An Introduction to Ferrite Rod Antenna

Ferrite rod antenna is a small magnetic loop antenna used in AM broadcast transistor radios for medium & long waveband reception and RFID applications. It is designed with a rod or bar made of ferrites and includes a coil wound around the ferrite rod with the help of a variable tuning capacitor in the radio circuitry. https://www.cosmoferrites.com/news-events/an-introduction-to-ferrite-rod-antenna