To get the best power transfer into an antenna, tuning is required. This process uses a load to match the transmission line to the antenna, which controls the standing wave ratio (SWR). [k3ng] built ...

The purpose of the project is to spoof a simple low frequency 125kHz RFID tag with the use of an Arduino and only a few components. A single Arduino pin provides the control once tag is assembled and ...

While you might think of radar pointing toward the skies, applications for radar have found their way underground as well. Ground-penetrating radar (GPR) is a tool that sends signals into the earth ...