Description

How it behaves

  • The magnetic field of an air coil antenna has an omnidirectional* radiation pattern due to the open magnetic path around the coil. *unless circumference is equal to the specified wavelength → bidirectional

What do Air Coil Antennas aim to solve

  • Wireless communication or power transfer
  • Reducing number of parts → no coilformer or magnetic core material

  • Open magnetic path through air
  • No bobbin or magnetic core material → Reduced number of parts
  • Low Q factor → Wide frequency bandwidth

  • Directionality → omnidirectional*

    *unless circumference is equal to the specified wavelength → bidirectional

Inductance 1µH - 2.5mH
Q Factor * 40-150
Frequency 100kHz - 13.5MHz

* Depends on working frequency range

  • Hearing aids
  • Railway signalling communication
  • Telecommunications
  • Direction finder receivers
  • Radio compass receivers
  • IoT devices

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