Overview

• A team from Peking University and City University of Hong Kong integrated 0.5–115 GHz operation into an 11 mm by 1.7 mm chip that consolidates bands typically handled by multiple radios.
• The design uses photonic‑electronic fusion, including a broadband electro‑optic modulator, photonic processing, and tunable lasers for wideband signal conversion and generation.
• Laboratory evaluations reported stable communication quality across the entire range, 6 GHz retuning in about 180 microseconds, and single‑channel throughput above 100 Gbps.
• The system features interference‑aware frequency navigation that can automatically hop to a clear channel, according to CityU professor Wang Cheng.
• The study is published in Nature, and the researchers aim to package the technology into plug‑and‑play modules no larger than a USB stick, though real‑world deployment work remains.