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Home Knowledge Base

Basic of Microwave Horn Antenna : Working

Nikita Bisen by Nikita Bisen
September 13, 2022
in Knowledge Base
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  • It is a type of antenna which is constructed when the end of the antenna is flared out or tapered in the shape of a horn. This antenna operates in microwave frequency.
  • The horn antenna operates in ultra-high and super-high frequencies ranging between 300 MHz to 30 GHz.

Working of Horn Antenna

  • The energy of the beam when slowly convert into radiation, then it reduced the losses and the focusing of the beam improves.
  • A Horn antenna may be considered as a flared-out waveguide, by which the directivity is improved and the diffraction is reduced.
  • The below image shows the model of a horn antenna.
Working of Horn Antenna

Types of Horn Antenna

There are 4 types of horn antenna i.e., and in sectoral horn there are 2 types of horn is mentioned in below.

  • 1. Pyramidal horn
  • 2. Sectoral horn
  • I. E-plane
  • II. H-plane
  • 3. Conical horn
  • 4. Exponential horn
Types of Horn Antenna

Advantages of Horn Antenna

  • It offers easy construction as can be easily configured with a waveguide.
  • The absence of a resonance element in the structure allows it to operate over a wide bandwidth.
  • The horn antenna provides good impedance matching.
  • It is highly directional thereby providing higher directivity.
  • The antenna offers fewer reflections.

Disadvantages of Horn Antenna

  • The directivity of the antenna is dependent on the flare angle.
  • The dimensions of the flare must be sufficiently large and this sometimes makes the antenna bulky.

Applications of Horn Antenna

  • Used for astronomical studies
  • Used in microwave applications
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Nikita Bisen

Nikita Bisen

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