Negative Group Velocity Pulse Propagation Through a Left-Handed Transmission Line

TL;DR

This study demonstrates negative group velocity pulse propagation in a left-handed transmission line with COLS loading, showing superluminal effects and anomalous dispersion in the 5.6-6.1 GHz band.

Contribution

It introduces a novel microwave transmission line design with COLS that exhibits negative group velocity and anomalous dispersion in a specific frequency band.

Findings

Negative group velocity reached approximately -0.27c to -1.85c.

Stop band in transmission from 5.6 GHz to 6.1 GHz.

Pulse peak exited before the incident pulse entered the sample.

Abstract

In this paper, the microwave pulse propagation transferred through a left-handed transmission line using Complementary Omega-Like Structures (COLS) loaded was studied. There was a stop band in transmission from 5.6GHz to 6.1GHz, and the anomalous dispersion was causes in this band. Negative group velocity corresponds to the case in which the peak of the pulse exited before the peak of the incident pulse had entered the sample. The negative group velocity reached (-0.27c~-1.85c).