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How does a ferrite antenna work?
The ferrite rod antenna operates using the ferrite material to “concentrate” the magnetic component of the radio waves through the pick-up coil. The fact that this RF antenna uses the magnetic component of the radio signals in this way means that the antenna is directive.
Why ferrite core is used in a radio receiver?
In the coil, a low-loss, high-magnetic-permeability ferrite core is used that is stable against thermal fluctuation. The system can receive weak radio waves and can be used for several years without battery replacement because a small but high-performance ferrite core is used.
Which is the best ferrite for a mode inductor?
The exception is common mode inductors where the impedance of NiZn material is recommended from 70 MHz to several hundred GHz. The MnZn ferrite cores (Mix 31, 73, 75) have high permeabilities above 800 µ, have fairly low volume resistivity and moderate saturation flux density. They offer high ‘Q’ factors for the 1 KHz to 1 MHz frequency range.
What kind of inductors are used in an antenna?
Ferrite Core Antenna – These inductors are used in antenna applications with frequency ranges between of 100 kHz to 1 MHz and may incorporate a rod of ferrite, powdered iron, or non-magnetic phenolic material as the core. The coil of wire is wound around the rod used as the antenna.
What’s the name of the ferrite rod antenna?
Other names include loopstick antenna, ferrod, and ferrite-rod antenna. ” Ferroceptor ” is an older alternative name for a ferrite rod aerial, particularly used by Philips where the ferrite core would be called a ” Ferroxcube ” rod (a brand name acquired by Yageo from Philips in the year 2000).
What can ferrite cores be used for in electronics?
The ferrite cores used for signals have a range of applications from 1 kHz to many MHz, perhaps as much as 300 MHz, and have found their main application in electronics, such as in AM radios and RFID tags. Loopstick antenna from an AM radio having two windings, one for long wave and one for medium wave (AM broadcast) reception.