The Upper Bound of Stacked Patch Antennas with Various Dielectric Laminate Combinations

A novel technique to calculate the maximum achievable bandwidth with given dielectric combination is presented in this paper. An equivalent circuit model of the stacked patch is used to study the upper bound of a stacked patch antenna's bandwidth with varied dielectric laminate combinations. The values of the lumped elements in the circuit model are extracted theoretically and used to demonstrate the maximum achievable bandwidth of a stacked patch with a given dielectric stack-up. The developed model using theoretical calculations is verified by comparing the results from EM simulations, and the performance of the tool is evaluated with various use cases. This model helps to predict the performance of the antenna before the design phase thus serving as powerful tool for antenna designers by predicting the performance before designing the antenna.