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TE and TM Port excitation
Posted 2016年7月7日 GMT-4 10:00 RF & Microwave Engineering, Modeling Tools & Definitions, Parameters, Variables, & Functions Version 5.2 0 Replies
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I set up a simulation for a plane-wave incident on an interface (see e.g. first part of "Scattering on a Substrate" COMSOL tutorial).
I would like to have an input E field on the port with is mixture of TE and TM polarizations. I was trying to define the case with xz as incidence plane and plane wave propagating toward -z direction. I set k=(k*sin(theta),0,-k*cos(theta)) with theta the angle of incidence and on the ports I set all three components of E (Ex,Ey,Ez) as
Ex=sin(theta)*cos(phi)*exp(-i*k*x)
Ey=sin(phi)*exp(-i*k*x)
Ez=cos(theta)*cos(phi)*exp(-i*k*x)
where phi is the angle of E vector with the xz-plane.
It looks that there is a problem when I define a E field vector with a normal component to the port because I so not obtain the analytical results. Did any of you encountered this problem?
Thank you
Luca
Hello Luca Carletti
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