KGEA-AFULR Ultra Long Range Flexible LF Antenna for Keyless Entry System (0.100mH)

Freq. (kHz)L (µH)Length (mm)Width (mm)Height (mm)SRF (MHz) MinQ MinCres (nF)
Showing 1 - 1 of 1 item

Ultra Long Range Flexible LF Antenna for Keyless Entry System.


Ultra-long-range antenna specially designed for CAR2CAR (Platooning) communication in the range of 100kHz. 

Most of the vehicles currently manufactured in the world with a KES (keyless entry system) use a number of short antennas. Depending on the quality of the vehicle and the system they use 3, 4, 5 antennas (in the door handles, interior antenna, in the trunk handle…) The long-range flexible antenna has been designed in order to use only one antenna (until 500mm) and to reduce the number of antennas by car to just one with equal or better performance reading distance and H-feld around the whole vehicle .


Technical and economic advantages

  • Longer antenna (until 500mm).
  • Completely flexible antenna.
  • Deformation in the middle of the antenna.
  • Higher impact absorption and mechanical reduction preventive.
  • IP protection 67.
  • High stability in temperature (-40ºC up to +85ºC).
  • Resonant frequency adjusting below +/- 2kHz.
  • Custom L-C value (F-Res: KGEA-AF) under demand or only L (KGEA-AFC)
  • Wiring and connectors is reduced by 1/3, ¼ or 1/5 respectively.
  • OEM assembly time is reduced by 1/3, ¼ or 1/5 respectively.
  • Total energy consumption and battery current leaking, a very important parameter especially in electric vehicles is reduced proportionally.
  • A longer antenna need lower currents to generate equal or more intense magnetic fields thus reducing the again the energy needed and the cross-section of the wire to the antennas


L (mH)Cres (nF)Q MinIH-fieldSensitivity@125khzFreq. (kHz)Length (mm)Height (mm)Width (mm)
KGEA-AFULR-B-0100J 0.100 - >150 2APP 123 dBuV/m@2App@3meter 722mVpp/App/m 125 500 32 26

The specifcation chart is a reference guide for the most common required values at working frequencies of 125 kHz, 20 kHz and 134.2 kHz. Any other inductance value at LF or tighter tolerances can be provided. Please contact our sales department for any inquiry .


KGEA AFULR dimensions


KGEA AFULR nomenclature


H-Field Magnetic Strength KGEA-AFULR series



Measuring conditions example