Modeling the Reactive Effects of Folded Parallel Plate Waveguide Feeds for Connected Arrays
Caspar M. Coco Martin (TU Delft - Electrical Engineering, Mathematics and Computer Science)
Daniele Cavallo (TU Delft - Electrical Engineering, Mathematics and Computer Science)
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Abstract
Connected slot arrays are a type of ultrawideband phased array known for their wide-scanning capabilities. A suitable method to feed the slots is using parallel-plate waveguides (PPWs), which reduce the unit-cell complexity. However, current analytical models for connected arrays are unable to completely model the PPW feed, which usually necessitates a time-consuming design process using commercial antenna simulation tools. In this letter, we present a model for the PPW that incorporates the reactive components introduced by folding the feed. The proposed feed model can be incorporated into existing array models to jointly optimize the unit cell and the feed structure.
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