Four-way waveguide power divider design for W-band applications

Abstract

In this article, a four-way waveguide power divider is proposed for W-band applications. The waveguide power divider employs an improved H-plane T-junction configuration. With the introduction of a metallic tetrahedral protrusion into the waveguide junction, good impedance matching can be achieved within a wide frequency range. First, a two-way power divider is designed and analyzed, achieving almost identical amplitude and phase response at its two output ports. Then, other two same T-junctions are cascaded, respectively, at the two output ports of the two-way power divider to realize the proposed four-way power divider. The four-way power divider has been optimized, fabricated, and measured. The measurement results agree with the simulation ones reasonably, which demonstrates that the input return loss of the proposed four-way power divider maintains above 14 dB across the entire W-band with an insertion loss of less than 1.3 dB. Therefore, it could find wide applications in W-band power splitting and combining modules.