Specially Designed Metamaterial Split Ring Resonator for High Resolution Imaging at Microwave Frequencies

Abstract

A promising novel topology specially designed with the aim to reduce the effective size of the Split Ring Resonator (SRR) for sensitive and high resolution imaging applications is proposed. This is achieved by modifying the conventional SRR by slightly raising the split region of the outer ring structure perpendicular to the plane of SRR. The proposed design topology is such that the localized field at the projected portion of the structure is isolated from the remaining portion of the SRR. After identifying the needed projection height of the split region of this specially designed scanning probe, objects with dimensions very much less than operating wavelength is scanned and identified, which will not be possible by using a normal SRR. The experimental results are verified using high frequency stimulation software to authenticate the results of this newly designed sensor which may find applications in enhancing the sensitiveness of all types of SRR based sensors.