

Or if you want to get more involved, make a couple of 3el yagis, make a small phased array out of these by plugging them in a directional coupler or 4x4 butler matrix and this will get you two or four receiving directions in a 90 degree segment. If you only want to use that small segment you don’t need a LPDA, regular yagi would be fine
wait, it sounds like you want to use something called four square antenna, but it’s usually only made for HF. you’d have to rework it significantly for microwave region http://tm1o.free.fr/4SQ/80m/en_ver_final4-sq_03_04_15.pdf instead of transformers you’d have to use segments of transmission lines with right impedances and some directional couplers, gives direction immediately, no need to compare phase between different SDRs