Half mode substrate integrated waveguide (HMSIW) multi-way power divider

With merits of low loss and highly integration, substrate integrated waveguide (SIW) has been widely used in the designs of modern microwave and millimeter circuits. However it suffers from the big size in low microwave band. Recently, a novel half mode substrate integrated waveguide (HMSIW) has been proposed, which keeps the good performance of SIW with a nearly 50% reduction in size. So far, no HMSIW multi-way power divider is reported, mainly because of the unsymmetry of itself. In this paper, a new HMSIW T-juncion is proposed, with which the design of HMSIW multi-way power divider become feasible, and two classes of multi-way power dividers. The agreement between measured data and simulated results shows that HMSIW can be used to design effective feeds for planar array antenna.