Abstract
An efficient, accurate, and tunable circuit model is presented for modeling of the substrate integrated waveguide (SIW) series-fed dielectric resonator antenna (DRA) array. For much improved model flexibility, the mutual coupling between antenna elements is taken into account and represented by a fully adjustable model, allowing the design parameters to be varied. Development of the circuit model is straightforward. Only one or two antenna elements from the array need to be simulated with a full-wave solver. Furthermore, the model is applicable for antenna arrays with different numbers of elements. The circuit model enables efficient iterative design and optimization of antenna arrays. Millimeter-wave SIW series-fed DRA array examples are used to validate the model. The simulation results using the proposed circuit model agree well with the full-wave solver and measurement results.
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