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How extract s-parameters in EditFeko

Hello,

I have an array of receiver/transmitter antenna point located on the same plane.(our antenna are modeled with just point source). I have a simple object in front of my array. I wish to perform synthetic aperture radar imaging. So, I want to transmit signal to the image in transmitters' locations and receive reflected waves and calculate s-parameters from transmitters to receivers. at first I thought I have to receive scattered electrical field. my code is something like this:

** source
!! for #iT=0 to 15
!! for #iR=0 to 87

A5: 0 : : : : : 1 : 0 : #Tx[#iT] : #Ty[#iT] : 15 : 180 : 0 ** ElectricPoint1

** #Tx[#iT] : #Ty[#iT] are "x" and "y" coordinates of transmitters

** StandardConfiguration1

NC: StandardConfiguration1
DA: 0 : 0 : 0 : 0 : 0 : 1 : : : 2

** Near field: NearField1
DA: 3 : 2 : 2 : 2 : 0 : 1 : : 0 : 2
OF: 1 : 0 : : : : 0 : 0 : 0 : 0 : 0 : 0
FE: -3 : 1 : 1 : 1 : 0 : #Rx[#iR] : #Ry[#iR] : 15 : 0 : 0 : 0 ** NearField1

** #Rx[#iR] : #Ry[#iR] are "x" and "y" coordinates of receivers

!!next
!!next

** source

But when I watched this video:
(1) Synthetic Aperture Radar Imaging using Back-projection - HFSS and MATLAB code - YouTube

I changed my mind about it and decided to extract s-parameters. I do not know how to do it. at first, I ran this code:

** source
!! for #iT=0 to 0
!! for #iR=0 to 87

A5: 0 : : : : : 1 : 0 : #Tx[#iT] : #Ty[#iT] : 15 : 180 : 0 ** ElectricPoint1
L2: -1 : : : 0 : 0 : 50 : 0 : #Tx[#iT] : #Ty[#iT] : 15 : : : 0 ** source
LT: 0 : : : source : 0 : 50 ** source

** StandardConfiguration1

NC: StandardConfiguration1
DA: 0 : 0 : 0 : 0 : 0 : 1 : : : 2
L2: -1 : : : 0 : 0 : 50 : 0 : #Rx[#iR] : #Ry[#iR] : 15 : : : 0 ** sink
LT: 0 : : : sink : 0 : 50 ** sink

** Near field: NearField1
DA: 3 : 2 : 2 : 2 : 0 : 1 : : 0 : 2
OF: 1 : 0 : : : : 0 : 0 : 0 : 0 : 0 : 0
FE: -3 : 1 : 1 : 1 : 0 : #Rx[#iR] : #Ry[#iR] : 15 : 0 : 0 : 0 ** NearField1

SP: 1 : 0

!!next
!!next

But It results in the following error:

ERROR 17: Undefined wire port node/connection point

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English

Feko

v2020.1

Accepted answers

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Raja Devata

Hi,

Good to hear from you.

It will be easy to perform this kind of simulations using CADFEKO (rather than the EDITFEKO) and request the S- Parameter configuration from the request tab.

Here is the screenshot to request the s-parameter configuration.

In the same way, You can request the S-Parameters request from EDITFEKO.

I am sharing the example files for your reference which is having the s-parameter request (Both in CADFEKO & EDITFEKO).

You can use lua scripting or Altair compose software to write the script for Synthetic Aperture Radar Imaging.

Thanks!

Regards,
Raja.

Community-Pasted-Attachment-1700664156573.png

Raja Devata

Hi,

Good to hear from you.

It will be easy to perform this kind of simulations using CADFEKO (rather than the EDITFEKO) and request the S- Parameter configuration from the request tab.

Here is the screenshot to request the s-parameter configuration.

In the same way, You can request the S-Parameters request from EDITFEKO.

I am sharing the example files for your reference which is having the s-parameter request (Both in CADFEKO & EDITFEKO).

You can use lua scripting or Altair compose software to write the script for Synthetic Aperture Radar Imaging.

Thanks!

Regards,
Raja.

I am attaching the files. Please go through them.

Thanks!

Regards,

Raja

S-Parameters.cfx

S-Parameters.pre

Mike_21335

I am attaching the files. Please go through them.

Thanks!

Regards,

Raja

hello @Raja Devata ,
Thank you for your helpful answer. But I think there is a problem with ".cfx" file. Because it results in the following error:

Error 17604: an error has occured while opening the project. Please check error message window.

There was no "message window" to bring the content here. can you please post it here? because I can not run ".pre" file without that.

Thank you so much