Wireless communications

Wireless communications

Cellular phones and pagers depend on printed and integrated circuits, advanced materials, and miniaturization techniques enhanced by chemistry.

AT&T Labs developed mobile car telephones in the 1940s, but they were unpopular due to a lack of communications channels.

The 1980s brought a big breakthrough when wireless communications were divided into a series of cells that automatically switched callers as they moved so that each cell could be reused.

One of the first cell phonesOne of the first cell phones

Cellular phones quickly became popular. Chemistry has also played a role in the development of rechargeable lithium-ion batteries in cellular phones.

Did you know?

Today, there are more than 4 billion mobile telephone users worldwide, which means that three quarterts of the globe's population makes calls through wireless devices on a daily basis.