The conductors in that antenna were made from copper foil tape, a material that’s perfect for all sorts of specialized applications, like the slot antenna that he builds in the video below.

In response to these challenges, a South Korean startup named Copper Innovation Technologies (CIT) is making significant strides with its next-generation flexible copper-clad laminated film (FCCL).

Similarly, high-frequency waves struggle to propagate efficiently when encountering barriers, often resulting in signal loss. In response to these challenges, a South Korean startup named Copper ...