{"title":"Multi-Band Parity-Time-Symmetric Wireless Power Transfer Systems","authors":"Zhilu Ye, Minye Yang, Pai-Yen Chen","doi":"10.1109/WPTC51349.2021.9457925","DOIUrl":null,"url":null,"abstract":"In this paper, we propose and demonstrate the multi-band wireless power transfer (WPT) systems based on quantum-inspired symmetries. A non-Hermitian quantum system satisfying the parity-time $(PT)$-symmetry (space-time reflection symmetry) can have multiple real eigenfrequencies that depend on the coupling strength and non-Hermiticity index. By analogy, the PT-symmetric WPT system can provide multimodal or even wideband operations with high transmission efficiencies through adjustment of the effective quality-factor of resonantly coupled oscillators (analogous to non-Hermiticity) and their mutual inductive/capacitive coupling. We present here basic theory and experimental validations for achieving dual-band and (b) tri-band PT-symmetric WPT systems with engineerable operating frequencies.","PeriodicalId":130306,"journal":{"name":"2021 IEEE Wireless Power Transfer Conference (WPTC)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2021 IEEE Wireless Power Transfer Conference (WPTC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/WPTC51349.2021.9457925","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 4
Abstract
In this paper, we propose and demonstrate the multi-band wireless power transfer (WPT) systems based on quantum-inspired symmetries. A non-Hermitian quantum system satisfying the parity-time $(PT)$-symmetry (space-time reflection symmetry) can have multiple real eigenfrequencies that depend on the coupling strength and non-Hermiticity index. By analogy, the PT-symmetric WPT system can provide multimodal or even wideband operations with high transmission efficiencies through adjustment of the effective quality-factor of resonantly coupled oscillators (analogous to non-Hermiticity) and their mutual inductive/capacitive coupling. We present here basic theory and experimental validations for achieving dual-band and (b) tri-band PT-symmetric WPT systems with engineerable operating frequencies.