Flat-knitting integrates antenna directly into fabric production procedure, producing portable, highly directional reflectarray RF antennas

https://www.engineering.columbia.edu/taxonomy/term/98

"unlike traditional planar, they are small, light, flexible, less unwieldy, cheap...  unlike inkjet printed/ screen-print directly on textiles/ embroidery, conductive material is instead integrated into textile during its fabrication, overcoming delamination, slip, metallic region cracking, scalability issues... shapes divergent wavefront into a planar, increasing directionality... float-jacquard knitting (Fair Isle sweaters), metallic/ dielectric yarns...  2 devices: metalens/ vortex-beam generating... 1 square meter within 45 minutes"