In this article the admin will discuss about the device as a transmitter and receiver of electronic waves which is nothing but an antenna. The antenna here is the antenna used for computer networks.

The function of the antenna itself is to convert an electrical signal into an electromagnetic signal, then radiate it (the release of electromagnetic energy into the air / free space) and vice versa.

Antennas can be classified into two types, namely omnidirectional and directional. What are omnidirectional and directional antennas? The following explanation or understanding of omnidirectional and directional antennas antennas:

  • Omni Directional Antennas: are antennas as transmitters that have polarization or emission direction in all directions or you could say 360 degrees.
  • Directional Antenna: is a directional antenna that can be as a transmitter or as a receiver with polarization in a particular direction or one direction only.

The examples of antennas include omni directional and directional with various characteristics that have their respective functions according to the needs of its users. Here are some types or types of computer network antennas and their characteristics or functions.

Types of Wireless Network Antennas

  • Omni antenna
omni antenna

Omni antenna is more widely used as ap mode because of its wide range, has a gain of 3-13 dBi. This antenna is the antenna most often used as a hotspot or RT RW Net that has a frequency of 2.4 and 5.8 Ghz. The following characteristics of the omni antenna:

  1. This antenna is shaped like a stick
  2. Polarization or beam direction in all directions or 360 degrees
  3. Wide area coverage but short range
  4. Includes PTMP or Point To Multi Point network types
  • Sectoral Antennas
sectoral antenna

The sectoral antenna is almost similar to the omni antenna, the most striking difference being the direction of the beam, the omni antenna can be up to 360 degrees while the antenna can only reach half that is 180 degrees. The sectoral antenna has a gain between 10-19 dBi, and the following characteristics:

  1. Shaped like a tube
  2. Polarization in a certain direction that is 45-180 degrees
  3. Includes both PTP and PTMP network types
  • Grid Antenna
Grid Antenna

This antenna is widely used as a remote client that uses PTP or Point to Point topology where the transmitter and receiver both use a grid antenna. The frequency of the grid antenna is 2.4 Ghz and also 5.8 Ghz, which has a gain of up to 27 dBi. The components consist of reflexors, poles, and jumpers. following antenna grid characteristics:

  1. This antenna is shaped like a net
  2. Polarization in a particular direction or one direction
  3. Usually there are pairs of the same antenna, one as a transmitter and one as a receiver
  4. Includes PTP or Point To Point network types
  • Yagi Antenna
Yagi Antenna

The yagi antenna consists of driven (supply point of the cable), reflector (reflector), and director (directors), has a gain of up to 16 dBi. Yagi antennas are more suitable as a client mode directed to transmitters such as omni, sectoral, etc. This antenna also has a frequency of 2.4 and 5.8 Ghz, with the following characteristics:

  1. This antenna is shaped like a fish bone
  2. Polarization in a particular direction or one direction
  3. Includes PTP network type
  • Parabolic Antenna (Solid Disc)
parabolic Antenna

This antenna is almost the same as a grid antenna it’s just that the range is more focused. 18-28 dBi. Of course in urusun distance the range of this antenna is superior to the grid antenna. This antenna is usually applied for long distance point to point network types.

  • Pan Bolic Antenna
Bolik Pan Antenna

The bolik pan antenna is shaped like a frying pan, just made from a frying pan: V (joking bro, so that it’s not groggy). This antenna is almost the same as parabolic, the only difference being the parabolic-disc reflector that uses a frying pan.

Bolik skillet antenna is used to strengthen the wifi usb range which is not strong enough to capture the signal, the range is not so far only hundreds of meters.

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