Re: radiation pattern in HFSS

Hey guys,

I managed to get some good results for the rad pat but with a small problem.

The E-plane rad pat seems to be shifted to the left a little, can someone please take a look at it? any ideas?

I've attached a snap shot for my rad pat, and the hfss file. Thanks :)

I'd really appreciate if someone can take a look at my results above :)

Could this shift in the rad pat be because I chose Boundaries--> PerfectE--> "Infinite Ground" ?

I've attached a snap shot of my results before applying the Infinite gnd for your reference. Appreciating your feedback.

In the two pictures you are showing different values.
One times it is radio patter e and the other time it is radio patter h.

Can't you test the effect of the infinite ground by comparing a simulation with and without the ground?

Hi Khaled,
i want the same results that it covers all the circle. but im nt getting the results like this what should i do?
i am using inf_ gnd. i am working on hfss v11, but their is no E & H plane defined. so step in result > far field > radiation pattern > -------------?- what should i select to see the graph which u have obtained.
i also want co & cross polarization.
Plz reply as early as possible
for theta i have selected 2 steps.

thanking u in anticipation

Have you set up the radiation boundary and the infinite sphere?
When you get a good 3d polar far field plot it should be ok.
For the 2d ration pattern you can sweep the theta angle at a fixed phi angle. You need more points than just two.

yes i have assigned radiation boundary & infinite sphere too. but didnt get results.

and 1 more height of GND plane affect on polarization ? if yes what should its value.

Thanking u in anticipation

Hi Chetali,

Have you checked my hfss file above? If you haven't still resolved your issue please let me know so I can help.

NO, i havent got my solution.
please, suggest its solution.

i changed inf_gnd to gnd so, im getting complete graph. but nt able to differentiate which is co and cross polarization.

can u plz solve my issue? im confused for E plane what is co & cross. becz u say 4 E & H plane gain phi & gain theta respectively . then wher is E plane co & cross ploz? n H also