Tue to the limited space and local circumstances I designed a "special kite design".
A vertical glasfiber pole is used together with a horizontal spacer made out of carbonfiber covered by a thick aluminum foil.
At the bottom a 2-wire feed (2m) is goning to a balun and further with 50 Ohm to the station.

Antenna shape
Hight: 5,4 m
Width: 6,0 m