CCFL-LCD Backlighting as a Broadband Plasma Antenna: Quantifying SCC Thresholds and RF Absorption through the Hala Protocol

This technical note characterizes the parasitic antenna properties and nonlinear signal dynamics of Cold Cathode Fluorescent Lamp (CCFL) arrays in legacy Liquid Crystal Displays (LCD). Leveraging the inherent plasma physics of the backlighting architecture, we propose the Hala Protocol: a struc- tured Design of Experiment (DoE) that utilizes 12 discrete ionization levels to modulate the effective electromagnetic aperture of the tubes. Experimental results demonstrate that these arrays function as reconfigurable plasma antennas capable of broadband signal reception. We identify a nonlinear phase transition, defined as Successive Controlled Collapse (SCC), wherein stochastic atmospheric noise is suppressed by stabilized internal standing waves upon reaching a critical ionization threshold. Spatial analysis of the display’s noise panels validates a transition from a receptive dielectric state to a conductive resonant shield as current increases, revealing latent electromagnetic signatures of the local environment. This study provides a framework for repurposing obsolete display hardware for atmospheric RF sensing and multi-phase gaseous-liquid circuit stabilization.