, 0, capacitors[j],
0.5*np.pi+half_fan_angle,
0.5*np.pi-half_fan_angle,
npoints = 8)
points[i+9] = [x+0.5*min_width, 0.5*min_width]
i += 10
x += inductors[j]
# center cap
points[i+0] = [-0.5*min_width, 0.5*min_width]
points[i+1:i+5] = arc(0, 0, capacitors[-1],
0.5*np.pi+half_fan_angle,
0.5*np.pi + 0.001, npoints = 4)
print(points)
points = np.concatenate((points, points[::-1]*[-1,1]))
points = np.concatenate((points, points[::-1]*[1,-1]))
pec.AddPolygon(
points = points,
priority = 9,
elevation = z[3:5],
pcb_layer = 'F.Cu')
# ground plane
gpec = openems.Metal(em, 'ground_plane')
points = np.zeros((2+6*len(inductors),2))
points[0] = [x0, 0.5*box_width]
points[1] = [x0, yo]
i = 2
x = -np.sum(inductors)
for l in inductors:
hmw = 0.5*min_width
xl = x + hmw
points[i+0] = [xl,yo]
points[i+1] = [xl,hmw]
xl = x + yb
points[i+2] = [xl,yb]
xl = x + l - yb
points[i+3] = [xl,yb]
xl = x + l - hmw
points[i+4] = [xl,hmw]
points[i+5] = [xl,yo]
i += 6
x += l
print("ground plane",points)
for ym in [1,-1]:
gpec.AddPolygon(
points = [1,ym] * np.concatenate((points, points[::-1]*[-1,1])),
priority = 9,
elevation = z[1:3],
pcb_layer = 'B.Cu',
is_custom_pad = True,
x=0,
y=ym*(yb+0.1e-3),
pad_name='3',
)
for (xm,padname) in [(-1,2),(1,1)]:
# main line ports
start = [x0*xm, -0.5*ms_width, z[3]]
stop = [x1*xm, 0.5*ms_width, z[4]]
em.AddPort(start, stop, direction='x', z=50)
# pads
start[0] = x2*xm
l1 = openems.Box(pec, 9, start, stop, padname=padname)
