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    • Rahul Ponginan

      Please click here for a short but important announcement   03/26/17

      Dear Users Our Commercial and Academic users around the world can use these same forums here as before i.e. the Altair Support Forum , Commercial users from India with solver queries can go to the Solver Forum for India Commercial Users , Academic Users from India and AOC India Participants are requested to go to the Forum for India Academic Users and AOC India Participants , We will be tending to all queries in all the forums promptly as before, thank you for your understanding. 

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  1. Dear Expert FEKO, Thank you for your explanation. This means that the radius of the wire segment is different with the radius of the wire that I use as the dipole antenna? I have attached the CADFEKO model of my design.
  2. Hi expert Feko, I would like to ask FEKO team about the warning that I received when I have tried to simulate my dipole antenna using wire port. What does the warning mean so that I can make improvements to my model to achieve the results? Thank you, attach is the warning message.
  3. Dear Expert FEKO, Thank you for your explanation. This means that the radius of the wire segment is different with the radius of the wire that I use as the dipole antenna? I have attached the CADFEKO model of my design.
  4. Dear Expert FEKO, Thank you for your explanation. This means that the radius of the wire segment is different with the radius of the wire that I use as the dipole antenna? I have attached the CADFEKO model of my design. dipole antenna.cfx
  5. Magnetic Coil

    Dear Expert Feko, Good day, Kindly help to check my design, I have created two coils named as TC and RC with my experiential configuration values, and I am trying to measure Z - Impedance values on RC with respect to TC movement. But It looks like the values are not changing. and even the values of Z impedance while measuring on RC looks different as compared to experimental results. Can you please help me to check my model, if I am measuring or doing any wrong step on FEKO. Looking forward to hearing from you, Regards helix.cfx
  6. FEKO introduction

    Dear Expert FEKO, I am a researcher in microstrip antenna. I am working with CST now, but I want to change to FEKO software. I made a research about FEKO and I would like to ask you about the following: 1) Why does the model simulation in FEKO not consider the width of copper thickness? 2) If the thickness of copper will be considered, what is the type of excitation will be right to use in microstrip antenna? Thank You for your help,
  7. Hi Expert Feko, Good day, I would like to know how to design an array antenna from a design of single antenna operates at 2.6Ghz, how we want to transform and copy the single antenna so that we can make it array, in CST it has the transform and copy button so that we did not need to design it repeatedly the patch on top of the substrate, so hopefully that you guys can help me by providing some step. Thank You. Attach here is my single antenna pika.cfx
  8. how to design array antenna from single antenna in FEKO

    Thank You, sir. I Have already viewed the video, and I would like to know if there is an example video that provides the design of antenna array 2x2 with power divider. I have already designed the full array 2x2 in other software and already fabricate it. and I would like to try design using FEKO. do you have any video example on how to design array 2x2 with power divider in FEKO? attach is the example of array 2x2 with power divider. hope you can help me. thank you for your kind help.
  9. WPT link with feko

