Circularly Symmetric Tightly Coupled Dipole Array for Rotationally Symmetric Radiation

The patent employs asymmetric dipole element designs where individual dipoles are positioned at non-uniform angular intervals around the circular array. This asymmetric arrangement of asymmetric elements creates the desired rotationally symmetric radiation pattern through constructive interference, resolving the contradiction between manufacturing simplicity and achieving precise radiation characteristics.

The patent utilizes parameter optimization by varying dipole lengths, spacing distances, and angular positions to achieve rotationally symmetric radiation properties. By carefully controlling these geometric parameters, the array achieves the desired radiation pattern using standard manufacturing techniques, bridging the gap between manufacturing ease and radiation precision.

The patent introduces a polarization synthesis network as an intermediary component between the tightly coupled dipole elements and the output. This network compensates for the non-orthogonal polarization effects by applying appropriate phase and amplitude adjustments, thereby maintaining polarization purity while preserving the wide bandwidth benefits of the tight coupling configuration.

The patent employs composite polarization structures where multiple dipole elements with different orientations are combined within each array element. By synthesizing the radiation from these composite structures through the polarization synthesis network, the system achieves both wide bandwidth operation and high polarization purity simultaneously.