The in‐phase reflection bandwidth theoretical limit of artificial magnetic conductors based on transmission line model

Abstract

ABSTRACTBased on the transmission line model, the in‐phase reflection (IPR) bandwidth theoretical limit using a function of permeability (μ) and thickness (h) of the substrate as well as center frequency of IPR (f) was expressed. An experimental design strategy was further derived from this function for creating novel artificial magnetic conductors (AMCs). To date, they have successfully designed, simulated, and experimentally verified this proposed strategy with various AMCs, where the bandwidth ratio to the theoretical limit can be achieved by as high as 98.5%. This newly proposed theoretical limit function was further evaluated in two‐ways, (1) our theoretical limit was compared with previously reported literature values, and (2) literature values were recalculated using our function. Herein, it was concluded that their IPR bandwidth theoretical limit function provided most restrictive and accurate value, and their AMC design strategy has showed evident advantages over literature. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2257–2261, 2016