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I bought the following dipole antenna:

enter image description here

Now I want to add some extra simple reflector and directors next to this dipole to construct a Yagi-Uda antenna. For this aim, I need to know where is its feeding point (its center for a dipole antenna ). Eventualy I removed the cover of the antenna as follows:

enter image description here

My question is that where is the feeding point of this antenna In this last figure? Is it as in the following figure? If it's not, could you show it? enter image description here

By the way, the antenna link is here : with an NRF24L01 Module

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That is a quarter wave monopole antenna and it is end fed by an unbalanced coax feed from an unbalanced (ground referenced) source. It's not a half wave dipole (balanced centre-fed) so it won't make a good choice for a Yagi antenna.

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