Implementation of three-way power divider based on substrate integrated waveguide

Abstract

This paper presents the design, fabrication, and measurement results of an X-band 1×3 substrate integrated waveguide (SIW) power divider. The 1×3 SIW power divider provides equal amplitude with uniform phase distribution at each output port. These features are demonstrated by measurements experimentally. The amounts of measured power at the output ports are quite close to ideal power equality factor (4.77 dB) for three-way power division. Operating bandwidth of the fabricated divider is nearly 17.5% and reflection coefficient is better than −18.75 dB at the design frequency of 10 GHz as shown in both simulation and measurement results.