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RF Transient Far Field

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Hi All,

I'm wondering if anyone knows if it is possible to calculate the the far field radiation pattern when modeling in the time domain.

Currently I'm modeling some pulsed terahertz photoconductive antennas, that is... dipole antennas on a semiconductor substrate, excited by defining a time-varying surface current in the dipole gap. There are multiple layers in the substrate, and I would like to see how these layers affect the far field shape of the emitted pulse.

From what I see, to do a far field setup you need to have PML boundaries defined. However, It looks like PMLs are not available in the transient solver.

If anyone has advice, it will be greatly appreciated.

-Nathan

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