Four-Way Chained Quasi-Planar Slotted-HMSIW Power Divider

A four-way chained quasi-planar slotted power divider, using half-mode substrate-integrated waveguide technology, is presented in this letter. Based on the equivalent-circuit model, slotted capacitive coupling model has been achieved. In order to verify the validity of the design method, a four-way power divider operating at X-band is designed, fabricated and measured. The simulation and measured results with good agreement are presented. The measured insertion loss (in the frequency range of 9.05-9.55 GHz) is less than 1.4 dB, and the return loss is better than 17.5 dB. The measured isolations between the output ports are greater than 12 dB at the entire design band.