Time-Switched Matching Network for Transmitting Antenna Systems
Luca Stefanini, Davide Ramaccia, Andrea Alù, Alessandro Toscano, Filiberto Bilotti · 2025
Antenna matching is a critical aspect of antenna design and operation. It involves ensuring that an antenna's impedance is optimally matched to the feeding transmission line it is connected to at the operative frequency of the transmitter. Traditional matching networks, constrained by the Bode-Fano limit, struggle to provide adequate bandwidth and performance across multiple frequencies. In this contribution, we propose a matching network based on the time-switched meta materials, a class of media whose properties changes abruptly in time. We investigate the possibility to perform a frequency conversion, instead a impedance conversion, in order to align the spectral content of the signal to the natural matching band of the antenna. Full-wave simulations demonstrate the system's ability to match signals across different frequencies without distorting the antenna's radiation pattern. This approach represents a potential alternative to traditional schemes that can be further exploited for applications to next-generation communication, Radar and sensing systems.