Planar array approach as alternative method to characterize radiation pattern of 2 × 2 spiral resonator (SR) structure

This paper presents the planar array approach as an alternative method to characterize radiation pattern of spiral resonator (SR) structure. The method involves the development of linear array approach of SR structure with a single patch discussed herein. The planar array is constructed of 2 × 2 SR structure in which each single patch of SR structure is assumed as a similar non-isotropic point source. To verify the proposed planar array approach, the 2 × 2 SR structure implemented as an antenna radiator is characterized using 3D simulation software and experimentally measured to obtain its radiation pattern. The maximum electric field intensities of radiation pattern at the boresight direction obtained from the proposed approach, simulation, and measurement are 24.54 V/m, 24.56V/m, and 24.49 V/m, respectively. It shows that the electric field intensities at the boresight direction have good agreement each other.