Create a planar circle

[gadiLhv]

Apart for manually defining points as a circular XYPolygon , is there a way to create a planar circle?

[FennisRobert]

Several options: 1. em.geo.Disc 2. em.geo.XYPolygon.circle() <-- Actually just an N-sided polygon

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On Mon, Aug 18, 2025 at 12:15 PM Gadi Lahav ***@***.***> wrote: Apart for manually defining points as a circular XYPolygon , is there a way to create a planar circle? — Reply to this email directly, view it on GitHub <#8>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/A4EZODMKSG6NKHEKCS3POET3OGRT5AVCNFSM6AAAAACEEUS6KSVHI2DSMVQWIX3LMV43ERDJONRXK43TNFXW4OZYG42TIMRQGA> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[gadiLhv]

Thanks, Disk solved the issue, kind of.

I am working on a Wilkinson splitter TB. Still got ports to define and some local mesh defintions, but I'm getting there.

[FennisRobert]

Did you check the PCB() class and the supported features?

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On Mon, Aug 18, 2025 at 3:39 PM Gadi Lahav ***@***.***> wrote: Thanks, Disk solved the issue, kind of. I am working on a Wilkinson splitter TB. Still got ports to define and some local mesh defintions, but I'm getting there. image.png (view on web) <https://github.com/user-attachments/assets/a4cf3617-3751-4c7f-a746-124e221afe48> — Reply to this email directly, view it on GitHub <#8 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/A4EZODLI4AOFWF4J5AACO5T3OHJS7AVCNFSM6AAAAACEEUS6KSVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTIMJUGEYTSMI> . You are receiving this because you commented.Message ID: ***@***.***>

[FennisRobert]

[image: image.png][image: image.png]

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On Mon, Aug 18, 2025 at 3:39 PM Gadi Lahav ***@***.***> wrote: Thanks, Disk solved the issue, kind of. I am working on a Wilkinson splitter TB. Still got ports to define and some local mesh defintions, but I'm getting there. image.png (view on web) <https://github.com/user-attachments/assets/a4cf3617-3751-4c7f-a746-124e221afe48> — Reply to this email directly, view it on GitHub <#8 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/A4EZODLI4AOFWF4J5AACO5T3OHJS7AVCNFSM6AAAAACEEUS6KSVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTIMJUGEYTSMI> . You are receiving this because you commented.Message ID: ***@***.***>

[FennisRobert]

[FennisRobert]

import emerge as em


m = em.Simulation('wilkinson')


pcb = em.geo.PCB(1.5, 0.001, em.GCS, material=em.lib.DIEL_FR4)

w0 = 2
pcb.new(0,0,w0, (1,0)).store('p1').straight(20).split((0,1)).straight(5).curve(180,30).store('n1')\
    .merge().split((0,-1)).straight(5).curve(-180,30).store('n2')

pcb.new(*pcb.load('n1').xy, 5, (1,0)).straight(5).turn(-45, width=w0).straight(20).store('p2')
pcb.new(*pcb.load('n2').xy, 5, (1,0)).straight(5).turn(45, width=w0).straight(20).store('p3')


traces = pcb.compile_paths(merge=True)

lp1 = pcb.lumped_port(pcb.load('p1'))
lp2 = pcb.lumped_port(pcb.load('p2'))
lp3 = pcb.lumped_port(pcb.load('p3'))

pcb.determine_bounds(10,10,10,10)

diel = pcb.generate_pcb()
air = pcb.generate_air(10)

m.commit_geometry()
m.mw.set_frequency(1e9)

m.generate_mesh()

m.view()

[gadiLhv]

I saw it in the coupled line filter example. Couldn't 100% figure out the syntax, but had a go anyway...

[gadiLhv]

Is there any way to emulate a resistive sheet for a 100 Ohm resistor? Or does EMerge support lumped elements by now?

[FennisRobert]

Have you even checked? Model.mw.bc.LumpedComponent

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On Mon, 18 Aug 2025 at 16:13, Gadi Lahav ***@***.***> wrote: Is there any way to emulate a resistive sheet for a 100 Ohm resistor? Or does EMerge support lumped elements by now? — Reply to this email directly, view it on GitHub <#8 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/A4EZODIOASHAYVGUFZMIJS33OHNQ3AVCNFSM6AAAAACEEUS6KSVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTIMJUGE2TQMY> . You are receiving this because you commented.Message ID: ***@***.***>

[FennisRobert]

there is literally an example called: lumped component filter

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On Mon, 18 Aug 2025 at 16:13, Gadi Lahav ***@***.***> wrote: Is there any way to emulate a resistive sheet for a 100 Ohm resistor? Or does EMerge support lumped elements by now? — Reply to this email directly, view it on GitHub <#8 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/A4EZODIOASHAYVGUFZMIJS33OHNQ3AVCNFSM6AAAAACEEUS6KSVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTIMJUGE2TQMY> . You are receiving this because you commented.Message ID: ***@***.***>