Balanced and unbalanced waveguide power splitters based on connected bi-omega particles

A new family of waveguide power splitters based on the use of connected bi-omega particles is presented. The new layout consists of a H-plane T-junction, whose ports are characterised by the same crosssection. The output ports are both closed with a metallic screen and energy is allowed to pass through by means of a vertical slit drilled into each metallic screen. To make the transmission efficient, two identical particles, printed on the two faces of a dielectric slab, are placed across the slits. Depending on the design, at the resonant frequencies of the two bi-omega particles, either balanced or unbalanced power splitting is obtained between the two output ports. A proper set of numerical simulations and measurements confirm the effectiveness of the proposed design, which can be successfully used for realising compact and highly selective waveguide power splitters.