radiation pattern in HFSS

Hey,i m facing problem in getting the radiation pattern in HFSS 11,somebody please tell me about the options that i need to set in the traces window to get a new report of radiation pattern.i am getting the return loss plot.hope for an early response.*** bless u

i guess i found the solution myself.after analyzing,go to HFSS>RESULTS>FAR FIELD >RADIATION PATTERN.

Hi,
Can anybody help me.....pls answer the questions, I am new user of HFSS, using v10 !

1. What solution type I should select to simulate an microstrip antenna?
2. What values of theta and phi should I put in the radiation setup to get good results?
3. How to see the current distribution?

Thanks

Hello,
1. Use Driven Model with a waveguide port
2. I think the stanard values are ok
3. You can plot the J-field under the "Field Overlays"

hi.
1- for microstrip better using the lump port
2- for phi and theta the step of 5 is good
3-for current as flanello said

Why is using a lumped port better?
If you have a microstrip antenna with a microstrip feed line the waveguide port would be ideal?

The lumped port is good if you have a feed point in the patch, for example with a coaxial cable.

hi
no thats not write for patch antenna better u use wave port for coaxial

for more information use antenna design kit samples

Thanks for your response :)
As example given in the HFSS Handbook, they have used waveport for microstrip antennas with coaxial probe feed, I am also doing that!

one more question...How I can see the E-plane and H-plane in HFSS?

waiting to hear from you...:)

hi
go result /far field /radiation pattern / gain/ gain phi and gain theta

Hi,
So how i can see the Gain in rectangular plot over a range of frequency, I want to see the peak gain...
Could anyone help me,pls... :)
Bless u

hi
at first you should define your antenna radiation direction and then u change the sweep to the frequency and define theta and phi the simulated your antenna

Create a rectangular plot with far fields.
For the sweep select all frequencies and one theta and phi angle. Which one doesn't matter since you want the peak gain.
In the y values select antenna parameters and then peak gain.

Hi,

I'm looking for two different plots for my rectangular patch antenna on HFSS.

1) E-plane
2) H-plane

I've been able to get results such as Gain, Directivity, S11, etc... but haven't been able to get the correct E&H radiation plots.

Thanks:)
Khaled

go result /far field /radiation pattern / gain/ gain phi and gain theta

Hi,

But then this is the output I get!?

Theta as primary sweep and all values, phi=0/90.
See the pattern for one frequency only.

Best luck :)

Hey,

I followed your steps, do these look like good results? Appreciating your feedback.

Thanks :)
Khaled

The straight lines indicate that you have not enough points to draw a smother diagram. How many Theta points do you have?
Check the settings under Radiation->Infinte Sphere, perhaps you need to increase the number of points.

Radiation->Infinte Sphere>>change the theta settings from -180 to 180 or 0 to 360 degree.

And check the step settings. I think 10 degrees is the standard value, but perhaps you need a higher step size.