Table 2 Structural Parameters of the CRLH-TL Antenna.

From: Bandwidth and gain enhancement of composite right left handed metamaterial transmission line planar antenna employing a non foster impedance matching circuit board

Number of spiral slot turns 3
Width of spiral slots 0.75 mm
Gap between spiral slots 0.75 mm
Gap between the unit-cells 2.25 mm
Number of inductive spiral turns 3
Width of inductive spiral 0.75 mm
Gap between the inductive spirals 0.75 mm
Radius of the via-hole 0.4 mm
Number of unit-cells 6
Unit-cell dimensions 7 × 16 × 0.8 mm3 (0.032 \({\uplambda }_{0}\times \) 0.074 \({\uplambda }_{0}\times \) 0.003 \({\uplambda }_{0})\)
Antenna dimensions 56 × 20 × 0.8 mm3 (0.261 \({\uplambda }_{0}\times \) 0.093 \({\uplambda }_{0}\times \) 0.003 \({\uplambda }_{0})\)
Ground-plane dimensions 56 × 20 × 0.035 mm3
Dimensions of feedline 13 × 2.3 mm2
Dimensions of NF-IMC board 16 × 9.5 mm2