High-order direct modulation terahertz communications with a wideband time-coding metachip modulator.

ABSTRACT: Terahertz communication technology based on on-off keying (OOK) direct modulation is vital for sixth-generation communication systems, especially in short-distance and high-rate applications. However, low-order OOK modulation often leads to suboptimal anti-interference capabilities and a heightened demodulation threshold. Here, we propose a high-order direct modulation terahertz communication framework using a wideband time-coding metachip modulator. The modulator leverages the electromagnetic resonance properties within the metaunit structure, with control enabled by gallium arsenide Schottky diodes. By manipulating the timing of voltage pulses applied to these diodes, the equivalent electromagnetic resonance distributions can be precisely regulated in the time domain. This enables indepe

SUBMITTER: Wang L 

PROVIDER: S-EPMC11801051 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature