Figure 2
Transmission characteristics of the transmission under different bias voltages.
(a) Schematic of the CRLH TL unit. See more details in Methods and Supplementary Text. (b) The theoretical dispersion curves derived by ABCD matrix method and experimental dispersion curves of the balanced CRLH TL, the inset is the zoom-in of curves inside the green ellipse. fZ is the experimental (near) zero-index frequency 852 MHz. (c) The theoretical and experimental phase velocities obtained from Fig. 2b. (d) |S21| of the CRLH TL under 16 V (red solid lines) and under 0 V (blue dotted line). fL, fR are frequencies 690 MHz and 990 MHz specifically. The former is frequency set in left-handed passband while the latter is set in right-handed passband. Green dotted line indicates the zero-index frequency.
