Multimode Equivalent Network for Boxed Multilayer Arbitrary Planar Circuits

This work was supported in part by the Spanish Government through the Ministerio de Educacion, Cultura y Deporte under Grant FPU15/02883 and in part by the Ministerio de Economia y Competitividad through the sub-projects 4, 2, and 1 of the coordinated project under Grant TEC2016-75934-C4-R.