50 GHz S-shaped rat-race balun with 1.4 dB insertion loss in a wafer-level chip-size package process | International Journal of Microwave and Wireless Technologies | Cambridge Core
Rat-race Junction - YouTube
Tri-Band RAT-Race coupler using resonators
Figure 10 from Simulation of Electromagnetic Wave Propagation in Microwave Directional Couplers and Rat-Race Hybrid Coupler Using Open Source Finite Element Software | Semantic Scholar
Novel rat-race coupler design of arbitrary coupling coefficient using substrate integrated waveguide cavity | International Journal of Microwave and Wireless Technologies | Cambridge Core
6.9 Rat Race Coupler - RF and Microwave Engineering: Fundamentals of Wireless Communications [Book]
Circuit detail of the proposed rat‐race‐coupler‐TFS‐based... | Download Scientific Diagram
Confluence Mobile - AWR Knowledgebase
Hybrid Ring or Rat race junction - Microwave Engineering - UNIT V - YouTube