Wearable antenna makes it through the wash

The antenna, developed over the past three years at the universities of Loughborough and Nottingham Trent, is claimed to be fully flexible, lightweight and water resistant. Immediate applications have been identified in the military and emergency services.

It is further claimed that the device could act as a viable alternative to monopole antennas, which Nottingham Trent’s Prof Tilak Dias said are bulky, heavy and prone to breaking.

Prof Dias, leader of the Advanced Textiles Research Group at Nottingham Trent, explained that modifications to embroidery machinery were essential in order to accommodate the conductive thread used to make the antenna and speed up the process for mass production.

The conductive thread is a polyamide yarn covered with a nano-coating of silver. Prof Dias explained that a key challenge was to minimise frictional drag that can cause the yarn to break at high speeds.

Prof Dias was reluctant to reveal finer details about modifications to the embroidery machinery but he did say that changes to different guides and tensioning devices within the machinery has resulted in a system that can be run at normal production speeds.