Abstract
A balise is a specialized device utilized for train communication and control. However, existing balises are composed of separate components, resulting in high production costs, low integration, and significant room for improvement in stability. We propose an integrated solution, to enhance the integration of balises, reducing the number of discrete components. Additionally, we propose a feedback-enabled energy extraction circuit with a limiter-based startup circuit, to enhance the stability of the balise system. The prototype was fabricated using 180 nm high voltage(HV) complementary metal oxide semiconductor(CMOS) technology. Once implemented in the balise, the number of discrete components in the system is reduced by 25%, and the system can start up within 20 ms and operate stably. The mean data rate (MDR) deviation of the balise is only 62 ppm, which is 69% lower than that specified in the test specification for the Eurobalise form–fit–function interface specification (FFFIS), and the maximum time interval error (MTIE) is less than 250 ns.
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