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COMP 101 - Wireless Networking Technologies Report

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University of Otago

   

Wireless networking (COMP 101)

   

Added on  2020-03-02

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COMP 101 - Wireless Networking Technologies Report, Antennas are essential tools when it comes to wireless communication. The communication systems need the means to convert electronic signals into the system to electromagnetic waves to be transmitted into free space. They are responsible for interconnecting the links involved between the free space and the transmitter and between the receivers and the free space for effective wireless communications. It is therefore not possible for successful wireless communication without thoroughly analyzing the existing antenna technologies before choosing the best as per the needs of the wireless system  in the making

COMP 101 - Wireless Networking Technologies Report

   

University of Otago

   

Wireless networking (COMP 101)

   Added on 2020-03-02

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1Running head: WIRELESS NETWORKING TECHNOLOGIESWireless networking and related technologies.
COMP 101 - Wireless Networking Technologies Report_1
2WIRELESS NETWORKING TECHNOLOGIESAbstractAntennas are essential tools when it comes to wireless communication. The communication systems need a means to convert electronic signals into the system to electromagnetic waves to be transmitted into free space. They are responsible for interconnecting the links involved between the free space and the transmitter and between the receivers and the free space for effective wireless communications. It is therefore not possible for successful wireless communication without thoroughly analyzing the existing antenna technologies before choosing the best as per the needs of the wireless system in the making. If the best antenna is selected regarding its operation, the wireless communication technologies expect a bigger success. The antennas are primarily categorized according to the technology they use and according to their application. The antennas in mobile industries may carry the future since most users in wireless communication technologies are opting mobile devices such as smartphones and they majorly depend on them.
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3WIRELESS NETWORKING TECHNOLOGIESTask 1Antenna technologies.Based on the direction they radiate the electromagnetic waves; we have two broad categories.Every antenna will fall in either of the two categories. i.Directional antennas: These are antennas that radiate or receive electromagnetic waves in a specified direction based pattern. They are used when the direction of the other positionis not arbitrary to maximize coupling to the electromagnetic field[ CITATION Joh61 \l 1033 ]. A good example is a Yagi-Uda antenna used as UHF and VHF frequencies.ii.Omnidirectional antennas: They receive or radiate electronic, magnetic waves from all directions or to all directions. Omnidirectional antennas are best efficient when the position of the other station is not known. A good example is a vehicle antenna.Based on the way they operate; we have the following major types:i.Aperture: They are constructed with a dipole fixed inside a three-dimensional guiding structure often larger than the wavelength of an aperture responsible for emitting the radio waves. Figure 1: basic horn (Pyramidal) antenna concept.
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4WIRELESS NETWORKING TECHNOLOGIESThey are mostly used at microwave frequencies and above. A good example is the horn antenna which consists of a flaring metal attached to a waveguide.ii.Monopole: They are similar to dipoles but with only one conductor. The one-rod conductor is fixed to ground or another artificial conductor. Then one side of the feedline of the receiver or the transmitter is connected to the conductor. A good example is a whipmajorly used in a vehicle on portable radios and mobile devices such as the walkie-talkie.Their construction is also significantly simple since they just need the metal conductor.
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