We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Digital non-Foster-inspired electronics for broadband impedance matching.
- Authors
Yang, Xin; Zhang, Zhihe; Xu, Mengwei; Li, Shuxun; Zhang, Yuanhong; Zhu, Xue-Feng; Ouyang, Xiaoping; Alù, Andrea
- Abstract
Narrow bandwidths are a general bottleneck for applications relying on passive, linear, subwavelength resonators. In the past decades, several efforts have been devoted to overcoming this challenge, broadening the bandwidth of small resonators by the means of analog non-Foster matching networks for radiators, antennas and metamaterials. However, most non-Foster approaches present challenges in terms of tunability, stability and power limitations. Here, by tuning a subwavelength acoustic transducer with digital non-Foster-inspired electronics, we demonstrate five-fold bandwidth enhancement compared to conventional analog non-Foster matching. Long-distance transmission over airborne acoustic channels, with approximately three orders of magnitude increase in power level, validates the performance of the proposed approach. We also demonstrate convenient reconfigurability of our non-Foster-inspired electronics. This implementation provides a viable solution to enhance the bandwidth of sub-wavelength resonance-based systems, extendable to the electromagnetic domain, and enables the practical implementation of airborne and underwater acoustic radiators. Resonance-based systems such as electroacoustic transducers are often limited by narrow bandwidth. Here, authors report a digital non-Foster inspired circuit demonstrating significant bandwidth and power level enhancement with greater reconfigurability than conventional analog non-Foster approaches.
- Subjects
DIGITAL electronics; IMPEDANCE matching; ELECTROACOUSTIC transducers; ACOUSTIC radiators; ACOUSTIC transducers; ANALOG circuits; TRANSDUCERS; TRANSMISSION of sound; BIOLOGICALLY inspired computing
- Publication
Nature Communications, 2024, Vol 15, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-024-48861-6