Sensors and Sensor Networks Mix Old and New Technologies

This month’s Technology Report is primarily an introduction to the article that follows on p. 32, which provides descriptions of a wide range of sen-sors that use microwave technology. These sensors—along with more conventional electrical, mechanical, thermal and environmental sensors—are receiving much atten-tion as elements in a wireless sensor network. Transmission technologies such as ZigBee, IEEE 802.15, ultra wideband (UWB) and others are driving a new fam-ily of wireless applications.