Right type of excitation of half-wave dipole in HFSS

Please, tell me which of followed types suitable to excite lambda/2 dipole:
(dipole is used in antenna array of dipoles)

1. Voltage in the gap

2. Current along dipole

3. Lumped port on the sheet in the gap

I have used Lumped port in the gap and the results was very interesting.

hamidrezakarami, Lumped port on sheet? Width of sheet affect on pattern dosn't?

In 3-rd image blue axis is Y
Pattern in axes XY and ZY differ becose of lumped port radiance I think.

No Lumped port between two legs of dipole.

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