What is a hellic antenna?
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Helical antenna is a compact spiral antenna used primarily for mobile high -frequency communication as an alternative to longer types of antennas. Helical antennas consist of air conductors, which are evenly wound around the support elements. The compact nature of their design means that the standard lengths of the antenna can be significantly reduced for use on portable communication equipment. The ground plane of the spiral antenna is usually formed by an integral reflective element or an item on which the antenna is mounted, such as the automotive body. Spiral antennas can be applied either in conventional configurations of axial radiation, axial radiation. This means that the coil or helix consists of a series of evenly distributed parallel corners. In this way, the antenna design creates a final result that has the same length of the conductor in a much shortence than the extended conductor. The supports used can have different cross -sections and made of any insulating material. The most common support is the tubeA and made of flexible material such as glass fiber.
Helical antennas are generally presented in two basic configurations. The first is Broadside Configuration, which emits its signal at 90 degrees to the antenna axis. These are the more common of two types of Helical antennas and are popular alternatives to standard lengths of whip -style antennas. Broadside editor antennas are commonly used on radio vehicles, civic belts (CB) and hand -held two -way radios. They are also widely used as standard FM motor vehicles.
The second configuration of the Helical antenna is the type of axial or end fire. In the Broadside antennas, the coil diameter is much smaller than the determined frequency wavelength. In end-fikonfiguration RE, the Helix diameter is on or above the intended wavelength. This type of antenna consists of a single controlled conductor usually curved UVNIts protective tube. The parabolic reflector is often included in the antenna to increase its directional sensitivity.
This type of air content has a reliable circular polarization and is generally classified as a waveguide. This means that the antenna can be rotated to polarize radiation in a more focused way. This also applies to the reception antenna that can be rotated to improve income. End designs of the end fire antenna are well suited to applications such as monitoring animals equipped with radio collars. This type of antenna is often used in space communication.