Feed excitation

How to use openEMS. Discussion on examples, tutorials etc

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openems
Posts: 16
Joined: Tue 24 Mar 2020, 06:07

Feed excitation

Post by openems » Tue 09 Jun 2020, 07:46

How exactly a feed works? what and all components does it has? like is it a metal plate or it is just voltage changes from one point to another point? Can anybody tell me the model used for feed and any documentation for the feed..

Hale_812
Posts: 171
Joined: Fri 13 May 2016, 02:54

Re: Feed excitation

Post by Hale_812 » Wed 10 Jun 2020, 03:28

Feed is a transmission line connecting the device of interest to power source.
You, probably mean a port.

In general, most ports are voltages over a load block in OpenEMS, except plane wave excitation, which is represented by a cube with boundaries pulling a plane inside, and cancelling it outside, for pure scattering analysis.

So, when you are taking a microstrip port, the power will flow in opposite directions. Therefore you need either a PML on the other side, or a reflecting termination.

gopugnair11
Posts: 3
Joined: Sat 13 Jun 2020, 16:14

Re: Feed excitation

Post by gopugnair11 » Sat 13 Jun 2020, 17:25

How to find feed position in simple patch antenna?kindly provide the tutorial of meander line antenna design at 0.9 Ghz frequency.

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