layer, may ensure that the signals do not enter the body of the clothing wearer nor radiate in space, but that the signals are rather designed to propagate along the comb shaped metamaterial textile with little to no signal loss. 

[0083] According to some embodiments, a minimum number of teeth to enable propagation of radio-surface plasmons along the comb shaped metamaterial textile may be two, i.e., at least two teeth or two units are required in order to provide sufficient wireless transmission, while a maximum number of teeth to enable propagation of radio-surface plasmons along the comb shaped metamaterial may be limited by the total length and conductivity of the metamaterial textile, which may be approximately 100 teeth or units. 

[0084] Reference is now made to FIG. 1C, which is a schematic illustration of simulation of the electric field distribution |Ez| emitted by a dipole above a metamaterial textile (top figure), unpatterned conductive textile (middle figure), and nonconductive textile (bottom figure), the textile is placed on the body modeled by air-tissue half-space, according to embodiments of the present disclosure. Numerical simulations demonstrate the ability of the metamaterial textile to confine electromagnetic radiation from a dipole transmitter at short-range communication frequencies (2.4— 2.5 GHz industrial, scientific, and medical (ISM) band, including Bluetooth and Wi-Fi protocols). FIG. 1C illustrates that placement of a transmitter 5 mm above the structure excites surface plasmons that propagate to the receiver with high efficiency and minimal radiation into the surrounding space. [0085] Reference is now made to FIG. 1D, which is a schematic illustration of normali zed field distribution on the ’yz’plane and field profile along the dashed line, according to embodiments of the present disclosure. The ’back’denotes the back side of the wearer of the metamaterial textile, while ’front’ denotes the front side of the wearer of the metamaterial textile. It is clear that the field distribution and signal strength is much higher as closer the signal is to the metamaterial textile, located at the front side of the wearer. 

[0086] These surface modes are absent in conductive textiles that are not structured, in which case transmission occurs in the radiative mode with about four orders-of-magnitude lower efficiency. The textiles may be folded with minimal radiative losses and reflection (<5\% for U-turn with l.25-mm radius-of-curvature) . 

[0087] Reference is now made to FIG. 1E, which is a schematic illustration of a dispersion curve of the metamaterial structure, according to embodiments of the present disclosure. The shaded gray area shows the 2.4—2.5 GHz ISM band. 

