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Dipole Antennas in Wireless Communication


Dipole Antennas in Wireless Communication

Dipole antennas are one of the most fundamental antenna types. They are widely used due to their simplicity and efficient radiation.

Basic Structure

A dipole antenna consists of two conductive arms fed at the center.

Resonant Length

The approximate length of a half-wave dipole is:

L = λ / 2

Where λ is the wavelength.

Example

For 5.8 GHz:

λ = c / f

λ ≈ 51.7 mm

Dipole length ≈ 25.8 mm

Advantages

  • Simple structure
  • Good radiation efficiency
  • Easy to fabricate

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