Abstract
The defected ground structure (DGS) technique enables miniaturization of the resonator which leads to the development of the compact near-field wireless power transfer (WPT) systems. In general, numerous challenges are inherent in the design of the DGS-based WPT systems and, hence, appropriate trade-offs for achieving optimal performance are required. Furthermore, the design advancements have led to the development of the DGS-based multi-band WPT systems to fulfill the needs of simultaneous data and power transfer. The innovations in the DGS-based WPT systems have also resulted in the definition of more commonly used figures-of-merit for the benchmarking of various performance metrics. The literature is replete with the design schemes to address one or more associated design challenges and successful WPT system realizations with enhanced performance. With this in mind, this paper touches upon the DGS-based WPTs developments and presents a concise report on the current state-of-the-art and future directions.
Highlights
Nowadays replacing wires by applying wireless power transfer (WPT) systems has become very attractive since the latter enables the charging of multiple electronic devices simultaneously [1] and powering the sensors with very low power consumption [2], [3]
The EM simulations of two coupled resonators defines the WPT system results in |S|-parameters depicted in Figures 9a and 9b. It can be deduced from these plots that there are two distinct resonant frequencies and they can be considered as the operating frequencies of the WPT system. These results clearly show that the defected ground structure (DGS)-based resonators are useful in realizing WPT systems
The operating distance and power transfer efficiency in such systems can be accomplished by high Q resonators, but none of the realized WPT systems reported so far achieved more than 85% efficiency [49], [73]
Summary
Nowadays replacing wires by applying wireless power transfer (WPT) systems has become very attractive since the latter enables the charging of multiple electronic devices simultaneously [1] and powering the sensors with very low power consumption [2], [3]. Transmission of electrical power through free space using radio waves, i.e., essentially entails the transmission of electrical energy without employing any physical link. The concept of WPT can be traced back to 1888 when Heinrich Hertz demonstrated, for the first time, wireless transmission of power [4], [5]. It is imperative to mention that the modern world considers Nikola Tesla as the father of WPT as he was the first to experiment and document his work on WPT way back in 1899 [6]–[8].
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
