dear fyp05
i have a user's book for HFSS in V.10
maybe the answer of your Q can be found in that book.
just tell me, if you want that e-book, and i'll try to upload that user's book ASAP.
Best regards
Evyta
Hi fyp05,
You can easily plot the Gain vs Frequency using Hfss. Follow the following steps:
Go to HFSS-->Results-->create far field report-->rectangular plot
A new window will open up:
IN solution tab: select 'sweep1' or the name which you have given for the frequency sweep used for your antenna.
In Primarysweep tab: Select Freq, you can select on which frequency points you want to see the gain of your antenna by clicking at the corner of the tab in which 'All' is written,or if you will just select frequency it will by default take all the frequency points defined in your frequency sweep.
Click Families tab:
Theta: Choose appropriate value according to your antenna structure in which direction you want to see the gain of antenna.
Phi:Choose appropriate value according to your antenna structure in which direction you want to see the gain of antenna.
Then just plot and it will give you gain vs frequency plot as you wanted to see. IF you are having difficulty in picking the right values of 'Theta' and 'phi' at which to see the gain of antenna,post your file here and i will help you. IT is impossible to tell you without looking at your structure that which values of Theta and phi should be selected.
By looking at the graph you have attached, i am sure that you are not selecting the appropraite 'frequency sweep' in the solution tab,as a result HFSS is showing you the gain values on top of each other only at the solution frequency which in your case is 6GHz.
Hope it helps.
/SC
Hi,
In Result -> Create Far Fields Report -> Rectangular Plot
in Solution: only setup1:LastAdaptive is found. Setup1:Sweep1 is not found.
So, not able to plot gain at all frequencies and can plot at only solution frequency.
Please reply me the solution.
Hi,
In Result -> Create Far Fields Report -> Rectangular Plot
in Solution: only setup1:LastAdaptive is found. Setup1:Sweep1 is not found.
So, not able to plot gain at all frequencies and can plot at only solution frequency.
Please reply me the solution.
First of all, you have to create a new 'Solution Setup' yourself.
In Result -> Create Far Fields Report -> Rectangular Plot
And choose Sweep 1.
If you want to plot Gain against frequency, basically you are plotting a constant theta, and a constant phi over all frequencies.
Basically, choose one theta value and one phi value. And then sweep for all frequencies...then you can see the gain vs frequency correctly.
But, the chosen theta and phi must depend on you...what kind of antenna you design?
So my suggestion before you plot Gain vs Frequency, plot the 3D radiation pattern at the solution frequency, and observe which direction of phi and theta gives the best result.
Then just choose a constant phi and variables for theta ( 3 values enough). Then do the rectangular plot...
Try it yourself, don't depend on people spoon feeding u.
Then follow the :
Thanks for the reply friend. But my question is
"I already created solution frequency and added sweep to it. But the thing is , In Terminal solution data reports, i can find the SWEEP in solution
but in far field reports, i can find only LastAdaptive other than Sweeps in Solution.
Please find the following attachments for clear idea. I am using HFSS V13. Hope my question is clear to you now.
*** pictures, frodonet. Thats exactly what i meant.
Without this option you can plot the reflection coefficients etc., but you cannot plot the farfield parameters.
I realise what your problem is now.
Your problem is first that you set up your Sweep 1 without the Save Fields ticked. Once you ticked that, you able to see your Sweep 1 in your far-field report. You can choose it then.
Also refer the below images, i attached. Sure you'll understand how to plot the gain vs frequency after viewing the images i screenshot for you.
Setting for sweeping:
View attachment 69224
Choosing Gain Plot vs Frequency
View attachment 69225
View attachment 69226
Choose your phi and theta values
View attachment 69227
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