High power short slot hybrid 3db coupler.

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Analysis and design of ultra-wideband PRGW hybrid coupler using PEC/PMC waveguide model

High Power Waveguide Short Slot Hybrids - Mega Industries

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Sami TANTAWI, Professor (Full), Stanford University, CA, SU, SLAC National Accelerator Laboratory

Improved Narrow-Wall Short Slot Coupler Design Exhibiting Significant Increased Bandwidth and Low Cost Production

US4686493A - Wideband short slot hybrid coupler - Google Patents

Directional and Hybrid Coupler – MIRAD microwave

Micromachines, Free Full-Text

Juwen WANG, Ph.D., Stanford University, CA, SU, SLAC National Accelerator Laboratory