Printed frequency selective surfaces on textiles

Abstract

A novel technique for inkjet printing frequency selective surfaces (FSSs) on textiles is introduced. The challenge of printing an inkjet layer of 3 µm thickness on polyester cotton with a surface roughness of the order of 150 µm is achieved with a screen-printed interface layer. The conducting inkjet layer is then printed directly on top of the interface layer. A screen mask was used so that the interface layer was only printed directly below the conducting ink. A square FSS structure has been fabricated and the measured shielding has been compared to simulations.

A WiFi tracking device printed directly on textile for wearable electronics applications

“…onto textile [19][20][21] • knitting, weaving or embroidering fully conductive threads or conductive coatings into the fabric [22][23][24][25] • conductive printing on textiles [1][2][3][4][5][6][7][8][9][10][11][12][13][26][27][28][29][30][31][32][33][34][35][36][37] All three categories are perfectly viable production methods and have their uses, advantages and shortcomings. However, only conductive printing on textile can potentially acquire efficient, fast and reliable mass production traits inherent to the electronic industry.…”

“…The interface layer method, initially proposed by researchers at the University of Southampton [1][2][3][4][5][6][7][8][9][10][11][12][13], can be used with a variety of textiles such as polyester/cotton. Such fabric is cheap and easy to acquire, making this method very accessible and promising for wearable electronics.…”

“…Such fabric is cheap and easy to acquire, making this method very accessible and promising for wearable electronics. Up until now the conductive printing via interface layer method was limited to simple structures such as lines, patches, electrodes, and simple antennas [1][2][3][4][5][6][7][8][9][10][11][12][13]. No complete circuit design involving an integration of electronic components on textile has been demonstrated in this medium before.…”

“…Furthermore, the primary ingredient in interface layer method is the interface layer ink. Current ink Fabink UV IF-4 which is used in every interface layer method research paper [1][2][3][4][5][6][7][8][9][10][11][12][13] is much more expensive than regular dielectric inks. The high cost of the current interface layer ink is prohibitive, and research attempts should be made to optimize a regular dielectric ink to function with textiles.…”

Study of the Unit Structure in Frequency Selective Fabric Fabricated by U-Shaped Velvet

“…The metal aperture-type FSSs transmit the electromagnetic wave around the resonance frequency [1]. In recent years, the FSSs have been investigated by many researchers about the structure of single-layer [2,3], multi-layer [4][5][6][7]or 3D [8][9][10] metal unit. Changing the design of electromagnetic materials, unit size, arrangement and other parameters, metal FSSs can obtain the specific resonance frequency, such as broadband, multi frequency, better angle stability, miniaturization or other characteristics.…”