Beamforming a circular-polarized radiation pattern on volumetric random arrays with deliberately aligned array antennas

Abstract

This letter proposes a circularly polarized beamforming technique on volumetric random arrays with each antenna aligned deliberately. This technique seeks to advance the capabilities of spatially distributed antenna systems on mobile platforms. Sixteen microstrip patch antennas grouped as the tested array are adopted to investigate the fidelity of the developed beamforming technique. Each array element is distributed randomly and rotated freely to emulate the real mobile environment. Detailed and systematic beamforming procedures are provided and illustrated. Measured radiation patterns of the volumetric random array are compared to the simulated ones to benchmark their performance.

Developing Three-Dimensional Beamshaping Techniques on Volumetric Random Arrays to Suppress Array Sidelobes

“…The progressive length delay from the array scan is calculated by dot product the P and S . In this way, the distance phases [3] of each array element are derived thereafter with the known free-space wavelength. Due to the antenna couplings, an extra phase optimization step potentially increases the phase accuracy.…”

“…Figure 1 gives an imaginary picture of a wireless phased array beamforming system implemented by drones. To realize this wireless array system, the practical challenges associated with wireless synchronization [1] [2], localization, and coordination of dynamic beamforming and beamshaping methodologies [3] [4] [5] must be overcome.…”