Magnetic induction underpins many technologies in everyday life. A changing magnetic flux through a wire loop induces an electromotive force (emf) and, if the circuit is closed, a current. Faraday’s ...

There’s a joke in the world of radio that all you need for a HF antenna is a piece of wet string, but the truth is that rudimentary antennas rarely perform well. Random pieces of wire may pull in some ...

The magnetic loop antenna is a familiar sight in radio amateur circles as a means to pack a high performance HF antenna into a small space. It takes the form of a large single-turn coil made into a ...