gap feeding problem in a cavity slot antenna

Dear friends
I try to simulate a cavity slot antenna with HFSS v11 but I get incorrect result!
I think it's because of my wrong feeding !(gap feeding)
but what is the correct feeding ?
In the paper is mentioned that :
The feeding is applied between inner conductor and perfect electric conductor""
But I think I can?t apply gap feeding correctly!
How should I apply gap feeding in this model correctly

my hfss file and the cavity antenna paper is attached.

In order to apply gap feeding I face with this error in my analysis :

Non-Manifold edges error

I think with Heal command in the:
Modeler>model analysis>heal
It may be solved
But I ,m not sure exactly
Can every body help me about this too?

Is your problem solved? actually i have similar kind of problem..so want a little help..

yes what's wrong?
i'll be glade if i can help.
tell your problem.

I am working on same type of antenna and have the same problem of gap feeding.The link to reference paper is given in next post since there was some problem in this website's uploader.
Does gap feeding means setting a lumped port btw metal wall and inner conductor?

---------- Post added at 16:55 ---------- Previous post was at 16:54 ----------

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