ArticleScientific reports2025
A new design technique and realization of gysel power dividers in substrate integrated waveguide for Ku-band applications.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
This paper introduces a new design technique for Gysel power dividers (PDs) in substrate-integrated waveguide (SIW) technology, suitable for both equal and unequal power division. The method tackles the usual challenges linked to the cutoff frequency and line-width constraints, which often prevent direct application of standard Gysel formulas in SIW-based designs. By deriving new equations, we can achieve any power split while keeping the line width and cutoff frequency constant. Analytical models at Ku-band frequencies confirm this approach for both equal and unequal splits, and two SIW-based PDs operating at 15 GHz are designed and simulated. Moreover, we fabricated a prototype for the equal-power case to validate the design. Measured results show an isolation above 22 dB at 15 GHz, a return loss better than 10 dB at each port, and a 2.44 dB insertion loss, all closely matching the simulated data. This demonstrates the effectiveness of the proposed design approach.
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