Digital High Gain Aerials
From a technology perspective, a high gain aerial should have 18 or more elements. However, the area of an element count has always generated controversy, owing to different interpretations by different manufacturers.
Understanding the Concept of Element Count
In the past, each director was counted as an individual element, with each dipole considered so too. The whole reflector also counted as a single element. However, this definition has changed over time due to the ambition among manufacturers to advance the sales of their antennas. Currently, most manufacturers count each single unit of the reflector as an element on its own.
Apart from the number of elements, the length of an antenna also determines its gain. Longer aerials have higher gain compared to short aerials. However, from an engineering perspective, a high gain antenna is the type of antenna with a targeted, narrow radioactive beam width. The significance of the narrow beam is that it enhances precision targeting of the radio signals to enhance transmission.
Gain refers to the extent of coverage of an antenna measured in decibels. For antennas to have a high gain, they need to be physically large.
Factors That Affect the Gain of Digital High Gain Antennas
- Number of elements and the principal of tuning applied to these elements
How Does A Digital High Gain Aerial Antenna Work?
High gain antennas allow most power transmitted to go in the direction of the receiver. This allowance translates into a high level of strength at the receiving end. During receiving, high gain antennas also capture more of the transmitted signal, increasing its strength.
Because of the principal of directivity, these antennas receive and send fewer signals when working from directions away from the primary transmission beam. Manufacturers use this understanding to reduce interference.
Types of Digital High Gain Antennas
- Helical Antennae
- Parabolic antennae
- Yagi antennae
- Horn Antennae
Areas of Application of Digital High Gain Antennas
- In deep space probes because of their ability to transmit and receive signals wide with little interference.
- In radar systems to support satellite communication programs
- Wi-Fi systems use digital high gain antennae to improve the quality of transmission of wireless signals.
- Signal amplification and regulation of interference in deep-sea missions by the military and researchers.
The most efficient antennae systems can reduce electronic interference by the forces of nature and transmit clear signals. By definition, big aerials have higher levels of efficiency than relatively small counterparts do.