A review of hybrid couplers: State‐of‐the‐art, applications, design issues and challenges - Abdulbari - 2021 - International Journal of Numerical Modelling: Electronic Networks, Devices and Fields - Wiley Online Library
Equivalent circuit of the 180° hybrid coupler. | Download Scientific Diagram
Figure 1 from Multilayer 180$^{\circ}$ Coupled Line Hybrid Coupler | Semantic Scholar
Lecture -- Quadrature Hybrid Coupler - YouTube
The 180 o hybrid coupler (a) the conventional coupler (b) layout of the... | Download Scientific Diagram
Planar 180° hybrid coupler with non-interspersed ports for millimeter-wave applications | International Journal of Microwave and Wireless Technologies | Cambridge Core