in principal your drawing looks like a colinear antenna
it could be fed at the lower end of each of the red and blue sections by coax with a sleeve balun
have a look at this coaxial antenna drawing of mine that I have built in the past and see if the representation
is similar to what you are suggesting....
https://www.sydneystormcity.com/microwave.htm
scroll about 2/3 way down the page, just past the transverter and tripler
you will find a drawing of a colinear on the left and dipole on the right
cheers
Dave