Antennas are electronic devices used to transmit and receive radio signals. An antenna is an arrangement of aerial electrical conductors. This antennas covert radio frequency electrical current into electromagnetic waves. Antennas are can also be called as an arrangement of conductors generating a radiating the electromagnetic field in response to an applied alternating voltage and the associated alternating electric current.
Uses of Antenna
Antennas have a wide range of usage. Antennas act as a line of sight between the transmitting and reception aerial for directional services. Antennas are used in almost all electronic devices.
They can be located within the systems or outside the system. These antennas are used in systems such as radio and television broadcasting, radio communications, radar and space communications under water, through soil and rock certain frequencies of short distance.
Types of Antennas
There are many types of antennas available.
  • Omni Directional Antennas
  • Single Directional Antenna
  • Multi-directional antennas
  • Small Directional antennas,
  • Medium multi Directional antennas
  • large Multi-Directional antenna
This is the antennas depending on the frequencies of signals.
some of them are a long wave or low-frequency antennas short wave and high wave frequency antennas.