Low Frequency (LF) Antenna

The function of the smart key is the addition of LF(Low frequency) communication technology to the remote key function. LF communication is a technology that identifies the location of a smart key held by a driver using an antenna installed on the vehicle. Through this, the smart key holder unlocks the lock by pressing the door button at the front of the car, and can start the engine by pressing it.
LF communication technology accurately determines the location of the smart key, estimates the location of the holder, and operates the function, so accurate recognition distance is very important.
To meet these requirements, Samwha Electronics' ferrite materials are designed with extremely stable properties no matter what the temperature change, from polar and tropical regions. SM-23T which has the permeability of 2300 is widely used for this LF antenna application, and in case that higher permeability is required, SM-43T shows best performance as well.

Ferrite Core

Low Frequency (LF) Antenna

Temperature Stability Materials

Products List for Low Frequency Antenna