Designing and Analysis of Folded H- Plane Waveguide Power Combiner For K-Band

Abstract

This research work presents the design and numerical analysis of a folded K-band electromagnetic structure i. e. power divider/combiner for operating frequency range from 18 GHz to 26 GHz. A three-dimensional multilayer geometry was modelled and optimized using CST Microwave Studio. The proposed structure shows selective transmission behaviour, supporting two distinct propagation paths characterized by S₂₁ and S₃₁. The simulated results depict deep resonances between 22–23.6 GHz, moderate passband behaviour in the 24–26 GHz range, equal power division between 18-21 GHz. The compact structure of the design—using dielectric sections in cascaded form and metallic boundaries—makes it suitable for integrated microwave systems, filtering networks, and compact front-end modules.