Comparative analysis of dual-band array radiator interactions in rectangular and triangular grids

Dual-band radiator interactions in rectangular and triangular grids are analyzed. The frequency ratio between the individual sub-bands of operation is 1.86:1. Performance comparison is essentially based on the coupling between adjacent elements and detuning levels of the radiators in array configuration. Results provide essential insights to understand the radiator´s coupling behaviour, especially when the bands of operation are separated by a substantial frequency gap. The analysis is also important for providing wide scan performance at both bands of operation, as there is a direct correlation between the coupling and the scan behaviour of the array.