Full-Band Millimeter Wave Waveguide Magic Tees and Power Dividers for Manufacturing Ability

Abstract

In this paper, a full-band millimeter wave waveguide magic tee design that is friendly to computer numerical controlled (CNC) machining, manufacturing assembly and industrial standard production processes is presented. Traditional magic tee designs either barely cover the full waveguide bandwidth or are difficult to fabricate with consistent electrical performance. An improved magic tee junction utilizes a simple post in the middle of the junction and stepped waveguide transformers to provide the mechanical mate with standard waveguide openings and flanges. The dimensions of the magic tee junction are EM simulated and optimized by considering the variations of the manufacturing process for optimal performance and high reproducibility. An E-band magic tee and a V-band four-way power divider are presented to demonstrate the improved designs. The newly developed magic tee and power divider have shown good performance for full band coverage with high production yields in manufacturing environments.