Analysis and Design of A High Directivity Compact Waveguide Coupler Using 3-Hole Aperture Array

A compact 10 dB E-Plane waveguide directional coupler with full bandwidth

“…Besides, it extensively applied in lots of microwave and millimeter wave system [2]. At high frequencies, waveguide structures are often used because of their low insertion losses and high power handling capabilities.Many approaches have been proposed to widen their band, including multi-aperture and continuous apertures configurations, and narrow-wall structures [3]- [5].…”