weve port + hfss
I am a new learner of HFSS (v9.2). I started with the examples given in Ansoft's web page: http://www.ansoft.com/ots/utraining.cfm
Among the sources listed in this page, there is the "hfss full book" which seems to me to be very useful for beginners like me: ftp://12.29.113.176/training/hfss/re..._full_book.zip
As I follow the forum posts, many of you are familiar with this book.
The 5th chapter of the book is devoted to antenna examples. I have followed the instructions in section 5.1 and 5.2 exactly the way they are written. But in both sections, the radiation boundary and wave port overlap. In section 5.1 example also the infinite ground boundary overlaps with the other two. This gives an error message like the following when I run the validation check: "[warning] Warning - Boundary 'Rad1', Boundary 'p1' : Boundaries overlap." In return, this avoids the simulation to be run giving a message like: "[info] Simulation completed with execution error on server: Local Machine. [error] Error decoding model data or writing it to disk."
I have double checked the instructions of the book, but everything seems to be in accordance with what book describes.
If you have gone through this book, did you experience similar problems? Or do you have any suggestions, ideas, how to overcome the problem? What may be wrong?
Thanks in advance.
EDIT: I have just tried to open and run my previous working proper *.hfss projects. They give the "[info] Simulation completed with execution error on server: Local Machine. [error] Error decoding model data or writing it to disk." message. I think the problem is: I have upgraded HFSS v9.0 to v9.2 two or three days ago and haven't run a simulation yet. My 3D Modeler etc. of v9.2 works proper but there is another problem with this v9.2 (server settings, licensing... etc). I will return back to v9.0 and try to see whether it will work or not. Sorry for disturbing you :(
EDIT 2: As I figured out, the problem was with v9.2. I returned back to v9.0, the overlap warnings still exist, but Analyze works properly.
Post here your hfss project it's the best way to get help.
As I have edited at the end of my first post, the problem was related with my HFSS v9.2. With v9.0 I could run the project and got the same results shown in the book.
In the future, if I have any questions about HFSS, I will also attach my project as you suggested. :D Thanks.
you can look the sample P.5.2-11 Create Radaition Boundary
select mode--->face
cover alll object except wave port then you can get it:D
Ok. I see. But what do you think, doesn't this change the solution result? I mean isn't there a difference between selecting a surface as a radiation boundary or not?
because wave port is used to simulation closed plane,and would extend to infinite far away, if the wave port is included in the object you set its face as radiation boundary ,the problem you said would appear
Added after 1 minutes:
to deal with this problem ,the best way is to set an inner object ,the help document can give you details, and another way is to use lumped port
If you haven't patches your hfss 9.2 to 9.2.1, you can get it here (bottom of post).
Topic: Summary of Updates in HFSS v9.2 and IE3D 10.2
https://www.edaboard.com/viewtopic.php?p=530099#530099
xxx.
you must setting the "Air_BOX" > your "Object"..
if your object size with your wave_port is (x,y,z)= 10,10,10
the "Air_BOX" must setting to > 11,11,11..
I tried foxman's solution, but it didn't work for me. The airbox completely surrounds the uhf probe design.
I've searched the forum, and have found multiple posts with the same problem, but no solution. This is the hfss file from the manual (page 146). I've tried to fix the error, but no luck. Let me know if anyone can fix this. I know that the airbox doesn't completely surround the object, but doing that didn't help at all. Let me know if you know how to fix this. Thanks.
Found it. You need to right click 'Boundries' in the product tree. Then click reprioritize, and switch ground plane and rad1.
Also, if you simulate other examples in the tutorial, like the Bowtie antenna, you need to increase the number of passes in the analysis section 'setup1' of the product tree.
Hi all:
I have 2 questions regarding lumped-port and manual mesh. I think many who read this topic are HFSS experts ;)
If you don't mind, could you please give some advice on this topic:
https://www.edaboard.com/viewtopic.p...096&highlight=
Kevinj: Glad you found solution.
PS: You can educe the structure inside the air-box to make it fit inside the air-box (it won't change results much).
I got the same problem before. I just cut the overlapping parts of the PEC structure and waveport,it do works.and thanks for kevinj's new clue.