UHF HELICAL ANTENNA
Antennas Glossary
Antennas — UHF Helical Antenna
Information on UHF Helical Antenna
A UHF helical antenna is constructed using a helix
of wire that is fed at one end and unconnected
at the other.
The UHF helical antenna is one
of the simplest to construct since the dimensions are not
critical. Generally, the UHF helical antenna consists of a
helix of thick wire or rod, connected to the inner
conductor of a coaxial line, and a ground-plane screen connected
to the braid.
The bandwidth of an antenna may be increased
by increasing its thickness or surface area. The same result
may be obtained by making a UHF helical antenna.
When the helix circumference is smaller than a wavelength, the
radiation pattern is similar to a dipole. When the circumference
of the UHF helical antenna is increased to above
one wavelength, the axial mode of radiation is increased.
Other topics in our resources on Antennas related to UHF Helical Antenna include:
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