In this paper. an enabling multi-operation branch-line coupler is proposed initially. The proposed design is configured by ±90° and 180° transmission lines. and the main advantage is that the proposed design can be applied in three different system connection schemes as shown in Fig. https://www.diegojavierfares.com/quick-offer-Little-Ollie-174-Dwarf-Olive-Monrovia-super-sale/