Equivalent Circuit Analysis of Transmission Line with F-SIR Type Open-Stub Resonator for Negative Group Delay and Slope Characteristics

摘要

Negative group delay is one of the anomalous characteristics of the metamaterial, and can be used to compensate the group delay of systems and is applicable to signal processing devices. In this paper, to achieve negative group delay with not only wide-band characteristics but also low-insertion loss, we newly proposed the transmission line with a folded-stepped impedance resonator (F-SIR) type open-stub resonator for negative group delay and slope characteristics. The concept of the proposed TL is based on the anti-resonance due to F-SIR open-stub resonator. The negative group delay and slope characteristics are achieved around anti-resonance. The insertion loss is dramatically improved compared with our previous results, which is constructed by gap and F-SIR structure. This study is a successful report that the validity of the proposed F-SIR TL structure is demonstrated.