    hello, Hi, I have a similar problem here, below are my problem, I am still new in FEKO and I am interested in design magnetic coils using FEKO, Kindly can you give me the idea how start in design coils in FEKO? should I start design by using icon helix in FEKO toolbars or used others icon? below are my explanation, I would like to start with creating two different magnetic based coils as Transmitting coil (TC) and Receiving coil (RC), to measure the Z impedance values changes with respect to the movement of TC around RC. Following are the configuration which I would like to proceed, Transmitting Coil: L 67 uH Q 22 Ccalc 24.19 nf - - F 125khz Receiving Coil: Coil Configuration L 728.73 uH Q 53.24 R 15kohm Ccalc 2.224nf F 125khz - - The Receiving Coil (RC) resonated at a frequency of 125kHz and diameter of 7cm. Transmitting coil (TC) dimension is 9 x 9 x 9 mm^3. Datasheet of RC as: https://www.rfsolutions.co.uk/downloads/1457021091DS-ANT-125K.pdf Initially, the RC and TC will be 3cm away from each other on z axis. The Impedance( |Z| ) value can be measured with respect to the movement of TC on x-axis/y-axis. -> The RC: loop antenna actual dimension, the copper wire diameter, number of turn, the diameter. (the details of the coil determine the inductance value) For RC: 0.236mm diameter (34 swg) Enamelled Cu wire. Diameter Antenna: 7cm internal , Number of turns: 67 turns Inductance: 700uH Quality Factor (Q): 17 For TC: Inductance: 67 uH Quality Factor (Q): 22 Capacitor: 24.19 nf Frequency (F) 125 kHz Number of turns: 52 Diameter: 8mm -> Matching circuit details. Matching circuit For RC : C = 2.3159nF (Formula:F=1/2π √LC) Matching circuit For TC : C= 24.19nF (Formula:F=1/2π √LC) Kindly help and guide me to provide step to start my design. Looking forward to hearing your comments on it, Regards,
  10. Hi Good day, I would like to start with creating two different magnetic based coils as Transmitting coil (TC) and Receiving coil (RC), to measure the Z impedance values changes with respect to the movement of TC around RC. Following are the configuration which I would like to proceed, Transmitting Coil: L 67 uH Q 22 Ccalc 24.19 nf - - F 125khz Receiving Coil: Coil Configuration L 728.73 uH Q 53.24 R 15kohm Ccalc 2.224nf F 125khz - - The Receiving Coil (RC) resonated at a frequency of 125kHz and diameter of 7cm. Transmitting coil (TC) dimension is 9 x 9 x 9 mm^3. Datasheet of RC as: https://www.rfsolutions.co.uk/downloads/1457021091DS-ANT-125K.pdf Initially, the RC and TC will be 3cm away from each other on z axis. The Impedance( |Z| ) value can be measured with respect to the movement of TC on x-axis/y-axis. -> The RC: loop antenna actual dimension, the copper wire diameter, number of turn, the diameter. (the details of the coil determine the inductance value) For RC: 0.236mm diameter (34 swg) Enamelled Cu wire. Diameter Antenna: 7cm internal , Number of turns: 67 turns Inductance: 700uH Quality Factor (Q): 17 For TC: Inductance: 67 uH Quality Factor (Q): 22 Capacitor: 24.19 nf Frequency (F) 125 kHz Number of turns: 52 Diameter: 8mm -> Matching circuit details. Matching circuit For RC : C = 2.3159nF (Formula:F=1/2π √LC) Matching circuit For TC : C= 24.19nF (Formula:F=1/2π √LC) kindly can you suggest me the step or user manual for me to start on to this project. Looking forward to hearing your comments on it, Regards
  11. Hi, I would like to have some guide on import other files into Feko. it is because when I import some files, there are some parts missing. kindly may I know how do need to import other files to FEKO without effecting the original model? thank you for your kind help.
  12. How To Import other file ie: IGES file to Feko

    Dear Mel, Good day, I have already tried, the result still shows the same. there some part missing ie: port, substrate did not define, ground missing, all part is set to by default. While I have already defined in other design software. Kindly help to explain me further how to import correctly, so There would be no part missing and not define when import into FEKO. Thank You for your kind help. Attach is when I have import IGES file to FEKO. array 2x2 antenna at 2.6Ghz.igs
  13. How To Import other file ie: IGES file to Feko

    Dear Mel, Good day, I have already tried, the result still shows the same. there some part missing ie: port, substrate did not define, ground missing, all part is set to by default. While I have already defined in other design software. Kindly help to explain me further how to import correctly, so There would be no part missing and not define when import into FEKO. Thank You for your kind help. Attach is when I have import IGES file to FEKO.
  14. FEKO

    hi, I would like to ask FEKO team about the warning that I received when I running the near field request. I am doing dipole antenna using wire port. What does the warning means so that I can make inprovement on my model to achieve the results. I have attached the warning image with this email. Hope to hear from you soon to help me encounter this problem. Thank you. WARNING 2340: No further output of warnings and hints WARNING 81: Singular field on the axis of segment
  15. feko warning

    HI FEKO Expert, I would like to ask FEKO team about the warning that I received when I running the near field request. I am doing dipole antenna using wire port. What does the warning means so that I can make inprovement on my model to achieve the results. I have attached the warning image with this email. Hope to hear from you soon to help me encounter this problem. below are my warning details: Warning 81: singular field on the axis of a segment Warning 2340: No further output of warnings and hints Thank you.
  16. Antenna Array

    Hi, I am new in Feko, can anyone here provide me a tutorial how to design an array microstrip antenna? because i couldnt find any tutorial on designing array microstrip antenna. Thank you for anyone that provide me tutorials.
  17. ERROR 31016:

    hi, i am new in FEKO, may I know what is the problem in my simulation? it shows below; Credentials for rejected connecting to SALESKL2-PC ERROR 31016: Error opening file Power_Loss_Density try 2m distance with single patch at 2.6Ghz_fr_1_ada_1.bof (rc=101 Thank you for your kind help,
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