Either side or Both Side in Scientific Writing

Hello,

I am having a issue with clarifying how and in what direction the following three objects are placed in scientific technical writing... Could someone please tell me if it is okay to say:

'Antennas A and B are configured at both sides of Antenna C in parallel position on a substrate?'

or should it be
"Antenna A and B are configured on either side of Antenna C in parallel position on a substrate?

What I'd like to express essencially is that Antenna A, B, C are paralell to each other.


Thank you for your advice.