Design of a feed network for cosecant squared beam based on suspended stripline

For the cosecant square beam pattern application of an 8-element antenna array, we designed a 8-way non-equal power-divider based on Wilkinson scheme. An improved suspended stripline(SSL) structure is proposed and analyzed here, by using which as planar transmission line, the designed power-divider has good performance in the insertion-loss, and the excitations for output ports agree well with the simulated results.