Microwave antenna

In today's world, Microwave antenna has become a topic of great importance and interest to a wide variety of people and sectors. From its origin to its influence on today's society, Microwave antenna continues to be a relevant topic that sparks debate and reflection. In this article, we will explore the different aspects of Microwave antenna, analyzing its implications and impact in various areas. From its historical origins to its current relevance, Microwave antenna has become a topic of interest that deserves to be studied and understood in order to better understand the world around us.
A typical larger microwave antenna designed for mid to long range
A parabolic satellite antenna for Erdfunkstelle Raisting, based in Raisting, Bavaria, Germany.
C band horn-reflector antennas on the roof of a telephone switching center in Seattle, Washington, part of the U.S. AT&T Long Lines microwave relay network.

A microwave antenna is a physical transmission device used to broadcast microwave transmissions between two or more locations.[1] In addition to broadcasting, antennas are also used in radar, radio astronomy and electronic warfare.

Microwave frequency bands

Radio bands where microwave antennas are commonly deployed in 2016 FCC[2]
C band 4 to 8 GHz 3.75 cm to 7.5 cm 4 GHz, 6 GHz
X band 8 to 12 GHz 25 mm to 37.5 mm 10 GHz, 11 GHz
Ku band 12 to 18 GHz 16.7 mm to 25 mm 12 GHz, 18 GHz
K band 18 to 26.5 GHz 11.3 mm to 16.7 mm 18 GHz
Ka band 26.5 to 40 GHz 5.0 mm to 11.3 mm 23 GHz, 31 GHz
Q band 33 to 50 GHz 6.0 mm to 9.0 mm 38 GHz
W band 75 to 110 GHz 2.7 mm to 4.0 mm 70 GHz, 80 GHz, 90 GHz

Uses

See also: Microwave transmission

Antenna types

Reflector antennas

A parabolic antenna is an antenna that uses a parabolic reflector, a curved surface with the cross-sectional shape of a parabola, to direct the radio waves. These devices range anywhere from 6" to more than 12' diameter depending on application and use.

Horn antennas

A horn antenna or microwave horn is an antenna that consists of a flaring metal waveguide shaped like a horn to direct radio waves in a beam. Horns are widely used as antennas at UHF and microwave frequencies, above 300 MHz.[3]

Lens antennas

A lens antenna uses a lens to direct or collect microwave radiation.

Array antennas

An array antenna is a high gain antenna consisting of an array of smaller antenna elements.

Leaky wave antenna

A leaky wave antenna uses a leaking transmission line to obtain radiation.

Spiral antenna

A spiral antenna, configured in the shape of a spiral, serves as a radio frequency antenna. It can function independently or as a feeder for satellite communication reflector antennas. It ensures excellent impedance matching and radiation pattern performance across the entire operating frequency band.


References

  1. ^ Balanis, Constantine. Antenna theory; analysis and design (3rd ed.).
  2. ^ "Point-to-Point Microwave". 22 February 2016.
  3. ^ Bevilaqua, Peter (2009). "Horn antenna - Intro". Antenna-theory.com website. Retrieved 2010-11-11.
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