Analysis of near field wireless power transfer using bow-tie defected ground structure

This paper describes the design of a couple of a bow-tie Defected Ground Structure (DGS) resonator with high efficiency and compact size for near field Wireless Power Transfer (WPT) system. The proposed WPT is experimentally measured. The resonant frequency is at 0.26GHz, with low insertion loss, |S
₂₁
| = -1.9dB and low return loss, |S
₁₁
| <; -17dB. The Measured result shows that the proposed WPT has a power efficiency of 65% at distance 10mm.