Effect of Curvature on Reflection Phase Characteristics of Electromagnetic Band-gap Structures

A method is proposed to evaluate the effect of curvature on the reflection phase characteristics of electromagnetic band-gap structures in this paper. By observing the changes of the corresponding frequency band of return loss of different length dipoles antennas versus in-phase reflection band- gap, the effect of curvature on the reflection phase is achieved. The simulation results show that the curved electromagnetic band-gap structures still exhibit better in-phase reflection characteristics, and the curvature makes the band-gap of reflection phase wider and the band-gap center frequency shift to the higher frequency.