Smart homes of the future will automatically adapt to their surroundings using an array of sensors to record everything from the building’s temperature and humidity to the light level and air quality.

Using a home's electrical wiring as a giant copper antenna allows for wireless sensors that can communicate over a whole house and run for decades on a single watch battery. The device could be used ...

A so-called random wire antenna is an end fed antenna. As typically installed, it is a compromise antenna but great for portable use because it is easy to pack and easy to install. One end goes ...